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Find Addition to existing structure builders in Castro Valley

Avatar for OT Bay Builders
OT Bay Builders
5.0(
77
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"We love our new deck! It’s sturdy, beautiful, and adds so much value to our backyard. The team listened to what we wanted and delivered exactly that, right down to the custom railing and built-in seating."
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%
2 neighbors recently requested a quote
Avatar for Dynamicz Construction, Inc.
Dynamicz Construction, Inc.
5.0(
59
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"With this team, my addition build turned out very well. The quality of their work is very good and we are happy at everything, they created everything that we wanted without hassle and the whole project went smoothly. "
Lafayette Home Remodel
Lafayette Home Remodel
Lafayette Home Remodel
Lafayette Home Remodel
Lafayette Home Remodel

+25

Response time1 day
Response rate99%
3 neighbors recently requested a quote
Avatar for Future Vision Remodeling
Future Vision Remodeling
4.0(
8
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

In business since 2013

Free estimates

Credit card accepted

"The bathroom remodel went well. The completed work was beautiful and completed on time. Especially great job on the tile work. Would definitely hire again"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+555

Response time7 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Rose Remodeling & Design Inc.
Rose Remodeling & Design Inc.
4.8(
51
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"A recent kitchen remodeling service from Rose Remodeling & Design Inc. turned out to be quite disappointing. The project began with big promises about quality craftsmanship and efficient completion, but the reality was very different. The work progressed slowly, and updates about the schedule were rarely provided. Several parts of the installation looked uneven, and some cabinet fittings were not properly aligned. Concerns raised during the process did not receive quick responses, which made the experience even more frustrating. In the end, the kitchen renovation did not meet the expectations set at the beginning of the project."
PHOTO ALBUM
PHOTO ALBUM
PHOTO ALBUM
PHOTO ALBUM
PHOTO ALBUM

+110

Response time6 hrs
Response rate94%
15 neighbors recently requested a quote
Avatar for My Construction Group
My Construction Group
4.8(
182
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"I had the pleasure of working with Ariel from My Construction Group for a fairly large remodel (two balconies, one room addition, and one great room expansion) project on my home. I was very pleased with the completed work and even more impressed with their attention to the customer experience. This truly differentiated them from other contractors I have worked with. I would highly recommend My Construction Group to everyone."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+110

Response time2 days
16 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Skytech Builders
Skytech Builders
5.0(
21
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

In business since 2013

Free estimates

Warranties offered

"The Hall and Master Bathrooms were fully renovated with new cabinets, countertops, showers and fixtures. Leo from Skytech assisted me along the way with option choices and recommendations. The crew was exceptional in their workmanship and were very detail oriented and made sure to clean the area prior to departure each day. I have received multiple compliments on the finished bathrooms. I would highly recommend Skytech Builders to anyone considering renovations and Leo in particular."
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
36 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Tech Line Construction, Inc.
Tech Line Construction, Inc.
5.0(
13
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

In business since 2007

Free estimates

Emergency services offered

"Tech Line Construction was easy to work with. They showed up when scheduled and finished the project as discussed. The workmanship was solid, and communication was consistent throughout."
Fremont
Fremont
Remodel
Beautiful Kitchen Remodel
Beautiful Kitchen Remodel

+28

Response time2 days
12 neighbors recently requested a quote
Recommended by61%of homeowners
Carnhill Construction
5.0(
15
)

Serving Castro Valley, CA and surrounding areas

Angi Approved

In business since 2025

Free estimates

Credit card accepted

"We want to add to our earlier review. Carnhill Construction has been our go to for the past 6 years. They have dealt with a stone deck that kept leaking refuse down the facade, painted our entire house inside and out more than once, had our wood floors sanded and refinished, repaired cracks and leaks in the siding of the house, repaired a balcony. They have been very creative and innovative in coming up with fixes. As we stated earlier they are professional, reliable, consistent and their communication is immediate. We rely on them to deal with any house repair we need. They are a pleasure to work with. We would recommend them highly to anyone needing any house repairs whether a small or extensive project. "
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
5 neighbors recently requested a quote
Showing 1-10 of 49
FAQs for addition to existing structure building service projects in Castro 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 Castro 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.