TownhomesModern Rowhomes
West Seattle
Duplex – Fourplex
Middle Housing
Permitting
Duplexes, triplexes, fourplexes, townhomes, and cottage clusters — the new density Washington law now requires Seattle to allow.
Middle housing is the biggest shift in Seattle residential development in a generation, and almost no permit-expediting firm has caught up. Washington's 2023 middle-housing law requires the city to allow up to four homes on most residential lots — and up to six near frequent transit or when affordable units are included. We help owners and small builders turn that new capacity into a permittable project.
What's included
- Lot capacity analysis under the new state law
- Unit lot subdivision strategy
- Typology & massing feasibility
- Shared-utility & infrastructure planning
- Full multi-unit SDCI permit package
- Corrections managed to issuance
01
What the new law unlocks on your lot
The law sets a floor, not a ceiling, and Seattle's implementation is rolling out through its zoning and comprehensive-plan updates. We assess what your specific lot allows today versus what's pending, so you plan around reality, not headlines.
- Up to 4 units on most residential lots
- Up to 6 near frequent transit or with affordable units
- Reduced parking requirements
- Current vs. pending zoning analysis
02
Lot configuration & ownership
Middle housing brings real choices: unit lot subdivision so each home can be sold separately, shared versus separate utilities, and the design standards that govern how the units sit on the lot. These decisions shape both the permit and the eventual sale or rental.
- Unit lot subdivision for fee-simple sale
- Shared vs. separate utility strategy
- Massing, setback & design standards
03
The typologies we permit
Stacked flats, attached townhomes, and detached cottage clusters each behave differently under the code. We match the typology to your lot, your budget, and your exit plan, then build the submittal around it.
Built & permitted
Density we've
permitted & built.
Townhomes, duplexes, row houses, and apartments — the middle-housing density we've designed, permitted, and built across Seattle. Open any project for the full photo set.
Real projects
Permitted &
built in Seattle.
Every home here we designed, permitted, and built ourselves — our own developments across the Seattle area under Seattle Modern Buildings. All photos and details are genuinely ours, never stock. Drag or swipe to explore.
Townhomes
New HomeSkyline Vantage
Seattle
New HomeCedar-Entry New Build
Seattle
New HomeRooftop Deck & Spa
Seattle
TownhomesInfill Townhomes
Seattle
DADUDetached Backyard Home
Seattle
ADURear Yard & Lower-Level Suite
Seattle
InteriorLight-Filled Open Kitchen
Seattle
TownhomesModern Rowhomes
West Seattle
New HomeSkyline Vantage
Seattle
New HomeCedar-Entry New Build
Seattle
New HomeRooftop Deck & Spa
Seattle
TownhomesInfill Townhomes
Seattle
DADUDetached Backyard Home
Seattle
ADURear Yard & Lower-Level Suite
Seattle
InteriorLight-Filled Open Kitchen
Seattle
Middle Housing Permitting — questions
How many units can I really build?
Most residential lots now support up to four homes, and up to six near frequent transit or with affordable units — but the exact number depends on your lot and Seattle's current implementing zoning. We give you a parcel-specific answer, not a generic one.
Can each unit be sold separately?
Often yes, through unit lot subdivision, which creates fee-simple lots for each home. We plan the subdivision alongside the building permit so your exit options stay open.
Ready to start your
Middle Housing permit?
Tell us about your lot and project. We'll map the permit path and timeline before you spend on drawings.
Start Permit Review