Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Mountain View, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Addition to existing structure builders in Mountain View

Avatar for OT Bay Builders
OT Bay Builders
5.0(
109
)

Serving Mountain View, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Our basement went from a dark storage area to a cozy family room and home office. The remodel was smooth from start to finish. Great communication, thoughtful design ideas, and skilled workmanship throughout."
Broadway Kitchen Remodel
Broadway Full Kitchen remodel
Broadway Full Kitchen remodel
San Francisco Contemporary Kitchen Remodel
San Francisco Contemporary Kitchen Remodel

+81

Response time12 hrs
Response rate98%
1 neighbors recently requested a quote
Avatar for Herman Construction Company
Herman Construction Company
5.0(
22
)

Serving Mountain View, CA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Karol is a very nice guy to work with. He is approachable, easy to communicate with. He goes through the project from end to end on our first visit, explain how he would build the frame, cut the wood, the timeline. He also finds a stone guy and coordinates the work. When actually doing the work, he puts cardboards on our floor to avoid scratching. Upon request, he also did a prototype for us, and when we change our mind to use a different style, he redoes the bulk of the project. I would recommend Karol to anyone who needs carpenter work!"
Home Addition
Home Addition
Home Additon
Home Additon
Home Addition

+25

Response time7 hrs
Recommended by81%of homeowners
Avatar for Tool Time Home Improvement
Tool Time Home Improvement
4.6(
206
)

Serving Mountain View, CA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"The attic fan went very well. Troy was able to isolate and seal the flashing issue that was causing our roof leak, however after further investigation, requiring the removal of some siding, we found some more serious structural damage to the studs in the wall. This seemed to be a beyond his expertise as a 1-man job, so we opted to have him stop there and will bring in a construction contractor to make these repairs. We are very pleased with the work Troy did and would not hesitate to contact him again. We are grateful he was dedicated enough to look into the damage further, otherwise we never would have seen the interior damage."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Response time1 day
15 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Future Vision Remodeling
Future Vision Remodeling
4.9(
57
)

Serving Mountain View, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"The finished work turned out beautifully but the length of time it took the crew to complete the job could have been better. The project manager was great to work with and very responsive however there are a couple of small details that I am waiting for them to resolve."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+555

Response time7 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for Skytech Builders
Skytech Builders
5.0(
21
)

Serving Mountain View, CA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"After I contacted several contractors on a room addition I decided to go with Sky Tech Builders and I can tell that it was a really easy decision because they gave me great offer and they completely understood what I wanted to do. They were also available on acceptable time and project started soon after we signed a contract. The project manager and his crew were professional, honest, helpful and very respectful to me and my home. They finished project within time they promised and within my budget. And final outcome is excellent, I am fully satisfied with everything they did and would definitely work with Sky Tech Builders again!"
Master Bathroom Remodel in San Jose.
Kitchen Remodel in San Mateo
Kitchen remodeling in Fremont
Master Bathroom Remodel in San Jose.
Kitchen Remodel in San Mateo

+63

Response time1 day
32 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for BE HOME REMODELING INC
BE HOME REMODELING INC
4.9(
66
)

Serving Mountain View, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"I had an amazing experience with Be home Remodeling, I want to thank Josh Zack's and his team of dedicated professionals for the amazing job they did on my master bathroom. Josh?s dedication and communication was crucial in ensuring the job was done quickly and professionally. He was is always available and provided quick response! We decided to do a bathroom remodel a couple of weeks ago. The entire process was done properly and as described to me at the start. Project was on schedule and went extremely smooth. The workers and staff were really professional, polite and easy to work with. I highly recommended BE Home Remodeling and specifically Josh Zack."
full house remodeling
full house remodeling
full house remodeling
full house remodeling
full house remodeling

+31

Response time1 day
Response rate98%
605 neighbors recently requested a quote
Avatar for Zacarias Remodeling Construction
Zacarias Remodeling Construction
5.0(
33
)

Serving Mountain View, CA and surrounding areas

Approved

In business since 2009

Free estimates

Customers say: True professional

"Zacharias Remodeling Construction did an outstanding job remodeling my mom‘s kitchen in July 2025. Oscar, the contractor, was professional, responsive, and easy to work with from start to finish. His team was meticulous with every detail and always arrived on time which made the entire process, smooth and stress-free. This was especially important to me as I had experienced a contracting company in the past where the workers did not show up on time (or at all), cut corners, and it made for a lousy 2 months. The finished kitchen looks beautiful and without hesitation, Zacarias remodeling construction will be my first call for future projects."
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
New kitchen, bedroom and bathroom
Remodeling - General Project

+50

24 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Bay Easy Construction
Bay Easy Construction
4.3(
154
)

Serving Mountain View, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"It was a challenging time to undertake this project between COVID, engineering errors (not the builder), labor shortages, and the price of lumber. I would not say it was easy, but the end result is a very well built, comfortable, attractive, and energy efficient living space. I learned a lot from this project and provided feedback to the contractor about what I didn't know about the process when we began and what others would benefit from. One key item is a clear list of what the "finishing" materials are and a schedule indicating when these materials are needed. I recommend that anyone working on a building project of this intensity insist upon a detailed list as part of the contract and in advance of the work beginning. Since our work was done, this contractor has hired two additional people to focus on those types of needs. The people performing the labor were always polite, friendly and respectful of masking and social distancing. We felt comfortable with them around our home. One thing that could have been better is more orderly disposal of materials and separation of recyclable and non-recyclable items."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time10 hrs
8 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Bay Builders & Remodeling Inc.
Bay Builders & Remodeling Inc.
4.3(
82
)

Serving Mountain View, CA and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"We first heard about Bay Builders from a realtor friend who highly recommended them. We interviewed multiple contractors, all of whom had done nice work, but Bay Builders really stood out right from the beginning. During the proposal process, they came to the house a few times to ensure they captured the full scope of the project. Additionally, we wanted to see their quality of work so Gilad arranged a few site visits and connected us with past clients who all raved about Gilad and his team. It was clear that Bay Builders was the best choice for quality and speed. From the beginning of the process until the end, Bay Builders was exceptional to work with. We had a dedicated project manager, Tomar, who really helped communicate what was happening that week and managed the subs. More importantly, Tomar was such a pleasure to work with. He is very approachable, detailed and diligent. I've heard nightmare stories about other contractors being slow, hard to contact and missing deadlines, but Gilad and Tomar made the entire process stress free and enjoyable! They were great about keeping us informed about what was going on, what decisions needed to be made so that we could stay on schedule. If any issues arose, Gilad and Tomar would always come to the table with a solution and assure us that at the end of the day, they wanted to make sure we were happy. The quality of their work is outstanding and our project finished on time which is rarity given the complexity and change orders associated with our remodel! They have excellent communication skills, are very detail oriented and most importantly, have your best interest at heart. I would highly recommend them. Everyone who has seen the finished product is blown away by the transformation. We are so happy with how our home turned out."
This image depicts a modern and well-lit dining area with a sleek and stylish design. The room exudes a contemporary elegance, marked by its clean lines and sophisticated features.

1. **Dining Table:** The central feature is a large rectangular dining table with a solid surface, surrounded by eight chairs with white upholstery, providing ample seating for gatherings.
2. **Lighting:** Above the dining table hangs a modern chandelier with an industrial design, featuring multiple light bulbs susp
The space showcases a sophisticated modern design with light wooden flooring that extends throughout the area, creating a warm and inviting ambiance. A prominent feature is the glass railing that lines the staircase, which adds to the open and airy feel of the space. The staircase itself is composed of light wood steps, seamlessly blending with the flooring. On the wall adjacent to the stairs, there is a large wooden panel, contributing to the clean and cohesive aesthetic. The ceiling is fitted
This image depicts a modern, well-organized laundry room with a clean and functional design. The room is designed to maximize efficiency and storage while maintaining a sleek and minimalist aesthetic.

1. **Cabinetry:** Light wood cabinets are installed above and below the countertop, providing ample storage space for laundry supplies and other essentials. The upper cabinets extend across the wall, offering plenty of room to keep items neatly tucked away.
2. **Countertop:** The countertop is ma
This image depicts a modern, minimalist shower space with a clean and elegant design. The shower area features large beige tiles covering the walls and floor, creating a cohesive and sophisticated look. 

1. **Shower Fixtures:** The showerhead is a sleek, modern rain shower type, mounted high on the wall. Adjacent to it is a hand-held shower wand with a simple, streamlined design.
2. **Bench:** A floating bench made of light-colored stone or composite material is installed along one wall, provi
This image shows a modern office space characterized by its minimalist design and functional layout.

1. **Glass Doors:** The office is enclosed with black-framed glass doors, providing a stylish and transparent barrier that maintains privacy while allowing light to flow through.
2. **Desk and Chair:** Inside the office, there is a sleek glass desk paired with a cushioned office chair, creating a functional and stylish workspace.
3. **Wall-Mounted TV:** A flat-screen TV is mounted on one wall,

+122

10 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for On Design & Remodeling INC
On Design & Remodeling INC
5.0(
46
)

Serving Mountain View, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Credit card accepted

"We just finished to build an ADU in the backyard with ON Design & Remodeling. In the beginning we met Aviv and he guided us with his team along the design process. They helped us to get the permit faster and choosing all the visible materials before starting the work. During the construction we received weekly updates regards the process so we always knew what to expect. We build the unit for my parents and they are so happy with their new small home, and to share the yard together with us. Currently we are in the planning process to remodel our main resident kitchen with ON team, so obviously we are so happy working with this amazing team."
The Willow Oaks project
First floor kitchen and stairs
Master Bathroom remodeling
Open concept Kitchen
The Willow Oaks project

+399

Response time2 days
Response rate94%
39 neighbors recently requested a quote
...
Showing 1-10 of 575
FAQs for addition to existing structure building service projects in Mountain View, CA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Mountain View, CA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.