Standard plan profileA7
Flats + backyard quad
6 homes, 2 income-restricted, existing house kept
Existing house converts to 2 affordable flats, with room for 4 townhomes behind. Nothing demolished.
Urban Acupuncture modeled standard plan
Repeatable program, parcel screening, schematic placement, and economics model — not City-pre-approved construction drawings.
- Homes
- 6
- Building type
- Two flats in the retained house plus four rear townhomes
- Existing house
- Keep + convert
- Typical new footprint
- 39 × 39 ft
- New-building height
- 3 stories
- New-home bedrooms
- 3 bedrooms
Representative site plan
New: 4 homes in a 39×39 ft pack. Drawn on a typical lot — every real lot differs, so this is illustrative, not a site-specific layout.
The program
6 homes — 2 covenant flats in the converted house + 4 market townhomes in a 39x39 backyard quad.
+5 net new homes per lot, 2 income-restricted.
Workbook-baseline economics
If built and sold at today's modeled prices, this project could return $843K–$876K in gross modeled owner value before mortgage payoff and taxes.
- Gross modeled owner value
- $843K–$876K
- All-in project cost
- $2.98M
- Does it pencil?
- Tight
- What to check first
- Parcel-specific inputs
Across conservative and base selling-cost cases, before mortgage payoff and taxes.
$497K per home
A 5% market-home price drop erases the profit under conservative selling costs.
Representative workbook baseline — not adjusted for a specific parcel.
Illustrative workbook baseline — a real packet adjusts these with the parcel's own assessor, market, and rent data.
Where it fits
Mid-block neighborhood-residential lots at least 49 ft wide and 110 ft deep (5,500+ sq ft), with a modest house of roughly 1,600-3,400 sq ft sitting toward the street and a clear back yard of 55 ft or more. The owner keeps living on the property throughout.
What must be true
- A wide, deep lot with the house toward the street and a clear rear yard
- A workable two-flat conversion inside the existing house
- The affordable-alternative regulatory path remains available to the parcel
Verify before relying on it
- Existing-house floor plan, egress, and conversion feasibility
- Affordability covenant, assistance, and buyer qualification assumptions
- Trees, rear access, utilities, title, and townhome pricing
Check Flats + backyard quad at a Seattle address
Choose a parcel to open this exact model in the feasibility packet. We will test its screening match, place the program schematically, and adjust the economics with parcel data.
If the plan does not pass this parcel's screening, the packet will say so and offer other paths.
Funding and programs that may apply
Programs that may pair with this plan
Matched from plan facts only. Parcel geography, income, utility territory, and owner facts can change the final list.
Home Improvement Property Tax Exemption
King County Assessor / RCW 84.36.400
Temporary property-tax exemption on qualifying added improvement value.
Exempts added value up to 30% of original structure value
Washington HEAR Home Electrification Rebates
Washington Department of Commerce / local HEAR administrators
Point-of-sale rebates for heat pumps, heat-pump water heaters, electrical panels, and related electrification work.
Up to $14,000 / household