R25 Zone in Portland, OR
R25 zoning district rules in Portland, OR. Permitted uses, setbacks, height limits, and lot coverage requirements.
The R25 zone in Portland, OR is a residential district (Two-Family Residential). Permits up to two dwelling units per lot (duplex). Allows slightly higher density than R-1 while maintaining low-density neighborhood character. This zone requires a 10 ft front setback, 3 ft side setback, and 5 ft rear setback. Maximum building height is 35 feet (3 stories). Maximum lot coverage is 60%.
Common Permitted Uses
- Single-family homes
- Duplexes
Permits up to two dwelling units per lot (duplex). Allows slightly higher density than R-1 while maintaining low-density neighborhood character.
Setback Requirements
| Setback Type | Requirement |
|---|---|
| Front Setback | 10 feet |
| Side Setback | 3 feet |
| Rear Setback | 5 feet |
R2.5 zone: 2,500 sqft minimum lot. Higher-density single-family zone typical in inner SE Portland. Portland Zoning Code 33.110.220. Allows rowhouses and attached housing.
Height Limits
- Max Height
- 35 feet
- Max Stories
- 3
R2.5 zone. Portland Zoning Code 33.110.215. Allows 3-story attached housing.
Lot Coverage
- Max Coverage
- 60%
R2.5 zone. Portland Zoning Code 33.110.215. Higher density zone allows more site coverage.
Parking Requirements
Single-family: 1 off-street parking space per dwelling unit in R20, R10, R7 zones. No minimum parking required in R5 or R2.5 zones or within 500 ft of a frequent service transit line per Portland Zoning Code 33.266. Multi-family: No minimum parking required in RM zones per Portland's 2019 parking reforms. Multifamily projects may provide parking voluntarily. Portland eliminated parking minimums in all RM zones and most commercial zones.
Source: Portland City Code Title 33, Section 33.205 — Accessory Dwelling Units; Oregon Revised Statutes 197A.420 (HB 2001 codification). Last verified April 5, 2026. View source