Roofing in Walnut Creek, CA: Done Once. Done Right.

We repair, replace, and install roofs for Walnut Creek homeowners with in-house crews working under CSLB License #1031864. Cobex Construction Group is family owned and operated, BBB accredited since 2017, and focused entirely on exterior services, so roofing is not a sideline here.
FREE QUOTE Form
30+ yrs
Of Combined Experience
5,000+
Satisfied Customers
1,000+
5 Star Reviews
If you’re looking at a ceiling stain, a roof past its useful life, or three bids from different companies that don’t match each other, the first step costs nothing. We offer free estimates in writing, and your Walnut Creek roof inspection carries no obligation. It’s a quick conversation, not an application. Local experience matters, because long dry summers and concentrated winter rain shape which roofing materials actually hold up here.

See our roofing services or contact us at 916-745-6699 to schedule your free inspection.
FAMILY

Cobex Construction Group is a family-owned business committed to treating you like family. Our concierge service ensures regular communication throughout your project. We provide transparent communication, trusted advice, and the best value for your home investment. Treating you like family isn’t just a business decision—it’s who we are.

FREEDOM

Freedom is our core value at Cobex. Founded by Vazgen, son of immigrants seeking freedom, we express this through quality workmanship and professionalism. Every day, we celebrate the opportunity to serve our community and customers with commitment and compassion, never taking our freedom or ability to make a difference for granted.

FAITH

Cobex is founded on faith, guiding our commitment to integrity and transparency. Initially a general contracting business, we focused on exterior services as we grew. Our faith-based values drive our dedication to quality, craftsmanship, and honesty.

Roofing Services We Provide in Walnut Creek

We inspect, repair, replace, and upgrade residential roofs throughout the city, and all of our services point at the same outcome: water stays out and your home holds its value.

Roof Repairs and Leak Response

We repair leaks, replace damaged or missing shingles, rebuild flashing, and seal problem areas. Emergency services are available 24/7, with response prioritized for urgent leaks and storm damage. Catching water early keeps a small repair from becoming interior damage.

Roof Replacement and Roof Installation

A roof installation from us is a complete system: tear-off, decking assessment, underlayment, flashing, ventilation, and new covering. Every proposal states plainly whether the job is a repair, an overlay, or a full tear-off, so you know exactly what you’re comparing.

Roofing Materials: Asphalt Shingles, Metal Roofs, and Tile Roofs

  • Asphalt shingles: decades of service with proper maintenance, and higher fire resistance than wood shakes.
  • Metal roofs: long-term durability and energy efficient performance under summer heat, plus a practical option over low-slope additions.
  • Tile roofs and slate: exceptional longevity, with slate known for lasting a lifetime when maintained.

Metal roofs and tile roofs typically cost more upfront and last longer, and we walk you through that tradeoff before a roof installation begins. Every roofing material we install meets California’s Class A fire-rating standards.

Roof Inspection and Maintenance Program

We document condition with photos and show you what we found. When a full replacement isn’t the right call yet, our maintenance services are an honest step-down option that extends the roof you have.

Solar, Rooftop HVAC, and Storm Damage

We provide solar panel installation with sealed roof penetrations, coordinate rooftop HVAC installation, and document storm damage for homeowners who need help navigating an insurance claim. We can’t promise how an insurance company will rule, but we can give you clear evidence and a straight scope.

Commercial Roofing

We install flat, single-ply, and silicone systems, so local businesses and property managers can get the same roofing services our homeowners do.

Why Walnut Creek Homeowners Hire Us as Their Roofing Contractor

Because we answer the questions that decide a roofing job: are you licensed and insured, will you communicate, and is the quote real. Our CSLB License #1031864 is active, and California requires workers’ compensation coverage for contractors with employees, which we carry for ours. Any roofing project valued at $1,000 or more requires a licensed roofer in this state, so ask for a license number you can verify.

BuildZoom scores us at 131, placing us in the top 1% of 336,931 California licensed contractors. Our official site reports 30+ years of combined experience and 5,000+ satisfied homeowners.

Our crews are in-house, not subcontracted, so the roofer on your roof works for us. You get a project manager, a superintendent, and a Client Success Manager, which is what our concierge service model means in practice: you’re not chasing an update.

We’re not the cheapest bid, and we say so. Get written estimates from a few roofing companies that spell out scope, materials, and timelines, then compare them line by line. We expect that, and financing is available. We explain the manufacturer material warranty (such as the Owens Corning system) and our own workmanship warranty, then point you to the documentation.

Request your free, no-obligation quote.

How a Walnut Creek Roofing Project Works

  • 1. Free inspection. We photograph the roof’s condition and walk you through it.
  • 2. Written scope and quote. Measured roof area, tear-off layers, decking assumptions, materials, underlayment, flashing, ventilation, permits, disposal, and cleanup. If we find unforeseen decking damage, we stop and get your written authorization first.
  • 3. Permitting. We confirm the jurisdiction for your address and submit through Walnut Creek’s online permit portal.
  • 4. Installation and closeout. The City requires an in-progress inspection while the new covering is going on. Inspections are typically performed the day after they’re requested, though next-day service isn’t guaranteed.

What Roofing in Walnut Creek Actually Involves

Mostly older roofs on mid-century homes. Fifty-six percent of the city’s housing, 18,582 units, was built between 1960 and 1979, which typically means mixed decking, legacy flashing, and more than one reroof generation under the current covering.

Parkmead’s 1950s ranches have broad roof footprints, which is why we quote measured roof area and never house square footage. Rancho San Miguel’s roughly 375 Eichlers, south of Ygnacio Valley Road, need low-slope drainage, edge details, and penetrations inspected as one system. In Rossmoor, the approver is often a Mutual or property manager rather than the resident.

Permits for incorporated addresses go through the Building Division at 1666 North Main Street, but parts of Northgate, Saranap, and Walnut Heights carry Walnut Creek addresses under Contra Costa County, so we confirm by address before quoting. Removing and reinstalling rooftop solar or HVAC triggers a separate permit.

Warm dry summers bake a roof, winter concentrates the leak calls, and tree overhangs add maintenance, so spring through early fall is the clearest scheduling window. Along the open-space edges at Shell Ridge and Acalanes Ridge, fire-conscious assemblies matter, and on hillside lots we plan access and staging into the scope.

Frequently Asked Questions

What does a roof replacement cost in Walnut Creek?

There’s no honest flat number, because cost tracks measured roof area, pitch, access, tear-off layers, decking condition, and roofing materials. Some companies quote from house square footage. We measure the roof, then put it in writing, and our free estimates come with no obligation. Get your free quote.

Are you licensed and insured?

Our CSLB License #1031864 is active and verifiable, and we carry workers’ compensation for our in-house crews. Every company you compare should show you a license number and proof that its crews are insured before the job starts.

How much deposit can a roofing contractor ask for?

California law limits the upfront payment on a home-improvement contract to $1,000 or 10% of the contract total, whichever is less. Our schedule follows that, with remaining payments tied to progress.

Do I need a permit to replace my roof?

Yes. A reroof permit is required before a new covering is applied, and we pull it. The City also requires an in-progress inspection during installation. We confirm first whether your address falls under the City or the County.

How long does a roof replacement take?

Straightforward asphalt shingles jobs are typically measured in days. Tile roofs, metal roofs, low-slope systems, and hillside access take longer, and we give you the timeline in writing.

Is my neighborhood in your service area?

Yes. We’re serving Walnut Creek homes and businesses from our Northern California operation, covering Parkmead, Rancho San Miguel, Northgate, Walnut Heights, Rossmoor, and downtown near Broadway Plaza. If you’ve been searching roofing companies near me and want professionals who confirm your permit jurisdiction before quoting, that’s us.

Free Estimates, Serving Walnut Creek Homes and Businesses

We inspect, photograph, confirm your permit jurisdiction, and hand you a clear written scope with no obligation. CSLB License #1031864, in-house professionals on every job, financing available, and support navigating a homeowner’s insurance claim after storm damage.

Contact us at 916-745-6699, email info@cobexcg.com, or request your free quote online.

Get Your Free Estimate Today

Whatever is going on with your roof, you don’t have to figure it out alone. Contact Cobex and we’ll walk you through it, no pressure, no obligation.

Address

Serving California, Fair Oaks, Citrus Heights, Rancho Cordova & Beyond

Cobex operates out of California and Roseville, serving homeowners across California, Roseville, Elk Grove, Fair Oaks, Fresno, and Redding, with additional project history in Citrus Heights, Rancho Cordova, Carmichael, Auburn, Lincoln, and El Dorado Hills.

David Ushakov
Content Creator

What is your favorite thing about your job?

My favorite thing about my job is that I get to come up with cool ideas every day and push myself to always show off Cobex in the best way possible.

One interesting fact about yourself

I’m a triplet.

Thomas Drobkov
Site Supervisor

What is your favorite thing about your job?

My favorite thing about my Job is the community I get to show up to everyday.

How do you integrate the concept of “family” into your job at Cobex?

I integrate the concept of family into my Job by making sure my work here is sincere and considerate.

One interesting fact about yourself

Love to snowboard

Joseph Dallakyan
Site Supervisor

Joseph’s enthusiasm for learning, friendly nature, and commitment to getting things right the first time make him an excellent fit for Cobex. Joseph ensures his team has the resources they need, maintain positive customer interactions, and assist his colleagues in tasks when time is tight.

Joseph’s adaptability, customer-focused approach, and dedication to excellence contribute significantly to his success in customer satisfaction

One interesting fact about yourself

I like to produce music in my free time.

Lucas Lee
Client Success Manager

Lucas is a Sales Representative for Cobex. He has gained significant experience and expertise in the automotive retail industry.

During 4 years in car sales, he honed his skills in customer service and product knowledge. This experience provided him with a deep understanding of various car makes and models, as well as the ability to guide customers through the buying process.

Additionally, he has built a strong network of clients and developed a keen sense for identifying customer needs and preferences, ultimately contributing to his success in the field.

In his spare time, Lucas enjoys spending quality time with family and friends.

What is your favorite thing about your job?

Making a Difference: For some, the opportunity to make a positive impact on society, the environment, or people’s lives is the most fulfilling part of a job a supportive and friendly work environment, along with good relationships with colleagues and superiors, can make a job enjoyable.

How do you integrate the concept of “family” into your job at Cobex?

Like what Dom says in the Fast n the Furious movies, “I Don’t have friends. I’ve got family.”

One interesting fact about yourself

I speak fluent Tagalog

David Leal
VP of Sales

David Leal is the VP of Sales at Cobex. For the past 4 years, has worked with countless customers helping them achieve their home improvement goals and helping our team give every customer an amazing experience.

David is passionate about Sales Leadership because creating a culture of excellence and transparency allows us to help as many people as possible while keeping at the forefront the people we serve, our customers and team members.

David has been recognized in their field for salesmen of the year 4 years in a row, setting company records, and leadership development.

In their spare time, David enjoys traveling with his wife and 3 kids, all things outdoors, and reading some great books. He currently lives in Rocklin, CA.

What is your favorite thing about your job?

Building up people.

How do you integrate the concept of “family” into your job at Cobex?

I seek to serve my team members, the way that I would serve my family.

One interesting fact about yourself

My last name is a Spanish word that means “Loyal”.

Viktor "$Vik" Karplyuk
Superintendent

Viktor Karplyuk is a Superintendent who works at Cobex. For the past 1 year, he has worked on Quality Control, Project management, and vehicle fleet management.

Viktor is passionate about construction because it’s a satisfying job to see an old run-down home turn into a solid, beautiful home.

Viktor has been recognized in his field for quality control and customer satisfaction.

In his spare time, Viktor enjoys spending time with family and going camping. He currently lives in the Greater Sacramento Area.

What is your favorite thing about your job?

Different every day.

How do you integrate the concept of “family” into your job at Cobex?

by being present with family when I’m with family focusing on work when I’m working and cutting out distractions.

One interesting fact about yourself

Love to take ICE cold swims.

Inna Khochay
Bookkeeper

Inna is a bookkeeper who works at Cobex. For the past eight months, when has worked on Accounts Receivable and is responsible for managing and maintaining accurate financial records.

Working closely with project managers and clients to ensure smooth invoicing, timely collections, and accurate reporting.

Inna is passionate about bookkeeping because she loves organization and order.

In her spare time, Inna enjoys spending quality time outdoors with her family. She currently lives in Orangevale, CA with her husband and five kids.

What is your favorite thing about your job?

It’s a great work environment!

Marina "Marina D" Dallakyan
Human Resources / Accounting

Marina Dallakyan is a Human Resources/Accounting pro who works at Cobex. 

She is passionate about people management because she enjoys developing leaders and bettering the workplace culture.

Marina has been recognized in their field for innovation, company culture, and leadership and currently working on her Bachelor’s degree.

In her spare time, Marina enjoys traveling, hiking, and volunteering at her local church. She currently lives in Fair Oaks.

What is your favorite thing about your job?

Working with a great team in a positive environment.

How do you integrate the concept of “family” into your job at Cobex?

We work together as a family unit and support one another in all aspects of our lives.

One interesting fact about yourself

I have hiked Mt. Fuji.

Timothy "Tim" Oleshko
Project Runner

Timothy Oleshko is a project runner who works at Cobex. For the past 6 months, has worked on making sure all crews are set for the rest of the job. Help the crews with errands, materials, and helping out project managers.

Timothy is passionate about construction because, I love to see the production of a roof, from start to finish also I know I will stay in this construction industry for a while.

Timothy has been recognized in their field for construction/ home renovations and graduated from high school two years ago, chasing his passion for building homes.

In their spare time, Timothy enjoys Playing basketball and listening to business podcasts. He currently lives in Sacramento California.

What is your favorite thing about your job?

Work environment.

How do you integrate the concept of “family” into your job at Cobex?

We all respect and help each other.

One interesting fact about yourself

I’m 18 and worked in construction for 6 years.

Samvel "Sam" Gambaryan
Site Supervisor

Samvel Gambaryan is a supervisor assistant who works at Cobex. For the past month, has worked on keeping customers up to date with their home improvement project, helps generate leads, and takes care of things our supervisor might not have time to get to.

Samvel is passionate about construction because he loves to improve homes and create a safe and comfortable place for people to live.

In their spare time, Samvel enjoys going to the gym, reading books, and going on adventures. He currently lives in Rancho Cordova.

What is your favorite thing about your job?

Working with customers.

How do you integrate the concept of “family” into your job at Cobex?

Treat every employee as if they were your own family.

One interesting fact about yourself

I wrestled for 5 years.

Noel Ortega
Production Liason

Noel Ortega is the Production Assistant who works at Cobex. For the past 5 years, he has worked in various departments such as sales, canvassing, customer service, and now production.

He is responsible for pulling all permits, scheduling inspections, registering warranties, and more with being the project manager’s right hand.  He is the point of contact for all of our clients once their contract is signed.

Noel is passionate about production because it’s the reason why people go with Cobex. Fulfilling the original promise and making the vision of the contract come to reality is very satisfying.

Noel has been recognized in the field for accommodating to various changes and growing. In his spare time, Noel is a Youth Pastor and spends time serving the youth of his church. He currently lives in Sacramento.

What is your favorite thing about your job?

The atmosphere and work environment.

How do you integrate the concept of “family” into your job at Cobex?

We are honest with each other and help in what we can.

One interesting fact about yourself

I have a twin brother.

Mason "Moose" Moos
Project Consultant

Mason Moos is a Project Consultant who has worked at Cobex. For the past year, he worked on a number of estimates ensuring the continued workflow of the company.

Mason is passionate about his career in roofing because it allows him the opportunity to help people.


Mason has been recognized in the field for prior accomplishments and has graduated from the FIRES Center of Excellence in Fort Sill, OK.


In his spare time, Mason enjoys going to the gym and spending time with his wife and son.

What is your favorite thing about your job?

Work-life balance and the environment.

How do you integrate the concept of “family” into your job at Cobex?

Trust in the people I work with knowing that we will help one another.

One interesting fact about yourself

I ran a Marathon in Baghdad.

Vitaliy Markevich
Project Consultant

Vitaliy Markevich is a project consultant who works at Cobex. For the past year, has worked on the sales team.

Vitaliy is passionate about exterior construction because he’s been involved with construction ever since he got out of high school and became a contractor.

Vitaliy has been recognized in the construction field for hiring and training installers and running his own crews. Installed several thousand windows and hundreds of siding projects.

In his spare time, Vitaliy enjoys athletics and combat sports. He currently lives in Sacramento, California.

What is your favorite thing about your job?

My favorite thing about this job is that it’s the lowest-stress environment that I’ve ever worked in and such great management as in Cobex is extremely rare and hard to find.

How do you integrate the concept of “family” into your job at Cobex?

Even though we all come from diverse cultural backgrounds, having similar goals and passions and working as a team unites us perfectly

One interesting fact about yourself

I got married at 20 years old and had three children by the age of 24.

Julian Mouer
Project Consultant

Julian Mouer is a Project Consultant who works at Cobex. For the past 5 years, he has worked on helping clients with all home improvement needs from small to big projects to achieve their goals on their homes.

Julian is passionate about Home Improvements because he has always been interested in construction. When in college, he was most passionate about construction, business, and helping others.

Julian has been recognized in their field for going above and beyond for customers and giving the highest quality of customer service.

In their spare time, Julian enjoys being outdoors with family and friends, going to the gym, and traveling. He currently lives in Lincoln, CA.

What is your favorite thing about your job?

Helping others.

How do you integrate the concept of “family” into your job at Cobex?

By treating my customers and co-workers as family.

One interesting fact about yourself

I have studied Civil Engineering and Criminal Justice

Alex Martinez
Project Consultant

Alex Martinez, is a dedicated project consultant within the Cobex team. Over the past year, he has collaborated with a multitude of customers, ensuring seamless progress for their home improvement projects.

Alex Martinez’s passion for the home improvement field stems from its profound impact on enhancing the lives of countless individuals.

In his spare time, Alex enjoys spending time with his family, community, and traveling. Alex currently lives in Sacramento.

What is your favorite thing about your job?

I love my job because it allows me to assist and make a positive impact on people’s lives.

How do you integrate the concept of “family” into your job at Cobex?

The company has a great atmosphere which helps with morale and productivity.

One interesting fact about yourself

I’m also passionate about real estate.

Troy "T" Knox
Client Success Manager

Troy Knox is a Project Consultant who works at Cobex. For the past 2 years, he has worked Online as an Online Sales Consultant for massive online businesses helping businesses scale to 7 and 8 figures by systemizing their sales processes and coaching sales teams.

Troy is passionate about Consulting because he truly believes the best way to sell anything is to do what is right and give the client the best client experience possible, building long-term business relationships.

Troy has been recognized in their field for exceeding expectations and building long-term relationships with his clients.

In his spare time, Troy enjoys boating and spending time with his beautiful wife Kayla and his 1-year-old daughter Bayli. He currently lives in Roseville CA.

What is your favorite thing about your job?

I love building long-term relationships with my clients

How do you integrate the concept of “family” into your job at Cobex?

I integrate the concept of family by treating my team like siblings and treating anyone I work with like an extended family, always going above and beyond expectations.

One interesting fact about yourself

I rode my bicycle across the United States. 

Michael "Mickey" Baggett
Project Consultant

Mickey Baggett is a Project Consultant who works at Cobex. In the past year, he has helped homeowners get the roof they deserve on their homes. He has also helped homeowners through the insurance claims process to receive proper coverage for their roofs.

Mickey is passionate about Project Consulting because he loves to add genuine value to homeowners and meet the needs of people around him.

In his spare time, Mickey enjoys eating great food with his fiancé — soon-to-be wife — and connecting with his community. He currently lives in Citrus Heights.

What is your favorite thing about your job?

I love that my job allows me to meet various people while also serving their needs.

How do you integrate the concept of “family” into your job at Cobex?

As I’m currently in the beginning stages of building a family of my own, my aim is to create a family atmosphere everywhere I go. Cobex has the best work environment I’ve ever been a part of and I want to provide that for the homeowners I meet on behalf of Cobex.

One interesting fact about yourself

My real name is Michael, but I go by Mickey, and I got engaged 2 days after buying my first home. 

Chris Rickon
Client Success Manager

Chris Rickon is a Project Consultant with 7 years of construction experience who works at Cobex. For the past year, I have worked on walking customers through the construction process from quote to completion.

Construction has been a passion for Chris because it is an industry that directly helps people in some of the hardest situations, and with so much misinformation out there it can be difficult to find people to trust.

Chris has been in the industry for 7 years and has been awarded multiple certifications through all facets of the industry.

In his spare time, Chris enjoys making music and being with his wife and son. He currently lives in Pilot Hill.

What is your favorite thing about your job?

The relief on people’s faces when they are finally getting their problem solved and the happiness that we can bring to customs every day.

How do you integrate the concept of “family” into your job at Cobex?

Family really is a Cobex motif. From the way that you are treated as an employee, to how customers are treated, from start to finish everyone working with Cobex is family.

One interesting fact about yourself

I was in a rock band and was signed to a music label.

Pargev Nazaryan
Project Management Intern

Pargev Nazaryan is a project management intern who works at Cobex. For the past 2 months, has worked on making sure each project goes smoothly and hassle-free for our clients.

Pargev is passionate about production because he loves helping clients turn their dreams into reality.

Pargev has been recognized in their field for his great customer service

In their spare time, Pargev enjoys snowboarding and spending time with his Family. He currently lives in Fresno

What is your favorite thing about your job?

Helping clients.

How do you integrate the concept of “family” into your job at Cobex?

At Cobex everyone is treated as family from the customers to the employees, we are all family here.

One interesting fact about yourself

I’m Armenian.

Stan German
Project Consultant

I’m a dedicated roofing consultant with a passion for excellence. With expertise honed through years of experience, I’m your go-to expert in all things roofing. My specialization lies in flat roofs, and my commitment to detail and information ensures that every solution I provide is tailored to perfection. Count on me for comprehensive guidance and a wealth of knowledge in the roofing industry.


What is your favorite thing about your job?

Helping my clients make informative home improvement decisions

Conner Wilson
Conner Wilson
Project Consultant

My name is Conner Wilson, and I work as a Project Consultant at Cobex. I am a new addition to the team and have exemplified my work ethic and passion for this company.

I am currently attending Sacramento State for my Bachelor’s Degree in Criminal Justice. I am a hard worker nonetheless and have shown my ability to be a studious and dedicated individual. In my spare time, I enjoy all outdoor activities such as mountain biking, fishing, and wakeboarding near my residence in El Dorado Hills, CA.

Norberto Diaz
Production Manager

I am passionate about being a Production Manager because I enjoy monitoring the budget and schedules, assigning tasks to crew members, and minimizing errors. In my spare time, I enjoy watching boxing, football and soccer. I also love spending time with my wife and 2 sons.

Vasiliy Starovoytov
Operations Manager

My name is Vasiliy Starovoytov, and I am an Operations Manager at Cobex. For the past few years, I have worked on hundreds of roofs. I am passionate about management because with great management comes good customer service. I have been recognized in my field for countless Leadership Excellence, and Employee of the Year awards. In my spare time, I enjoy off-roading my ATVs with my kids. I currently live in Antelope, CA, and love my small community.

Yuriy Silchuk
Project Manager

I am a Project Manager at Cobex. For the past 6 months, I have worked countless jobs involving attention to customers’ personal expectations and attention to detail. I am passionate about my project management position because it gets me to connect with customers and make their written expectations a reality. I have been recognized in my field for countless satisfied customer projects while going the extra mile to make sure customer satisfaction is at 101%. In my spare time, I enjoy being outdoors and spending time with family and friends. I currently live in the greater Sacramento Area.

Vazgen Dallakyan
Vazgen Dallakyan
Owner

Vazgen Dallakyan is the co-founder and CEO at Cobex. For the past 6 years, Vazgen has worked on business development for Cobex from Sales and Marketing to technology and operations.

Vazgen is recognized for his innovation in marketing and technology implementation for Cobex.

He is an Alumni graduate of Sacramento State College where he earned his Bachelors in Kinesiology and exercise science. In his spare time, Vazgen enjoys spending time with his 3 young children and wife, traveling, and creating new experiences together.


What is your favorite thing about your job?

What I enjoy most about my work is the meaningful work we do and the value of the relationships with my employees and our customers.

How do you integrate the concept of “family” into your job at Cobex?

The concept of family is to love and respect each other. To treat each other with consideration and to put others ahead of ourselves. A strong family consists of trust and respect for each other. At Cobex we treat each other as family and we treat our customers as our extended family.

One interesting fact about yourself

I climbed Mount Fiji.

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