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Find Addition to existing structure builders in Portola Valley

Avatar for My Construction Group
My Construction Group
4.8(
182
)

Serving Portola Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"My friend recommended My Construction Group and when I saw how many positive reviews they have I sent a quote. I got response very soon and estimate next day. I was satisfied and decided to hire them. The project was building an addition 250 sq. ft. Before start Ariel explained me every single detail about project and that was very professional from him. He and his crew were really great, worked hard, kept eye on everything and cleaned after themselves. It was a big project so normally there were some issues but nothing serious and they finished on promised time. Excellent work guys, highly recommended company."
Additional Photos
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+110

Response time2 days
7 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for OT Bay Builders
OT Bay Builders
5.0(
77
)

Serving Portola Valley, 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%
3 neighbors recently requested a quote
Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
5.0(
48
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 1983

Free estimates

Warranties offered

Unique Home Design & Remodeling is a leader in providing value-added construction services to our customers by creating a successful partnership throughout the construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member on our construction team. Unique Home Design & Remodeling's mission is to accomplish full customer satisfaction in every area possible from color selection to project completion. Unique Home Design & Remodeling's main focus is to provide our future clients with a professional home improvement experience. We vow to our customers with the highest level of quality construction services at fair market and competitive prices. To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes.

Response time2 days
36 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Skytech Builders
Skytech Builders
5.0(
21
)

Serving Portola Valley, 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
30 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Rose Remodeling & Design Inc.
Rose Remodeling & Design Inc.
5.0(
62
)

Serving Portola Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Adir and his team exceeded all expectations with our ADU project. They helped us refine our design, handled permits efficiently, and executed the work beautifully. Every part of the build shows quality and care. What I appreciated most was their communication. They kept us informed the entire time. It?s rare to find a company this reliable."
PHOTO ALBUM
PHOTO ALBUM
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PHOTO ALBUM
PHOTO ALBUM

+110

Response time6 hrs
Response rate94%
22 neighbors recently requested a quote
Avatar for Bay Remodeling Kitchen & Bath
Bay Remodeling Kitchen & Bath
5.0(
50
)

Serving Portola Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"To create my ideal kitchen, the staff at Bay Remodeling Kitchen & Bath went above and beyond. They listened to my thoughts, made useful recommendations, and transformed my kitchen into a lovely, hospitable area."
Palo Alto full Home Remodel
Full Bathroom Remodel Mountain Veiw, CA
Portola Valley, CA
Bathroom Remodel in Palo Alto, CA
Bathroom Remodel San Jose, CA

+183

19 neighbors recently requested a quote
Recommended by72%of homeowners
Avatar for Royalty Builders, Inc.
Royalty Builders, Inc.
5.0(
14
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Great customer service. Leroy designed and managed to build a very nice finish product, we like it very much, our new house looks amazing, Thanks!"
Construction & Remodeling
KITCHEN REMODELING
Construction & Remodeling
NEW CONSTRUCTION
KITCHEN REMODELING

+35

Response time2 days
Response rate97%
11 neighbors recently requested a quote
Avatar for Bay Easy Construction
Bay Easy Construction
4.7(
116
)

Serving Portola Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"Excellent experience. The price was fair, Ofer was very flexible and responsive to what we needed, and his team were punctual, professional, and efficient. When other contractors would take days to respond and provide estimates, Ofer always got back to me in a couple of hours at most. Adding the skylight took only two days, and the only additional cost was for the skylight itself (about 200$) and paint (about 40$)."
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+13

Response time10 hrs
7 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Future Vision Remodeling
Future Vision Remodeling
4.0(
8
)

Serving Portola Valley, 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%
7 neighbors recently requested a quote
Avatar for Sigura Construction Inc
Sigura Construction Inc
4.7(
45
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"Sigura made everything go so smoothly, even though it rained off and on. They made the timing work and got the entire project completed within just a few days. Their paint work was excellent, with clean lines, perfect color matching, and great detailing. They fixed my chimney top: My brick chimney was painted over with a cream color and looked so tacky, and now it actually looks like the bricks are in its original condition! There are no paint drips or sprays where there shouldn’t be. The garage looks brand new, but it’s really not. The entire crew and office team were polite, friendly and professional, making the whole experience amazing."
Bathroom Remodel
Guest Bathroom
Upstairs Bathroom 2
Upstairs Bathroom 1
Downstairs Restroom

+107

Recommended by75%of homeowners
Showing 1-10 of 44
FAQs for addition to existing structure building service projects in Portola Valley, 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 Portola Valley, 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.