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Find Addition to existing structure builders in Portola Valley

Avatar for G M J Construction Inc.
G M J Construction Inc.
5.0(
13
)

Angi Approved

In business since 2014

Free estimates

Warranties offered

"GMJ is the perfect spot if you are after an outstanding Eichler home. Joseph communication skills are top-notch, and he understood my needs perfectly. They have incredibly creative and brilliant minds and really grasp what the customer desires. Thanks a bunch, Joseph, for all your assistance! I highly recommend this company to anyone in search of the best Eichler Contractor in Sunnyvale!"
Recommended by92%of homeowners
Avatar for DARCO, LLC
DARCO, LLC
5.0(
3
)

Angi Approved

In business since 2019

Free estimates

Warranties offered

"An Absolute Dream – Our Custom Indoor & Outdoor Kitchens Working with Darco Construction was an absolute dream! From start to finish, their team brought an incredible level of craftsmanship, professionalism, and attention to detail to our project. We wanted a modern, high-end indoor kitchen that felt sleek and functional, and Darco delivered beyond our expectations. Every detail—from the custom cabinetry and luxury finishes to the seamless integration of top-tier appliances—was executed with precision. But what truly sets them apart is their work on our outdoor kitchen. We envisioned a space that felt like an extension of our home—perfect for entertaining while offering the durability needed for an outdoor setting. They created a stunning, fully equipped space with custom stone countertops, a high-end grill station, built-in refrigeration, and ambient lighting that makes it feel like a private resort. Throughout the process, the communication was outstanding. Darwin, Larissa, and the entire team kept us informed, guided us through key decisions, and ensured that everything was done to the highest standard. Their commitment to excellence and thoughtful design made all the difference. If you’re looking for a top-tier contractor who can bring your dream home projects to life, look no further than Darco Construction. We couldn’t be happier with our custom indoor and outdoor kitchens!"
Recommended by66%of homeowners
Avatar for Square Three, Inc.
Square Three, Inc.
4.9(
6
)

Angi Approved

In business since 2015

Free estimates

Warranties offered

"Sanjeev has a solid team working for him that is very capable and deliver quality work. Very flexible and always trying to accommodate our needs even with unexpected changes to the project plan. Highly recommended."
Recommended by100%of homeowners
Avatar for Aria Custom Home Builder
Aria Custom Home Builder
5.0(
2
)

Angi Approved

In business since 2006

Free estimates

Customers say: Quick response

"They responded in a timely manner and were able to get the job done quickly to the date we asked with great expertise work. We were very satisfied and will use them again for another project."
Recommended by100%of homeowners
Avatar for ICON Home Builders, Inc.
ICON Home Builders, Inc.
5.0(
2
)

Angi Approved

In business since 2023

Free estimates

Emergency services offered

"Danny's expertise shone through from our very first meeting, where he presented an impressive initial design that immediately instilled confidence in the project's outcome. His meticulous planning and efficient execution made the process nearly effortless for me. Throughout the project, Danny demonstrated exceptional professionalism: He patiently addressed all my questions, ensuring I felt informed and comfortable with each decision. He took charge of the shopping process, offering valuable professional advice on material selections. When the initially chosen tile color didn't translate well from the store to my home, Danny proactively brought a sample for us to evaluate in situ. This attention to detail allowed us to pivot and select a more suitable option that enhanced the overall aesthetic. The final result exceeded my expectations, with Danny's design acumen particularly evident in the enlarged shower space. His thoughtful approach to space utilization has significantly improved the functionality and appeal of the room. Danny's combination of design talent, project management skills, and client-focused service resulted in a fantastic outcome that I'm thrilled with"
Recommended by50%of homeowners
Avatar for Springs Construction Corporation
Springs Construction Corporation
New to Angi

Angi Approved

In business since 1959

Free estimates

Since 1959, Springs Construction has built its reputation on fine craftsmanship, technical expertise and solid project management.We take a proactive, client driven approach to every one of our projects, exceeding our customers vision for their homes. We want you to feel comfortable and safe during the disruption and enjoy your home for years to come.

Eddie Design & Remodeling, Inc.
5.0(
8
)

Angi Approved

In business since 2020

Free estimates

Customers say: Quick response

"Eddie and his team are phenomenal. Eddie gave me great advise which saved me money and my kitchen turned out better than expected. His team is awesome, super professional, nice individuals. Quality of work is impeccable, I couldn't be happier. For my bathroom I'll be contacting Eddie as well. I can't recommend him highly enough."
Recommended by100%of homeowners
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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.