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Find Basement remodelers in Black Diamond

Avatar for Puget Sound Builders & Renovation
Puget Sound Builders & Renovation
5.0(
92
)

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2006

Credit card accepted

Customers say: True professional

"We had our basement remodeled, and the results exceeded expectations. The team was respectful, clean, and very skilled. Puget Sound turned an unused space into something beautiful."
Bathroom Renovation
Basement Remodel
Bathroom Renovation
Basement Remodel
Kitchen Remodeling

+23

144 neighbors recently requested a quote
Recommended by1%of homeowners
Avatar for Be Home Remodeling
Be Home Remodeling
4.7(
79
)

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"Renovations have never appealed to me, but this team made it easy. In addition to being gorgeous, my new kitchen is also practical. Their communication and attention to detail were excellent."
Response time9 hrs
Response rate99%
563 neighbors recently requested a quote
Avatar for Northwest Builders & Renovation, Inc.
Northwest Builders & Renovation, Inc.
4.6(
79
)

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"North West Builders and Renovation helped turned my Kitchen into the dream kitchen I have always wanted. They were quick to answer, listened and helped me with everything. They did the clearing out of the old cupboards and flooring and used my idea to give our family a masterpiece. I recommend them for any renovations, they did an excellent job."
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025

+32

Response time3 hrs
Response rate99%
46 neighbors recently requested a quote
Avatar for Iconiq Construction, LLC
Iconiq Construction, LLC
4.9(
31
)

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Offers commercial services

"I hired Iconiq Construction Service for my kitchen remodel, and they did a fantastic job. The team was professional, friendly, and finished on time. I love my new modern kitchen!"
kitchen remodel
Kitchen remodel
addition project
bathroom remodel
bathroom remodel

+2

Response time1 day
Response rate94%
3 neighbors recently requested a quote
Avatar for BZR Remodeling
BZR Remodeling
5.0(
4
)

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"If your'e looking for trustworthy and stress free remodel, these are your guys. My wife and I were away for almost the entire project. Sean managed it wonderfully. He updated us every step of the way. Crew was great and respectful towards our home and neighbors. They did our master bathroom and hopefully we can start working on ideas for our guest bathroom. Excellent job BZR if i could give more than a 5 star I would."
Everett, Wa- Full Bathroom
Snohomish, Wa- Kitchen
Woodinville, Wa- Full Bathroom
Federal Way, Wa- Patio Renovation from old deck to stone walkways, retaining walls and pavers.
University Dr, Wa.- Kitchen

+7

10 neighbors recently requested a quote
NWPM Construction LLC
4.5(
17
)

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Customers say: True professional

"NWPM was a subcontractor for a bathroom remodel. They were prompt and responsive -- they showed up when they said they would, and did good work. They installed a subfloor, vanity, toilet, shower door, and an exhaust fan with necessary conduit. I don't know about their pricing because they were a subcontractor, but I would hire them based on their responsiveness and the quality of the work performed."
Redo stairs rails with black stain
Bathroom remodel
Interior remodeling
Remodeling - Kitchen & Bathroom Project
In the process of applying stain.

+30

4 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for NINAVA CO
NINAVA CO
5.0(
4
)

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2024

Credit card accepted

Offers commercial services

NINAVA CO, with 20+, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Recommended by100%of homeowners
Avatar for RT Signature Homes Design & Build, LLC
RT Signature Homes Design & Build, LLC
5.0(
5
)

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

RT Signature Homes Design & Build, LLC, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. \n\nTel. (206) 407-6291\n(Mon - Fri) 9:00am - 6:30pm

Bathroom Remodel
Full kitchen remodel
Full kitchen remodel
Full kitchen remodel
Full kitchen remodel

+30

1 neighbors recently requested a quote
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Showing 1-10 of 250
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.