Guide · Redmond · King County · Updated July 2026
How many units can you build in Redmond?
If you own or are evaluating a residential lot in Redmond, the first question is almost always the same: how many homes can legally go on it? Since Washington's HB 1110 middle-housing law took effect, the answer for most Redmond lots is now more than one. Redmond allows 6 units per lot by right citywide in Neighborhood Residential, rising to 8 with one on-site affordable unit.
Redmond at a glance: 6 units per lot by right, up to 8 with the city's bonus, plus up to 2 ADUs under HB 1337. Source: RZC 21.08.143 (Ord. 3186).
What Redmond's adopted code allows
Redmond allows 6 units per lot by right citywide in Neighborhood Residential, rising to 8 with one on-site affordable unit. This is voluntarily above the Tier 1 4/6 floor.
The details: 8 units (7 market-rate + 1 affordable) with one on-site affordable unit at or below 80% AMI — the 6-by-right is citywide and not transit-gated. These are Redmond's city-wide standards, per RZC 21.08.143 (Ord. 3186); the exact figure for a specific parcel — its zone, lot size, transit proximity, and critical areas — is what a Civexa report resolves.
What actually fits: floor area, height, and setbacks
HB 1110 and the city code set the right to a number of units; the zone's building envelope sets what physically fits. Floor-area ratio, lot coverage, height, and setbacks together decide whether those homes pencil as detached cottages, a townhouse row, or a stacked-flat building. Civexa models Redmond's base residential height at about 38 feet, which — with setbacks and floor-area limits — caps how many of those homes physically fit. Civexa computes this envelope for Redmond zone by zone, so the unit count you see is one the zoning can actually hold.
What can shrink it: critical areas
Steep slopes, wetlands, streams, and flood zones can override the unit math on a specific parcel. A lot that qualifies for the maximum on paper may be constrained once environmentally critical areas are mapped. Civexa screens FEMA flood, slope, and county critical-area layers for every Redmond address so you find this out before you make an offer, not after.
Get the exact number for your Redmond parcel
The figures above are Redmond's city-wide rules. The number that matters is the one for your address — its zone, lot size, transit proximity, and critical areas. Civexa turns that into a full feasibility report in about a minute: unit count, buildable envelope, a preliminary pro forma, utilities, and permit path.
Run a Redmond feasibility report →
Frequently asked
How many units can I build on a residential lot in Redmond?
Redmond allows 6 units per lot by right citywide in Neighborhood Residential, rising to 8 with one on-site affordable unit. That is per RZC 21.08.143 (Ord. 3186). The exact number for a specific parcel still depends on its zone, lot size, transit proximity, and critical areas — run a Civexa report for the parcel-level figure.
Can I add ADUs on top of that in Redmond?
Washington's HB 1337 allows up to two accessory dwelling units on a residential lot. In some cities they count toward the middle-housing total and in others they are separate — your Civexa report applies Redmond's specific rule.
What unlocks the maximum in Redmond?
8 units (7 market-rate + 1 affordable) with one on-site affordable unit at or below 80% AMI — the 6-by-right is citywide and not transit-gated.