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Find Basement remodelers in Rohnert Park

Avatar for Bielefield Construction, Inc.
Bielefield Construction, Inc.
4.9(
8
)

Serving Rohnert Park, 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 D I Y Design & Consulting
D I Y Design & Consulting
4.9(
7
)

Serving Rohnert Park, CA and surrounding areas

Approved

In business since 1990

Free estimates

Offers commercial services

"I am very pleased with my new shower. Marc kept me informed of the entire project. His crew was always on time, hard workers and kept the work area clean."
Response time1 day
Response rate92%
4 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
19
)

Serving Rohnert Park, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"Juanpablo H. & Alex C. provided excellent service. Their knowledge and transparency gave me all the confidence that they?re the best persons for the job. Transparency is a major trust driver for me, and their ability to have frank and informative discussion earned my loyalty. Thank you both!"
Basement
Basement
Basement
Basement
Foundation

+16

177 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for Tocchini Builders Inc.
Tocchini Builders Inc.
3.7(
130
)

Serving Rohnert Park, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"The owner is very nice and accommodating to any issues that may arise. Some of his workers were not good at paying attention to detail with painting. He has told us he fired them and brought in someone new. Good replacement yet noticed areas downstairs that I need to touch up that were not coated properly. Definitely less expensive than other quotes I received. Thank for the hard work."
Recommended by93%of homeowners
Avatar for First String Home Improvement
First String Home Improvement
5.0(
9
)

Serving Rohnert Park, 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
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FAQs for basement remodeling projects in Rohnert Park, 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 Rohnert Park, CA homeowners’ guide to basement remodelings

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