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J A Serrano Construction

Contractor - Remodeling & Additions
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Marin  Napa  Sonoma Counties
Diamond Certified Company Report
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J A Serrano Construction
10 SURVEYS
  • star image
  • star image
  • star image
  • star image
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  • Rating
3 CONSECUTIVE YEARS
SINCE JANUARY 2023
CERT 2702

Diamond Certified Ratings Dashboard

10

Verified Customers

Surveyed

Customer Loyalty

Customer Satisfaction

Helpful Expertise

READ ALL 10 SURVEY RESPONSES

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Company Report Menu

  • Survey Responses
  • Diamond Certified Video Player
  • Researched Articles & Profile
  • Capabilities
  • Photos
  • Website & External Feeds

Diamond Certified Company Report SUMMARY UPDATE April 2025

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J A Serrano Construction

Rated Highest in Quality and Helpful Expertise for 3 Consecutive Years.

Quick Summary

  • Diamond Certified since 2023
  • Provides various general construction services for homeowners in Marin, Napa and Sonoma Counties
  • Offers free estimates
  • Performs specialty work like drywall repairs and electrical installations

Top News Updated

COMPANY MILESTONES

J A Serrano Construction is celebrating its 5th anniversary in 2025.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They’re professional and they do high-quality work. Everything is done with regard to [building] codes.”

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From a recent Diamond Certified Survey Response: “I would recommend them. They’re good at identifying problems and issues.”

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Trending Projects

J A Serrano Construction recently completed a home renovation project in Santa Rosa. The client noted that the workmanship was excellent and fairly priced, which led her to hire the...

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J A Serrano Construction
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Diamond Certified Video Reports on J A Serrano Construction

J A Serrano Construction - Diamond Certified Video Profile

Diamond Certified Researched Articles on J A Serrano Construction

researched article

This kitchen remodeling project in Santa Rosa features new flooring and recessed lighting.

J A Serrano Construction remodels kitchens and bathrooms; builds custom homes; and provides various general construction services for residential clients in Marin, Napa, and Sonoma Counties. The company has the in-house capabilities to handle every phase of its customers’ interior and exterior renovation projects, including specialty work like electrical installations and drywall repairs.

Owner Jose Serrano says J A Serrano Construction’s customer-oriented business practices have been crucial to its success. “We want our clients to have great construction experiences, so we take the time to explain our work and give them ideas about what they can accomplish. They know we’ll always be available to help them when they call, even if it’s for something small.”

J A Serrano Construction prioritizes communication throughout each step of the construction process, which Mr. Serrano says is important for ensuring positive results. “We keep our clients informed about the details of their projects and answer their questions if they need clarification about certain aspects. Keeping them engaged is the best way to make sure they’re happy with everything that we’re doing.”

“We must be dedicated to take pride in our workmanship and ensure our customers’ priorities become our priorities. Our personal satisfaction should be derived from being a first-class, grade A construction company capable of unequaled craftsmanship and performance. Our top priority is to meet the expectations of the customer by exceeding the standards of the company. To have continued success, we must develop long-term relationships with our customers by understanding their objectives and performing to meet them.”

If you’re taking on a remodeling project, look for a contractor that’s knowledgeable about local codes.
State and city codes mandate design and building specifications, including the height of railings and windows, the types of materials used, and special installation requirements. Whether you like them or not, you and your contractor are legally required to abide by code regulations. “Codes and regulations change every year, so your contractor should be up-to-date on those changes,” affirms Jose Serrano, owner of J A Serrano Construction in Santa Rosa.

As a homeowner, you’re ultimately responsible for working with a contractor that follows these codes; otherwise, you could be held liable for repairs. For example, you might not realize that if your home was built before 1978, your contractor must be EPA Lead-Safe Certified because the house may contain lead paint. Contractors that aren’t certified can spread harmful lead dust throughout your home, so it’s important to hire a company that will take the necessary precautions and has the certifications to work in that type of environment.

Another item required by local codes is the installation of smoke and carbon monoxide detectors. Every floor of your home must have at least one detector. In fact, if you’re doing a major remodel, the building codes may even mandate that you hardwire alarms into your home. A quality contractor will be aware of this and other work that triggers codes.

Being aware of codes (or hiring a contractor that is) can help you avoid unexpected costs associated with code requirements. If you want to remodel your kitchen, hire a contractor that knows the project requirements beforehand. You don’t want to open up a wall or tear out your existing kitchen only to discover that codes require additional safety features or other changes that add to your budget.

When it comes to hiring a contractor, along with the basics of verifying license and insurance, you should spend time with the company owner or project manager who’s assigned to your job. “Asking a lot of questions will give you insight into how the company will handle your specific job,” says Mr. Serrano. “Most construction projects last for weeks and are big investments, so it’s important to find someone trustworthy.”

Maintaining customer satisfaction is a crucial aspect of any business, but it’s even more important for remodeling contractors that have earned the prestigious Diamond Certified award. For J A Serrano Construction, keeping clients happy comes down to two main factors: take a detail-oriented approach to their projects and take the time to answer their questions. “We always go over the way the finished job will look so the client knows what to expect and we can make changes if we need to,” explains owner Jose Serrano. “At the end of the day, our customers are like family to us, and we treat them as such by always being there for them.”

J A Serrano Construction has been remodeling kitchens and bathrooms; building custom homes; and providing general construction services for residential clients in Marin, Napa, and Sonoma Counties since 2020. The company is qualified to handle every phase of the interior and exterior renovation process, including electrical installations, drywall repairs and other specialty work.

Unlike less experienced contractors that take a “one size fits all” approach to every project, J A Serrano Construction listens closely to its clients and gives them feedback about how to achieve their remodeling goals. “We have a lot of experience, so we can give our customers ideas and help them determine how their projects should look,” affirms Mr. Serrano. “By taking the time to understand exactly what they want, we can bring their visions to life.”

Another distinguishing feature of J A Serrano Construction is its dedication to jobsite cleanliness, which Mr. Serrano says is the key to achieving positive results. “A clean jobsite is a safe jobsite, so we never keep things laying around and we pay attention to details so we can make sure everything is going according to plan. Our clients really appreciate how much care we put into our work.”

Jose Serrano, Owner-J A Serrano ConstructionJose Serrano, Owner

Diamond Certified Researched Capabilities on J A Serrano Construction

Service Area

serving area
Marin County
Napa County
Sonoma County
Serving Marin, Napa and Sonoma Counties

Main Services

Contractor - Remodeling & Additions
  • Basement Remodeling
  • Bathroom Remodel
  • Bathroom Renovations
  • Bathtub Replacement
  • Custom Home Remodeling
  • Garage Remodel
  • Home Remodeling
  • House Remodeling
  • Kitchen Remodel
  • Shower Remodel
  • Sunroom Addition
  • Tub To Shower Conversion

Additional Services

Kitchen & Bathroom Remodeling
New Construction
Custom Homes
Electrical & Plumbing
Interior & Exterior Painting
Drywall Repairs

Company Info

Hours
Mon
07:00 am - 05:00 pm
Tue
07:00 am - 05:00 pm
Wed
07:00 am - 05:00 pm
Thu
07:00 am - 05:00 pm
Fri
07:00 am - 05:00 pm
Sat
08:00 am - 12:00 pm
Sun
Closed
Open Now
Mon – Fri: 7am – 5pm
Sat: 8am – 12pm
Website
Contact
J A Serrano Construction

Capabilities Table

Company Name
J A Serrano Construction
Phone Number
DCID Number
DCID7073323987
Managers
Jose Serrano, Owner
Years in Industry
15 (Manager)
# of Employees
7
License
1076726
Insurance
Liability Insurance,
Workers' Compensation
Founded
2020
Customer Type
Residential
Warranties & Guarantees
1-Year Warranty on Labor
Payment Accepted
american express,
discover,
mastercard,
visa

Certifications & Awards

diamond certified logo

Key Factors

J A Serrano Construction Family Owned
Family Owned
J A Serrano Construction Residential & Commercial
Residential & Commercial
J A Serrano Construction Free Estimates
Free Estimates
J A Serrano Construction Appointments Available
Appointments Available
J A Serrano Construction Live Phone Call Answers
Live Phone Call Answers
J A Serrano Construction Worksmanship Guaranteed
Worksmanship Guaranteed

Select Photos From J A Serrano Construction

1 of 7Picture of J A Serrano Construction remodeled this bathroom in Fairfield. - J A Serrano Construction
J A Serrano Construction remodeled this bathroom in Fairfield.
Picture of J A Serrano Construction remodeled this bathroom in Fairfield. - J A Serrano Construction
Picture of J A Serrano Construction remodeled this bathroom in American Canyon. - J A Serrano Construction
Picture of J A Serrano Construction remodeled this bathroom in Mill Valley. - J A Serrano Construction
Picture of J A Serrano Construction remodeled this bathroom in Vallejo. - J A Serrano Construction
Picture of J A Serrano Construction remodeled this bathroom in Novato. - J A Serrano Construction
Picture of J A Serrano Construction remodeled this bathroom in Forestville. - J A Serrano Construction

J A Serrano Construction Website and External Feeds

FAQs

By J A Serrano Construction

How long will it take to complete my project?

How much will it cost to remodel my house?

Will you provide the materials for the job?

Will you work with inspectors to get my job finalized?

J A Serrano Construction Ratings and Survey Responses

diamondcertified logo
J A Serrano Construction
10 SURVEYS
  • star image
  • star image
  • star image
  • star image
  • star image
  • Rating
3 CONSECUTIVE YEARS
SINCE JANUARY 2023
CERT 2702

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Phone Survey Responsesfrom 10 Verified Customers

Jesus A.

They are professional and do high quality work.

I think they just do things correctly and everything is done with regard to codes and everything.

Verified Customer of J A Serrano Construction, 1 of 10

10 Quality
Yes Loyalty
Nick N.

I think he does everything correctly.

The quality of their work

Verified Customer of J A Serrano Construction, 2 of 10

10 Quality
Yes Loyalty
Julie

Use him, Jose is great.

Him and his guys do great work.

Verified Customer of J A Serrano Construction, 3 of 10

10 Quality
Yes Loyalty
Ramon O.

I would recommend them.

Everything

Verified Customer of J A Serrano Construction, 4 of 10

10 Quality
Yes Loyalty
Jane

He did a great job.

They do quality work.

Verified Customer of J A Serrano Construction, 5 of 10

10 Quality
Yes Loyalty
Aria

Nothing

They are very professional.

Verified Customer of J A Serrano Construction, 6 of 10

10 Quality
Yes Loyalty
Olivia

Nothing

Everything

Verified Customer of J A Serrano Construction, 7 of 10

10 Quality
Yes Loyalty
Harper

I would recommend getting everything written down before starting.

He was kind and helpful.

Verified Customer of J A Serrano Construction, 8 of 10

9 Quality
Yes Loyalty
Jeff

I would recommend them.

He is good at identifying problems and issues.

Verified Customer of J A Serrano Construction, 9 of 10

9 Quality
Yes Loyalty
Magy

Everything was okay.

Everything

Verified Customer of J A Serrano Construction, 10 of 10

9 Quality
Yes Loyalty
READ ALL 10 SURVEY RESPONSES