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Find Basement remodelers in Costa Mesa

Skye Construction
New to Angi

Angi Approved

In business since 2006

Free estimates

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

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Avatar for WeBuild Home Efficient
WeBuild Home Efficient
5.00(
15
)

Angi Approved

In business since 2019

Free estimates

Customers say: Quick response

"Bar and the WeBuild Efficient team did a great job installing pavers on my driveway and fixing my wooden steps and garage. He was very professional and responsive. I would recommend them, highly."
10 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for A & R General Contractor, Inc.
A & R General Contractor, Inc.
New to Angi

Angi Approved

In business since 2013

Free estimates

Warranties offered

We are a family business, specializing in tiling services, hardwood flooring, and more! We have been servicing Orange County since the early 2000's. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

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Avatar for Oshri Construction
Oshri Construction
5.00(
4
)

Angi Approved

In business since 1986

Free estimates

Emergency services offered

"Asher and his team delivered the job on time and met our discussed estimates budget! They included my wife and I in the decision making process from beginning to end. They were respectful and a pleasure to work with and completely trustworthy. I would recommend them to friends and family without hesitation. -R"
2 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Bliss Walk-In Tubs
Bliss Walk-In Tubs
5.00(
1
)

In business since 2012

"Everything went well, the process was pretty smooth, very good job as well as the price. No complaints at all."
Recommended by100%of homeowners
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Studio Azule Home Improvement
New to Angi

In business since 1998

Free estimates

Studio Azule owner and contractor, Johnathan Roberson-Beery is an artisan-builder with attention to detail and excellent customer service

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Total Contour Projects, Inc.
New to Angi

General Contractor

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Burton & Clark Construction Inc.
New to Angi

In business since 2012

Free estimates

Warranties offered

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FAQs for basement remodeling projects in Costa Mesa, 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 Costa Mesa, CA homeowners’ guide to basement remodelings

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

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