How much does an ADU cost in Washington State?

ADU costs in Washington State typically range from $150,000 to $400,000+ depending on size, site conditions, finish level, and local jurisdiction requirements. NBE LLC provides detailed feasibility studies with exact quotes based on your specific property.

What is HB 1337 and how does it affect ADU construction?

HB 1337 is a Washington State law that allows homeowners in most cities to build at least two ADUs on single-family lots. It relaxed parking requirements, reduced setbacks, and removed owner-occupancy mandates, making ADU construction more accessible across the Puget Sound region.

Do you offer disability home retrofit services?

Yes. NBE LLC specializes in ADA-compliant home modifications including wheelchair accessibility, roll-in showers, grab bars, wider doorways, and aging-in-place renovations. We serve homeowners across King, Pierce, and Snohomish Counties.

What areas does NBE LLC serve?

NBE LLC serves homeowners across the Greater Seattle area including Seattle, Kent, Bellevue, Renton, Tacoma, Federal Way, Auburn, Kirkland, Redmond, Issaquah, Sammamish, Mercer Island, Puyallup, Lakewood, Gig Harbor, Burien, Shoreline, Lynnwood, Edmonds, Port Orchard, and Bremerton.

How long does a typical renovation take?

Project timelines vary by scope: kitchen remodels typically take 6-10 weeks, bathroom remodels 4-8 weeks, home additions 3-6 months, and custom ADU builds 4-8 months. NBE LLC provides detailed timelines during our feasibility study phase.

Custom Homes, ADUs & Major Renovations Serving The Greater Seattle Area

From the Eastside to the Sound. Delivering high-end craftsmanship for Custom Builds, Full Home Remodels, and Major Additions across Washington.

Proudly serving Seattle, Bellevue, Kent, Renton, and surrounding areas.

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Modern backyard ADU cottage with cedar siding and large windows in Seattle

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+ Years

of Construction Expertise

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With years of experience, we are proud members of the MBA, dedicated to delivering quality and excellence in construction

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Our clients consistently rate us 5 stars for delivering successful project outcomes

Daily Progress

Real, unedited updates sent straight from our active crews across the Greater Seattle Area.

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Bathrooms

Build Update 02

Bathrooms

Build Update 01

June 8, 2026 5:00 PM

ADU / DADU

1Kitchen Demolition in Mercer Island1

NBE LLC — a leading General Contracting Company headquartered in Kent, Washington

What We Do

We have refined a step-by-step process that makes remodeling easy and stress-free

Integrated Development Services

Pre-Construction & Entitlement

Zoning analysis, permit expediting, and feasibility studies.

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ADUs & New Construction

Detached cottages, custom homes, and ground-up builds.

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Major Renovations & Additions

Second-story additions, structural rehabilitations, and luxury modernizations.

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We Work With

Trusted by homeowners, business owners, and industry professionals across the Greater Seattle Area.

PRIVATE HOMEOWNERS

"The NBE team was fantastic. We just completed a full home remodel, upgrading our 90s build to a beautiful modern look. They were efficient, provided valuable suggestions along the way, and were quick with their communication."

Darren Kwan

Homeowner

BUSINESS OWNERS

"We had an amazing experience constructing our juice bar. Their professionalism and attention to detail were exceptional. They transformed our ideas into a stunning reality, and the craftsmanship resulted in a sleek design that perfectly fit my vision."

Tiffany Bobbsemple

Business Owner

INDUSTRY PARTNERS

"From the initial consultation to the final inspection, Northwest Building Endeavors exceeded our expectations. Their professionalism and commitment to quality craftsmanship were evident throughout the entire project."

Richard Mackie

Development Partner

REAL ESTATE INVESTORS

"Managing multiple properties is effortless with NBE. Their in-depth market knowledge and seamless execution allow us to maximize returns while minimizing risks. They handle every detail so we can focus on growing our portfolio."

Melanie Hawkins

Real Estate Investor