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Find Basement remodelers in Petaluma

Avatar for Bielefield Construction, Inc.
Bielefield Construction, Inc.
4.9(
8
)
Basement - Remodel

Serving Petaluma, CA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"We found Bielefeld Construction on Home Advisor and was surprised when Ray responded because we hadnâ t previously had a lot of luck on Home Advisor. We hired them for a master bedroom remodel and are very happy with the final outcome. We made a few changes here and there and Ray was very accommodating. All employees and subcontractors were pleasant, considerate and meticulous in what they brought to the project. We would definitely recommend Bielefeld Construction and use them again if the need arises. 5 star organization!"
Finished Fireplace Facade
Kitchen After
Kitchen After
ADA Shower Area
Before fireplace facade

+54

Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Deleon E Hijo Construction
Deleon E Hijo Construction
5.0(
7
)
Basement - Remodel

Serving Petaluma, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Offers commercial services

"Joe, Abel, and Crew did an awesome job building our 28’x8’ Timbertech deck, 25’ elevated on a hillside. Joe worked closely with the Mill Valley permitting office to get the engineering plans approved, and once we got the green light the deck shot right up! We’re extremely happy we chose them to build the deck and would happily recommend for anyone looking at similar projects."
Apartment Remodel
Apartment Remodel
Apartment Remodel
Apartment Remodel
Apartment Remodel

+6

Response time4 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for First String Home Improvement
First String Home Improvement
5.0(
9
)
Basement - Remodel

Serving Petaluma, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"I highly recommend Skyler, he is such a professional handyman, he does the work very quickly and you can trust him. He will come in advance with professional equipment, remove the wooden floor with tools, and remove the nails exposed to the outside to avoid safety hazards. He is also very nice, cheerful and patient. It was a great experience to work with him."
Mailbox Repair
Mailbox Repair
Fence Install
Door Fix
Door Fix

+7

Response time2 hrs
Response rate95%
1 neighbors recently requested a quote
Avatar for Maldonado Jessy Construction
Maldonado Jessy Construction
4.3(
60
)
Basement - Remodel

Serving Petaluma, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Such a great team, I reached out to Maldonado Jessy Construction and was very respectful, kind and helpful for my full bathroom-remodel. We truly are thankful for him to help us with a big project and others as well. The job was done very efficiently and timely."
Maldonado Jessy Construction
Maldonado Jessy Construction
Maldonado Jessy Construction
Maldonado Jessy Construction
Maldonado Jessy Construction

+25

Recommended by96%of homeowners
Avatar for Tocchini Builders Inc.
Tocchini Builders Inc.
3.8(
135
)
Basement - Remodel

Serving Petaluma, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Leo did a great job redoing our laundry area. They did a great job and went above and beyond to meet the requirements of the job. I'd recommend Leo to anyone looking to get some home projects done."
49 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Precedent Construction
Precedent Construction
5.0(
3
)
Basement - Remodel

Serving Petaluma, CA and surrounding areas

Approved

In business since 2016

Free estimates

Customers say: Quick response

"Bob is great to work with. He communicates clearly, sets expectations for timing and costs and regularly exceeds those expectations. He is a joy to work with. I picked deck installation which he did, but he also replaced doors and windows, repaired cinderblocks, got us a new roof, and did landscaping work and other jobs at our house in Dillon Beach. I highly recommend Bob and Precedent Construction."
Mobile-home Makeover
Dillon Beach Project
Garage addition with deck
Garage addition with deck
During Construction

+49

Response time1 day
Recommended by33%of homeowners
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FAQs for basement remodeling projects in Petaluma, CA

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Petaluma, CA homeowners’ guide to basement remodelings

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