Standard plan profileA6aScreening calibration pending
Square four-townhouse pack
4 homes, 3 net new, existing house replaced
Replace one existing house with four compact three-story townhomes in a 39 by 39 foot square pack.
Plan passport published; parcel matching is not active
The program, square-pack geometry, and workbook baseline are reviewable now. Frontage ROW width, arterial and narrow-ROW curb facts, rear-specific positive alley attribution, and independent calibration must finish before this plan appears in map layers, address results, recommendations, or citywide counts.
Urban Acupuncture modeled standard plan
Repeatable program, canonical geometry, schematic placement, and workbook economics — parcel screening is still in development, and these are not City-pre-approved construction drawings.
- Homes
- 4
- Building type
- Four three-story townhomes in one square pack
- Existing house
- Replace
- 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
4 homes — 4 market townhomes in a 39x39 square townhouse four-pack.
+3 net new homes per lot (market-rate).
Workbook-baseline economics
If built and sold at today's modeled prices, this project could return $522K–$546K in gross modeled owner value before mortgage payoff and taxes.
- Gross modeled owner value
- $522K–$546K
- All-in project cost
- $2.20M
- Does it pencil?
- Tight
- What to check first
- Parcel-specific inputs
Across conservative and base selling-cost cases, before mortgage payoff and taxes.
$550K 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
On a standard rectangular NR lot, the 39 by 39 foot pack generally needs at least 49 feet of lot width. A 45-foot width applies only to lots under 5,000 square feet inside the adopted frequent-transit service area. Base depth is generally 59 feet without a rear alley, 54 feet on a qualifying small frequent-transit lot, or 49 feet with a rear alley, before any narrow-right-of-way or parking depth. Exact parcel matching is not active yet; the placement engine and cohort envelope test now exist, and source-coded negative alley evidence is available, but frontage ROW width/arterial facts, narrow-ROW curbs, positive rear-alley attribution, survey, access, utilities, drainage, waste, trees, ECA, fire access, parking, and title inputs still control.
What must be true
- The adopted rules allow four attached principal homes on the lot
- The surveyed redevelopment envelope holds the complete 39 × 39 foot pack
- Entries, emergency access, utilities, drainage, waste, and any parking work as one project
Verify before relying on it
- Current land-use and building/fire-code path for the 2 × 2 party-wall form
- Surveyed setbacks, trees, critical areas, access, utilities, and title constraints
- Unit-lot subdivision or alternate tenure path, demolition cost, and local sale prices
Address checking for this plan will open after frontage ROW width, arterial and narrow-ROW curb facts, rear-specific positive alley attribution, and the independent calibration cohort pass review.
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