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Find Basement remodelers in Black Diamond

Avatar for A TO Z HOME REMODELING LLC
A TO Z HOME REMODELING LLC
5.0(
31
)
Basement - Remodel

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

1 neighbors recently requested a quote
Recommended by9%of homeowners
Avatar for A TO Z HOME REMODELING LLC
A TO Z HOME REMODELING LLC
5.0(
30
)
Basement - Remodel

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

"A to Z Home Remodeling helped us with bathroom remodeling and the result made a huge difference in our daily routine. The old bathroom had very little storage and always felt uncomfortable to use. Their team gave us practical ideas that made the space feel bigger without making the project complicated. They were respectful, steady and easy to communicate with from start to finish. I appreciated how they checked in before making important decisions. The finished bathroom looks neat, feels more open and works much better for our family. It was a very positive experience and I am glad we chose them."
My jobs
My jobs
My jobs
My jobs
My jobs

+7

Response time12 hrs
Response rate99%
13 neighbors recently requested a quote
Avatar for Be Home Remodeling
Be Home Remodeling
4.6(
83
)
Basement - Remodel

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"I called this company to get a quote for a bathroom remodel. Ben was scheduled to come on site and give me a quote. I felt very comfortable with the quote and Ben. They did a great job on my bathroom finishes and plans a head. I even remodel my kitchen afterwards with them, Ben is very professional and responsive who made this process very easy. I defiantly going to use them again in the future."
Response time9 hrs
Response rate100%
570 neighbors recently requested a quote
Avatar for Northwest Builders & Renovation, Inc.
Northwest Builders & Renovation, Inc.
4.6(
80
)
Basement - Remodel

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%
66 neighbors recently requested a quote
Avatar for Iconiq Construction, LLC
Iconiq Construction, LLC
4.9(
31
)
Basement - Remodel

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"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%
5 neighbors recently requested a quote
Avatar for BZR Remodeling
BZR Remodeling
5.0(
5
)
Basement - Remodel

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"I strongly recommend Bzr. We found them on Houzz. We started with a kitchen remodel and felt good about moving forward with our next projects with them. We then started our bathrooms. Sean and his crew did an amazing job. They were very respectful about our place, patched up and protect our home. Sean was very helpful with choosing and delivering materials. Overall we had an outstanding experience with them. Gaby was also such a pleasure to work with. Without a doubt we would hire them again."
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

7 neighbors recently requested a quote
Avatar for NINAVA CO
NINAVA CO
4.9(
8
)
Basement - Remodel

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.

1 neighbors recently requested a quote
Recommended by50%of homeowners
NWPM Construction LLC
4.6(
18
)
Basement - Remodel

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

5 neighbors recently requested a quote
Recommended by86%of homeowners
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Showing 1-10 of 251
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.