How much does a kitchen remodel cost in the Bay Area?

Every kitchen is different, so every estimate is different. We work with homeowners across the Bay Area on projects of all sizes. We provide a detailed written estimate after our free in-home consultation so you know exactly what your project will cost before any work begins.

How long does a kitchen remodel take?

Most kitchen remodels with Mayer's are completed within 6 to 10 weeks. We give you a detailed project schedule before we start and keep you updated throughout.

Do I need permits for a kitchen remodel in San Jose?

Any kitchen remodel involving structural changes, electrical upgrades or plumbing relocations requires permits. Our team handles the full permit process so you don't have to navigate City Hall.

Can you remove load bearing walls in a kitchen remodel?

Yes. We have an in-house structural engineer who handles all load bearing wall removals with full engineering plans and permits. This is one of the things that makes Mayer's different from most remodeling contractors.

How long does a bathroom remodel take?

Most bathroom remodels with Mayer's are completed within 3 to 6 weeks. We give you a clear project schedule before we start and keep you updated every step of the way.

Can you help me choose the materials and design?

Yes. Our in-house designer works with you from the very beginning to select materials, finishes and fixtures that match your personal style. We create 3D renderings before any work starts so you can see exactly what your bathroom will look like.

Do I need a permit to convert my garage in San Jose?

Yes. Any garage conversion requires permits from the City of San Jose. Our team handles the complete permit process from start to finish.

Will I lose my parking space with a garage conversion?

California law no longer requires replacement parking spaces for garage conversions in most cases. Our team will review your specific property and advise you on parking requirements during your free consultation.

What is design-build and how is it different?

In a traditional project, a homeowner hires a designer and a contractor separately. In a design-build project, one company handles both. At Mayer's, our architect, engineer, designer and build crew all work together under one roof. This eliminates miscommunication and gives you one point of accountability from start to finish.

Do you handle permits for design-build projects?

Yes. We handle every permit filing with the City of San Jose and all Bay Area municipalities. You never need to navigate the building department yourself.

Can you work on occupied homes?

Yes. We have significant experience managing construction and remodeling projects in occupied homes. We plan carefully to minimize disruption and communicate clearly throughout every phase.

Do you handle all permits for construction and remodeling?

Yes. We handle every permit with the City of San Jose and all Bay Area municipalities. We manage every inspection and filing so you never need to deal with the building department yourself.

Room Addition / ADU

Mayer’s Construction & Remodeling

Room Addition / ADU

An ADU or room addition is one of the biggest decisions a homeowner can make. Done right, it adds real value to your property and real quality to your daily life. Done wrong, it costs you time, money and years of frustration.

At Mayer’s Construction, we have been building additions and ADUs across the Bay Area Peninsula for years. We treat every project like it is our own home because that is exactly how Mike and Nathan built this company.

How We Approach Every ADU and Room Addition

Most contractors hand you a contract and start breaking ground. We do it differently. Before anything is touched, our in-house architect and engineer sit down with you to plan every detail of the project. We create full renderings so you can see exactly what your new space will look like before a single wall is moved. You approve the design. You approve the plan. Then we build it.

We handle every permit filing with the City of San Jose and every municipality across the Bay Area. ADU permits in California are complex and the rules change often. Our team stays current on every regulation so your project never gets delayed at the permit desk.

And when the build begins, Mike and Nathan are involved. You have one team from design to final walkthrough. No subcontractors disappearing. No miscommunication between trades. One family business that stands behind every square foot we build.

“We definitely made the right choice hiring Mayer’s Construction for our room addition project. We were very pleased with their consultation, design and their on site work. Mike and his team worked hard and put such great care into our home that it turned into an amazing new space for us.”

— Real client, Bay Area homeowner

What We Handle in Every ADU and Room Addition Project

Full architectural design and 3D rendering

Structural engineering – in house

Complete permit filing and management

Site assessment and feasibility review

Foundation and framing

Plumbing and electrical

HVAC installation

Interior finishes and flooring

Detached ADU construction

Attached ADU construction

Garage conversion to ADU

Junior ADU (JADU) construction

Room additions, bedrooms, offices, family rooms, Second story additions

“We had Mayer’s CNR do a complicated addition and remodel that added a bathroom and expanded the footprint of the house. Very professional, flexible and communicative throughout the project. The project was done on time and within the quoted budget, despite several unexpected complications. The addition is beautiful and the house is much more functional and enjoyable than before.”

— Moris M., Bay Area homeowner

We build ADUs and room additions across San Jose, Los Altos, Saratoga, Menlo Park, Palo Alto, Los Gatos, Sunnyvale, Cupertino, Santa Clara, Mountain View, Campbell, San Carlos, Redwood City, San Mateo, Burlingame and throughout the South Bay Peninsula. If you are in the area, we are your local team.

Frequently Asked Questions

How much does an ADU cost in the Bay Area?

Every ADU is different and every estimate is different. Size, design, site conditions and finish selections all affect the final number. What we can tell you is that we work with homeowners on projects of all sizes and budgets. We provide a detailed written estimate after our free in-home consultation so you know exactly what your project will cost before any work begins.

How long does it take to build an ADU in San Jose?

Most ADU projects with Mayer’s are completed within 4 to 8 months from permit approval to final walkthrough. We give you a clear project timeline before we start and keep you updated throughout every phase.

Do you handle ADU permits in San Jose?

Yes. We handle the complete permit process from start to finish. Our team files all documents with the City of San Jose and works directly with the building department on your behalf. You do not need to step foot in City Hall.

What is the difference between an ADU and a room addition?

An ADU is a fully independent living unit with its own entrance, kitchen, bathroom and living space. It can be detached from your home or attached. A room addition expands your existing home, adding a bedroom, office, family room or other space. Both add significant value to your property. Our team will help you decide which option makes the most sense for your goals during your free consultation.

Can I rent out my ADU in San Jose?

Yes. ADUs are legal to rent in San Jose and throughout California. Many of our clients use their ADU for rental income, multigenerational living or as a guest house. We can advise you on the best design and layout to maximize your rental potential.

Mayer’s Construction & Remodeling

Room Addition / ADU

Room Addition / ADU

Get a free estimate today