Custom Home Builder Seattle. Built right, end to end.

Every MNBE project is bid as a fixed-price contract after one free site visit and a design consultation. We don't publish per-square-foot pricing because every Seattle and Eastside lot has its own variables: soil, slope, setbacks, utility tie-ins, design ambition, and what we discover behind walls in older homes. The few projects that match an averaged number end up nothing like the one we'd actually quote you. Honest version: tell us your scope, we'll walk your lot, and we'll come back with a written bid you can compare line by line against any other contractor.

We handle everything. MNBE is a full design-build general contractor, which means architectural drawings, structural engineering coordination, energy code compliance, city submittals, plan-check responses, and construction are all under one contract. You sign one agreement, you call one phone number, and the same person who approves your scope is the one supervising the framing crew. That's the model.

HB 1337, which took effect in 2024, expanded ADU rights statewide. In nearly every single-family-zoned property across King, Snohomish, and Pierce County, you can now build at least two ADUs (one attached and one detached, or two attached). Owner-occupancy requirements are gone in most cities. Setbacks were reduced. Off-street parking requirements were eliminated within a half mile of frequent transit. We walk every prospective client through what HB 1337 specifically allows on their lot during the consultation. Every property is different.

We work across King, Snohomish, and Pierce County. Our most active service areas include Seattle (Magnolia, Queen Anne, Ballard, Green Lake, Wallingford, Capitol Hill, West Seattle), the Eastside (Bellevue, Kirkland, Redmond, Mercer Island, Medina, Sammamish, Issaquah, Bothell), and the corridor north and south (Shoreline, Edmonds, Lynnwood, Renton, Federal Way, Tacoma). If your property is in the greater Puget Sound metro, we likely serve it. Call us and we'll confirm.

Yes. MNBE Construction & Development holds active Washington State Contractor License #MNBECCD770R9, $1,000,000 general liability insurance, and the required state surety bond. Our BuildZoom score is 94, placing us in the top 24 percent of Washington general contractors, and our HomeAdvisor rating is a verified 5.0 stars. You can verify any of this directly with L&I, BuildZoom, or HomeAdvisor before signing anything.