By neighborhood
Seattle DADU feasibility, neighborhood by neighborhood
Feasibility is a local question. A 4,000 sq ft lot in Wallingford and a 9,000 sq ft lot in Wedgwood are governed by the same code and reach completely different answers. These 18 profiles are measured from City of Seattle open data — lot-size distribution across every parcel, hazard layers clipped to each boundary, and canopy weighted by block group.
Easiest lot geometry
Wedgwood & View Ridge 89% of lots are 5,000 sq ft or larger, with only 6.9% mapped steep slope. See the profile →Hardest ground
Alki & Admiral 22.3% mapped steep slope and 30.1% potential landslide area — geotech first. See the profile →| Neighborhood | Parcels | Lots 5,000 sq ft+ | Steep slope | Landslide-prone | Canopy |
|---|---|---|---|---|---|
| BallardSunset Hill, Loyal Heights | 5,133 | 46% | 7.8% | 7.7% | 26.9% |
| Green LakeGreenlake, Tangletown | 4,885 | 28% | 2.7% | 0% | 25.5% |
| WallingfordTangletown, Meridian | 4,343 | 24% | 1.9% | 0% | 23.1% |
| FremontFrelard, Wallingford border | 4,979 | 30% | 3.9% | 0.1% | 26.6% |
| Greenwood & Phinney RidgePhinney Ridge, Phinney | 8,574 | 39% | 2.1% | 0% | 25.4% |
| Ravenna & BryantBryant, Hawthorne Hills | 7,789 | 47% | 3% | 0% | 30.1% |
| Wedgwood & View RidgeView Ridge, Bryant | 5,821 | 89% | 6.9% | 13.3% | 32% |
| Northgate & Maple LeafMaple Leaf, Pinehurst | 3,665 | 81% | 3.9% | 0% | 29.8% |
| MagnoliaBriarcliff, Lawtonwood | 5,245 | 77% | 13.5% | 16.2% | 33.5% |
| Queen AnneUpper Queen Anne, North Queen Anne | 8,117 | 39% | 9.7% | 14.7% | 23.6% |
| Beacon HillNorth Beacon Hill, Mid-Beacon Hill | 3,449 | 68% | 8% | 0% | 16.4% |
| Columbia CityHillman City, Brighton | 5,811 | 56% | 5.5% | 0.1% | 24.5% |
| Seward ParkLakewood, Brighton Beach | 3,246 | 76% | 7.7% | 0% | 33.5% |
| Mount BakerMt Baker, North Rainier | 2,360 | 50% | 9.5% | 13.4% | 31.5% |
| West Seattle JunctionThe Junction, Genesee Hill | 6,797 | 67% | 7.5% | 4.4% | 24.6% |
| Alki & AdmiralAdmiral, North Admiral | 3,862 | 57% | 22.3% | 30.1% | 24.9% |
| Fauntleroy & SeaviewSeaview, Endolyne | 5,788 | 72% | 13.7% | 20.6% | 33.7% |
| Highland ParkRiverview, South Delridge | 2,256 | 68% | 14.7% | 13.9% | 31.6% |
Sources: Seattle Community Reporting Area boundaries and ACS housing data; King County parcels via Seattle's ADUniverse dataset; Environmentally Critical Areas (SMC 25.09) clipped to each boundary; 2021 tree canopy by census block group. Figures describe the neighborhood as a whole and are not a determination about any individual property.
Every area here is inside Seattle, because that is the only city this engine can measure — City of Seattle SDCI, SPU and Fire Department records plus King County Assessor and Recorder filings, for a parcel inside the city limits. See where the service area stops, city by city across King County →
What the slope and canopy columns mean once you apply: when critical-area review removes the fast permit path, and how a Tier 2 tree decides where the cottage can sit. The numbers a designer needs first are in the setback guide.
Next step
Your lot, not your neighborhood.
These profiles tell you what to expect. The customized feasibility report measures your specific address — setbacks, FAR headroom, tree tiers, critical areas, utilities, and a permit path — reviewed by a person. Prefer to self-study? The Pro Guide walks the full review.