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Best basement remodelers near Los Altos, CA

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Top-Rated Basement remodelers in Los Altos - Updated Nov 2026

Avatar for Geico Builders
Geico Builders
5.0(
62
)
Basement - Remodel

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Warranties offered

"We hire Geico Builders for our kitchen remodeling project, and I'm happy to share my experience: working with Zaya and Geico Builders team was a great decision. They were professional, friendly, and easy to work with. Form the start, the process was smooth and efficient. The craftmanship of my remodel kitchen and attention to detail were exceptional, and the end result far exceeded my expectations. From the design phase top completion, their communication was excellent, and I felt completely at ease with them working in my home. The design solutions completely transformed my kitchen, making it both functional and beautiful. I highly recommend Geico Builders for anyone looking for a stress-free and satisfying remodeling experience."
Composite Deck Replacement Trex
Full Backyard Remodel with Outdoor Kitchen
Remodeling - Kitchen & Bathroom Project
Deck Replacement Composit
Composite Deck

+270

Response time1 day
Response rate100%
11 neighbors recently requested a quote
Avatar for Cal Green Remodeling
Cal Green Remodeling
5.0(
18
)
Basement - Remodel

Serving Los Altos, CA and surrounding areas

Approved (Corporate)

In business since 2015

Free estimates

Emergency services offered

"We were looking to remodel our kitchen or bath for a few years. We kept getting estimates from different companies and always felt the price was off or the person was not a good fit. Then, finally, we met Shai with Cal Green Remodeling. What a great guy! He is very upfront and honest about what we can expect in terms of cost and work flow. Because of his honest approach, we hired him. We felt he gave us the good and bad and how to resolve the bad as well. In the end, the process was fairly smooth, and the few hick-ups we had, for example, the city and their permit process, were well explained to us at the beginning, so we were ready. Our kitchen or bath looks amazing, and I plan to work with Cal Green Remodeling again. Thanks Shai!"
Outdoor Gazebo Kitchen Morgan Hill California
Outdoor Gazebo Kitchen Morgan Hill California
Outdoor Gazebo Kitchen Morgan Hill California
Outdoor Gazebo Kitchen Morgan Hill California
Outdoor Gazebo Kitchen Morgan Hill California

+51

Response time1 day
Response rate100%
12 neighbors recently requested a quote
Avatar for Herman Construction Company
Herman Construction Company
5.0(
23
)
Basement - Remodel

Serving Los Altos, CA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"We couldn’t be more thrilled with our kitchen remodel by Karol Herman Construction! From the start, Karol was one of the first to respond, and his professionalism stood out immediately. He was respectful of our time, took the time to listen to our needs, and made sure we were always on the same page throughout the process. The remodel was seamless and went exactly as planned. Karol worked around our schedule, always followed up on questions at the end of each day, and ensured everything was on track. His attention to detail is second to none—he is truly a perfectionist at his trade. Plus, he was extremely conscious of our living spaces, keeping everything clean and organized. We are so pleased with the results and highly recommend Karol Herman Construction to anyone looking for a reliable, skilled, and thoughtful contractor! Check out our dream Farmhouse style kitchen!"
Home Addition
Home Addition
Home Additon
Home Additon
Home Addition

+25

Response time7 hrs
Recommended by78%of homeowners
Avatar for BEAR Remodeling Inc.
BEAR Remodeling Inc.
4.8(
29
)
Basement - Remodel

Serving Los Altos, CA and surrounding areas

Approved

In business since 2019

Credit card accepted

Customers say: True professional

BEAR Remodeling is a full-service design-build contractor specializing in homeowners projects that are planning larger renovations and that require expert designing, permitting , and quality craftsmanship from start to finish. ADU's, additons, Garage Conversions, Loft and Basement conversions, and Full Kitchen and Full Bathrooms- If you do not see your project listed * Please call us!! Don't wait to create your dream home! ? Our new financing options make your remodel projects affordable NOW. ? Limited-time rates available?click the link to get started! ??https://www.enhancify.com/bear-remodeling-inc (we do not work with modular/trailer homes or offer handyman services.)

Project Photos
17 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Basement - Remodel

Serving Los Altos, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We hired McCormick Home Builders to remodel our living room, and we are beyond pleased with the result. The team was professional, worked efficiently, and Aris design ideas made a huge difference. The room feels so much brighter and more spacious. This was the best decision we made for our home, and we were already planning our next remodel with them."
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.
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for Gold Bay Builders, Inc.
Gold Bay Builders, Inc.
5.0(
10
)
Basement - Remodel

Serving Los Altos, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"David is an excellent person to work with, I hired him to build a fence in my backyard. Him and his team left my place very clean looking spectacular. Beautiful fence! I always recommend David to my own clients. Thank you David!"
9 neighbors recently requested a quote
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Basement Remodel FAQs, answered by experts

When considering finishing your basement, take into account a few pros and cons:

Pros

  • Can increase the value of your home

  • Separate space from the rest of the house 

  • Customize and personalize the basement to suit your needs and style

  • Increase the amount of living space in your home

Cons

  • May not regain enough value to cover the cost of finishing

  • Lack of natural light if it’s below ground level

  • Moisture or flooding can cause costly damage

  • Installing plumbing and electrical can be messy and costly

Yes, most general contractors require an initial down payment, typically between 10% and 25% of the total project cost. This upfront payment helps cover the costs of materials, permits, and subcontractors. The remaining project costs are usually billed after specific project milestones are reached or on set completion dates, as outlined in your contract. Be wary of contractors who require a significant deposit of 50% or more upfront, as this could be a red flag for a scam.

In many homes, an unfinished basement is an ideal place for an in-ground pool. The concrete floors, protection against water damage, and access to the ground below your home make this a large contender. Speak with a local basement remodeling contractor to ensure your space is right for the large construction.

Common mistakes when finishing basement walls include neglecting proper insulation, insufficient moisture management, and poor ventilation. Not addressing these issues can lead to mold growth, water damage, and discomfort. Additionally, inadequate planning, improper framing, and rushing the project can result in subpar outcomes. 

It's essential to follow best practices, seek professional guidance if needed, and prioritize thoroughness and attention to detail.

The time it takes to finish or remodel a basement can vary significantly, ranging from a few weeks to several months or even up to a year. On average, the construction phase can take four to eight weeks, but the total project time can extend to three or four months when including planning and permits. The timeline depends on several factors, including the basement's size, design complexity, the scope of the work, and your contractor's availability. A more detailed breakdown for an average-sized basement might include: framing (3-5 days), electrical and rough-in plumbing (3-5 days), drywall installation (5 days), flooring (2-3 days), and final touches like painting and trim (about a week). If preliminary work like installing a waterproofing system or addressing structural issues is needed, the timeline could extend to six to twelve months. Factors like difficult access, material transport, and ventilation needs can also add to the project's duration.

The Los Altos, CA homeowners’ guide to basement remodels

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