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Find Basement remodelers in Black Diamond

Avatar for BB-Builders-Pro LLC
BB-Builders-Pro LLC
5.0(
37
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2000

Free estimates

Credit card accepted

"Our two bathrooms were remodeled by BB Builders Pro, who worked carefully with us and went above and beyond to ensure our satisfaction. Highly recommend them for any remodeling services!"
design rendering
design rendering
design rendering
design rendering
Approved floor plan

+50

Response time9 hrs
Response rate99%
123 neighbors recently requested a quote
Avatar for Iconiq Construction, LLC
Iconiq Construction, LLC
5.0(
18
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2023

Free estimates

Offers commercial services

"I am extremely satisfied with the work completed by Iconiq Construction. Their craftsmanship, communication, and efficiency were impressive. The project turned out even better than I had imagined. Highly recommend their service to everyone."
kitchen remodel
Kitchen remodel
addition project
bathroom remodel
bathroom remodel

+2

Response time1 day
Response rate94%
3 neighbors recently requested a quote
Avatar for KMT Construction
KMT Construction
5.0(
16
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

In business since 2018

Free estimates

Customers say: Quick response

"We had such a wonderful experience with KMT Company From start to finish, the team was professional, polite, and extremely hardworking. They completely transformed our kitchen and made it look beautiful — even better than we imagined! The quality of their work, attention to detail, and communication were excellent. Everything was finished on time, and they kept the space clean throughout the project. We’re so happy with the results and highly recommend them to anyone looking for kitchen remodeling. "
Handymen Project
Handymen Project
Handymen Project
Kitchen and Bath Remodeling Project
Handyman Services Project

+101

Response time7 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Fusion Builders
Fusion Builders
5.0(
14
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"We have been wanting to convert our tub to a walk in shower for years. We are grateful that we found Fusion builders. Daniel the project manager and his team made such a masterpiece. All the details and our request are perfectly done. We requested for shower nische, floating vanity & mirror with lights, high tech toilet with heated seat, bidet and more. Working with them is smooth. Great craftsmanship, professionalism and communication. We will hire them again for our future home updates. Highly recommended! "
Open Concept Kitchen
BATHROOM REMODELING
bathroom remodel
BATHROOM REMODELING
Landscape in Maple Valley

+2

Response time12 hrs
Response rate89%
37 neighbors recently requested a quote
Avatar for Northwest Builders & Renovation, Inc.
Northwest Builders & Renovation, Inc.
4.7(
56
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

In business since 2015

Free estimates

Emergency services offered

"NW Builders restored water & fire damage with courtesy & commitment. kept us updated and put in a lot of effort to complete the task successfully. Thanks them For their Excellent Service"
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025

+32

Response time3 hrs
Response rate99%
67 neighbors recently requested a quote
Avatar for SmartDecks LLC
SmartDecks LLC
4.8(
36
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

In business since 1990

Free estimates

Warranties offered

"We had Plantrex do a deck resurfaced. After it was in, there was a tenant caused deck fire. Plantrex did an outstanding job on both the original resurface and on the deck repair and restoration after the fire. Cleanup, everything was great."
Patio Roof with Fireplace
Patio Roof with Fireplace
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mendez Construction 1 Inc.
Mendez Construction 1 Inc.
4.8(
5
)

Serving Black Diamond, WA and surrounding areas

Angi Approved

In business since 2020

Free estimates

Offers commercial services

"I had some projects like repair cedar boards on deck, wash desk, and sand deck. Also replace facsia on house, remove rotted 4x6 cedar functioning as a retaining wall, replace some fence posts, and tear down and remove a gazebo. Eliberto reviewed the work and gave me a detailed estimate and began work within a week. Within four days he had completed the projects. He did an excellent job working efficiently but carefully and if any issues came up(like rotting lumber beyond scope of estimate) we discussed the problems and came up with a solution and then implemented it. I will certainly be calling on him for any future work I have. It was a good experience to work with him and his crew and I highly recommend him."
Modern deck
Modern deck
Modern deck
Modern deck
Modern deck

+1

Response time5 hrs
Response rate91%
1 neighbors recently requested a quote
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Showing 1-10 of 797
FAQs for basement remodeling projects in Black Diamond, WA

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 Black Diamond, WA homeowners’ guide to basement remodelings

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