Issaquah residential zoning
Issaquah residential zoning and setbacks
Issaquah's base residential table is only the first layer. Middle housing, critical areas, trees, drainage, and subarea plans can change what the parcel can actually support.
On this page4 sections
Official starting point: Issaquah residential standards. Verify the parcel zone, current code, and every applicable footnote before fixing the design.
Issaquah residential zoning by zone
| Zone | Minimum lot | Front / street | Rear | Side / interior | Height | Size limits |
|---|---|---|---|---|---|---|
| CRES / C-Res | 217,800 sq ft | 75 ft | 75 ft | 75 ft | 30 ft | 10% impervious |
| SFE / SF-E | 35,000 sq ft | 30 ft | 30 ft | 15 ft | 30 ft | 30% impervious |
| SFS / SF-S | 9,600 sq ft | 20 ft | 10 ft | 8 ft | 30 ft | 40% impervious |
| SFSL / SF-SL | 6,000 sq ft | 10 ft | 20 ft | 6 ft | 30 ft | 50% impervious |
| SFD / SF-D | 6,000 sq ft | 10 ft | 10 ft | 6 ft | 25 ft or two stories, whichever is lower | 50% impervious |
Other rules to check
Other rules that can change the answer
These items link to the city rules behind the guide. They are useful starting points, but they do not replace a property-specific review or a search for private covenants and easements.
| Topic | What it means | Official source |
|---|---|---|
| FAR | The base detached-home zones do not use one residential FAR. FAR applies in other subareas and project types and is not imported into this screen. | Issaquah LUC 18.404 ↗ |
| Setbacks | C-Res and SF-E through SF-D use different front, side, and rear yards; middle housing, access, corner, and critical-area conditions can change them. | Issaquah LUC 18.404 ↗ |
| Lot coverage | The base table does not publish a separate building-footprint percentage for these zones, so the engine does not invent one. | Issaquah LUC 18.404 ↗ |
| Impervious / hard surface | Maximum impervious surface is 10% in C-Res, 30% in SF-E, 40% in SF-S, and 50% in SF-SL/SF-D. | Issaquah LUC 18.404 ↗ |
| Height | Most base single-family zones are 30 ft; SF-D is 25 ft or two stories, whichever is lower. Grade uses average existing or finished grade, whichever is lower. | Issaquah LUC 18.404 ↗ |
| Trees | A project-specific tree plan applies current retention, canopy, replacement, and protection rules; critical-area trees are reviewed separately. | Issaquah LUC 18.812 ↗ |
| Existing private views | No general private-building-view right was identified. Public scenic-corridor and critical-area rules are not a private sightline guarantee. | Issaquah LUC 18.404 ↗ |
| Wetlands, slopes, and critical areas | Issaquah's base setbacks and impervious percentages do not include a surveyed critical-area envelope. Wetlands, fish and wildlife habitat, steep slopes, and landslide hazards have separate buffers, and a 15-foot building setback generally starts outside the applicable buffer. Do not place the house by subtracting one generic buffer from a map. Issaquah requires field and professional confirmation of wetlands and hazards, then applies the correct buffer and building setback to the surveyed site plan. | Issaquah LUC 18.802 critical areas ↗ |
Property-specific checks
What can change the table
- These base detached-home zones do not use one residential FAR, so the feasibility engine does not invent a floor-area limit.
- Height uses average existing or finished grade, whichever is lower; SF-D is limited to 25 ft or two stories, whichever is lower.
- Tree-retention, canopy, replacement, impervious-surface, critical-area, and middle-housing rules need project-specific plans.
How to use this guide
How to use the zoning table for a real property
- 1
Find the parcel on the city's current zoning map and copy the complete zone name.
- 2
Read the full row, table footnotes, and definitions. Do not use only the front setback.
- 3
Check corner-lot yards, access easements, critical areas, shorelines, trees, overlays, and recorded restrictions.
- 4
Use a boundary and topographic survey to place the setbacks against the actual lot.
- 5
Have the city or project team confirm any uncertainty before the design is fixed.
Official resources