ADU Zoning Rules for Every City

Max size: Not established — no ADU ordinance exists; confirm with Birmingham Planning Division · Setbacks: Underlying district accessory-structure setbacks apply; ADU-specific standards do not exist yet — confirm with Birmingham Planning Division

Max size: N/A — detached ADUs prohibited (Sec. 73.5; Sec. 10.6.3 bans kitchens in detached accessory structures) · Setbacks: N/A for ADUs — rear dwellings prohibited

Max size: 1,000 sq ft gross floor area or 50% of the principal structure's floor area, whichever is less (Sec. 64-4-2.B.3(a)) · Setbacks: Same as underlying zoning district rear-yard setback, or Historic District Overlay if applicable (Sec. 64-4-2.B.4(a)) — confirm district value with Mobile Planning & Zoning

Max size: 1,000 sq ft on lots up to 10,000 sq ft (75% of primary dwelling, whichever is less); on lots over 10,000 sq ft, the lesser of 3,000 sq ft or 10% of net lot area · Setbacks: 5 feet (3 ft for some detached configurations per ZO 706; statute caps rear/side at 5 ft)

Max size: 75% of primary dwelling, up to 1,000 sq ft (minimum 650 sq ft guaranteed) · Setbacks: 5 feet (limited to 5 ft from property line per HB 2720)

Max size: 1,000 sq ft or 75% of primary dwelling (whichever is less); 500 sq ft for second/third ADU · Setbacks: 5 feet (detached ADU may be as close as 5 ft to rear lot line)

Max size: 75% of primary residence's interior habitable area or 1,000 sq ft, whichever is less · Setbacks: 5 feet minimum for new structures; existing-structure conversions require no additional setback

Max size: 75% of the single-family dwelling's gross floor area (interior habitable area) or 1,000 sq ft, whichever is less · Setbacks: 5 feet minimum (uninhabitable space attached to an ADU, e.g. a garage, must meet full district setbacks)

Max size: 1,000 sq ft or 75% of the main dwelling's gross floor area, whichever is less · Setbacks: 5 feet minimum (all districts, unless the district allows less)

Max size: 75% of the primary residence's gross square footage (state law guarantees at least the lesser of 1,000 sq ft or 75%) · Setbacks: 5 feet maximum required (ARS 9-461.18 caps rear setbacks at 5 ft)

Max size: 1,200 sq ft · Setbacks: 4 ft for units ≤16 ft height

Max size: 850 sq ft gross floor area for a detached ADU with one bedroom or less; 1,000 sq ft for two or more bedrooms. Same cap in BOTH programs (State: PC 207.2(c)(1) and (d)(5)(B); Local: PC 207.1(c)(15)(B)). Exception: a detached ADU on a lot with an existing multifamily building under the State Program has NO maximum size. NOTE: SF measures this as GROSS FLOOR AREA, not interior livable space. · Setbacks: 4 ft is right for a NEW detached structure, but wrong as a blanket rule. State Program (PC 207.2(d)(7)): NO setback is required for an ADU within an existing living area or existing accessory structure, or one that replaces an existing structure at the same location and dimensions; a setback of no more than 4 ft applies otherwise; and for new construction the 4 ft applies only to portions outside the buildable area. Local Program: 4 ft for the detached rear-yard ADU (207.1(c)(15)(A)); but converted space needs NO setback and other Local-Program ADUs must meet the underlying zoning district rear yard (in SF RH districts typically 25% of lot depth, far more than 4 ft) unless the Zoning Administrator grants a rear-yard waiver under 207.1(g).

Max size: 1,200 sq ft · Setbacks: 4 ft

Max size: Depends on which standards track the applicant chooses. CITY Development Standards (SJMC 20.80.175): 1,000 sq ft on lots under 9,000 sq ft; 1,200 sq ft on lots over 9,000 sq ft. STATE Development Standards (SJMC 20.80.176): 800 sq ft on any lot. Minimum size 150 sq ft under either track. The tracks cannot be mixed. Same size table applies on duplex/multifamily lots under the City track. · Setbacks: CITY Development Standards, detached ADU: 0 ft for the first story, 4 ft for a second story. STATE Development Standards: 4 ft. On duplex/multifamily lots the City track is 0 ft first story / 4 ft second story detached and 0 ft attached. Conversions of existing structures have no rear setback requirement under the State track. City-track detached ADUs must also keep a minimum 6 ft separation from the main home and must not cover more than 40% of the rear yard.

Max size: Local option (17.228.105(B)): 1,200 sq ft — but this is a COMBINED cap. Two detached ADUs on one lot must together stay within 1,200 sq ft (e.g. 400 + 800). State option (17.228.105(C)): 800 sq ft for a detached new-construction ADU. MORE GENEROUS than the state floor for a single unit; the combined-cap nuance is missing from our record. · Setbacks: Local option: NO rear-yard setback required for a single-storey ADU, or the first floor of a multistorey ADU, if the whole unit is more than 60 ft from the front property line. If any part is within 60 ft of the front property line, or for the second floor and above, the minimum is the zone's rear-yard setback or 3 ft, whichever is LESS. No setback at all for an existing structure converted to an ADU. State option: 4 ft. MORE GENEROUS than we say. Local overrides: no ADU may project into the levee setback (20 ft from the landside toe for development under 5 acres, 17.204.240(E)); and no balcony/deck/open-stair landing within 10 ft of the rear lot line may sit more than 3 ft above ground unless that line abuts an alley, street or non-residential use.

Max size: 850 sq ft for a studio or 1-bedroom; 1,000 sq ft for 2 bedrooms or more (detached Category 2 ADU). The 1,200 sq ft figure does NOT apply to detached units - it is only the cap on the 50%-of-primary-dwelling option for ATTACHED ADUs and on Category 1 conversions. Our current value overstates the detached allowance by 200-350 sq ft. · Setbacks: 4 ft, OR the underlying zone's regularly required rear setback if that is less - but never less than 3 ft from the rear lot line. So Oakland can go tighter than the state's 4 ft floor where the base zone permits. Note that the separate lot-coverage/FAR protection clause is expressed at 'at least 4 foot side and rear yard setbacks', so an ADU relying on that protection should plan on 4 ft. Category 1 conversions/JADUs: no ADU setback applies (existing nonconforming envelopes are allowed).

Max size: 800 sq ft (detached new construction, single-family lot). STRICTER than the 850/1,000 sq ft floor in Gov. Code 66321(b)(2) — flag as arguably preempted, but this is the city's published operative limit. City's stated basis is Gov. Code 66323(a)(2)(A), the by-right pathway, which Long Beach administers because it has no local ADU ordinance. On multi-family lots the city imposes NO size limit on detached ADUs. · Setbacks: 4 ft for new construction — ADOPTS the state minimum on its face, but with a Long Beach measurement rule that is effectively MORE GENEROUS: 'The rear setback shall be measured to centerline of adjacent alley where such exists.' On Long Beach's many alley-served lots this lets the structure sit substantially closer to the rear property line than a naive 4 ft reading suggests. Conversions maintain the existing setback, subject to fire and life safety.

Max size: The greater of 1,400 sq ft or 50% of the average floor area of the primary unit(s). No separate detached cap. · Setbacks: The underlying base district's rear setback or 4 ft, whichever is LESS. Zero feet on lots abutting an alley (2 ft if the ADU's main entrance faces the alley). Where a recorded utility easement exists, the setback must include the easement.

Max size: 1,000 sq ft — but capped at 800 sq ft if you build BOTH an ADU and a JADU on the same lot. Conversions of an existing accessory structure or part of the primary residence are not subject to any size limit. · Setbacks: 4 ft — ADOPTS THE STATE MINIMUM, so our value is right by adoption, not coincidence. Add: no setback is required where the ADU is rebuilt in the same location and to the same dimensions as a demolished structure that already encroached; conversions are exempt from setbacks entirely.

Max size: 1,200 sq ft headline cap, but expressly 'subject to 18.04.080.020', which caps the cumulative floor area of ALL enclosed detached accessory structures at the underlying zone's minimum livable floor area (1,700 sq ft in RH-1, RH-2, RH-3 and RS-1; 1,225 sq ft in RS-2, RS-3, RS-4) and further provides it 'shall not exceed the square footage of the main dwelling'. So on a modest primary home the detached ADU is limited to the size of that home. State law still guarantees at least 800 sq ft regardless. · Setbacks: 4 ft (unchanged, and correct — Anaheim adopts the state minimum verbatim in Table 38-A). Worth adding: conversions of legally permitted existing structures are exempt from structural setbacks entirely, and a legally established accessory structure may be demolished and rebuilt as an ADU in the same location and dimension without additional setbacks. Eaves/roof overhang must stay at least 12 inches from the property line.

Max size: 850 sq ft (studio/1-bedroom); 1,000 sq ft (2+ bedrooms) — per Ontario ADU Handout (Rev. 01.21.2025) · Setbacks: 4 ft minimum

Max size: 1,200 sq ft (at least 850 sq ft is guaranteed regardless of lot-coverage standards) · Setbacks: 4 ft maximum (detached new construction)

Max size: 1200 sq ft; reduces to 800 sq ft if lot coverage exceeded · Setbacks: 4 ft minimum (detached new construction)

Max size: 1200 sq ft · Setbacks: 4 ft minimum (detached new construction)

Max size: 1200 sq ft · Setbacks: 4 ft minimum (detached new construction)

Max size: 1,200 sq ft (new construction on single-family lots); limited to 1,000 sq ft in most Hillside Overlay districts · Setbacks: 4 ft for new construction; none for conversions of existing structures

Max size: 1,200 sq ft outside the Hillside Overlay; 850 sq ft (studio/1-bedroom) or 1,000 sq ft (2+ bedrooms) within the Hillside Overlay · Setbacks: 4 ft minimum

Max size: 850 sq ft (studio/1-bedroom) or 1,200 sq ft (2+ bedrooms) · Setbacks: 4 ft; none for conversions of existing structures (including pre-Jan 1, 2020 unpermitted structures being legalized)

Max size: 850 sq ft for a 1-bedroom ADU; 1,000 sq ft for a 2-bedroom ADU, regardless of underlying zoning standards (units over 850 sq ft must add a second bedroom) · Setbacks: 4 ft maximum required for detached new-construction ADUs; none for conversions of existing structures

Max size: Up to 1,200 sq ft; 800 sq ft ADU must be allowed on virtually any lot. HCD struck Irvine's lot-size-based ADU size caps · Setbacks: 4 ft maximum required (state law); none for conversions of existing space

Max size: Up to 1,200 sq ft; 800 sq ft unit must be allowed on virtually any lot (state law) · Setbacks: No more than 4 ft (state law); none for conversions of legally established existing space

Max size: 1,200 sq ft · Setbacks: 4 ft minimum

Max size: 1,200 sq ft (subject to zone lot coverage above the 850/1,000 sq ft state-guaranteed unit) · Setbacks: 4 ft minimum

Max size: 850 sq ft (studio/1BR) to 1,000 sq ft (2BR+) per city handout, based on lot FAR/coverage; some builder sources report 1,200 sq ft — confirm with Escondido Planning (760-839-4671) · Setbacks: 4 ft minimum

Max size: 1,200 sq ft of habitable space; ordinance also said the ADU may not exceed the primary dwelling's size — a provision HCD flagged as noncompliant, so confirm with Community Development · Setbacks: 4 ft minimum (3 ft allowed at 12 ft height; 5 ft required for 20 ft height)

Max size: 850 sq ft (studio/1-bedroom); 1,000 sq ft (2+ bedrooms); 800 sq ft in Mountain Fire Zone or front-setback locations; +120 sq ft bonus for each extra code-compliant parking space (deed-restricted) · Setbacks: 4 ft

Max size: 1,000 sq ft (800 sq ft under the state-exempt ministerial path); accessory-structure conversions exempt from the cap · Setbacks: 4 ft (detached); same as primary dwelling for attached; none for conversions of existing structures

Max size: 1,200 sq ft (subject to zone lot-coverage limits, but an 800 sq ft/16-ft ADU can never be prohibited); conversions of existing space exempt · Setbacks: 4 ft maximum required, including lot lines adjacent to streets; none for conversions or same-footprint rebuilds

Max size: 850 sq ft (studio/1-bedroom); 1,000 sq ft (2+ bedrooms); an 800 sq ft ADU can never be precluded by lot coverage, FAR, or open-space standards · Setbacks: 4 ft minimum; none for same-location/same-dimension rebuilds

Max size: 1,200 sq ft · Setbacks: 4 ft for new construction; none for conversions of existing structures

Max size: 1,200 sq ft maximum (850 sq ft studio/1BR and 1,000 sq ft 2+BR guaranteed; larger units capped at 50% of primary dwelling floor area or 1,200 sq ft, whichever is less) · Setbacks: 4 ft for new construction; none for conversions of existing permitted structures

Max size: Up to the FAR of the underlying zone and no larger than the primary unit; 800 sq ft is always allowed (ADU area up to 800 sq ft is FAR-exempt) · Setbacks: 4 ft; none for conversions of existing space

Max size: 1,200 sq ft · Setbacks: 4 ft for new construction; none for conversions or same-footprint rebuilds

Max size: 850 sq ft (studio/1BR) or 1,000 sq ft (2+BR) per city handout — the state floor; minimum 150 sq ft · Setbacks: 4 ft for new construction; none for conversions of existing structures (including same-footprint rebuilds)

Max size: 850 sq ft (1 bedroom or fewer) or 1,000 sq ft (2+ bedrooms); an 800 sq ft ADU with 4-ft setbacks can never be precluded; minimum 150 sq ft · Setbacks: 4 ft; none for conversions of existing structures

Max size: 1,200 sq ft · Setbacks: 4 feet

Max size: Up to 1,000 sq ft on lots over 7,000 sq ft (864 sq ft on 6,000-7,000 sq ft lots; ~650 sq ft on smaller lots) — varies by zone district · Setbacks: Must be within rear 35% of lot; 5 ft minimum rear setback

Max size: 50% of principal dwelling or 1,250 sq ft (whichever is less); 750 sq ft max if principal < 1,500 sq ft · Setbacks: 12 feet

Max size: 800 sq ft (market-rate); up to 1,000 sq ft (affordable ADU program) · Setbacks: Confirm with Boulder Planning (reduced rear setbacks ~3 ft apply to market-rate detached ADUs near alleys)

Max size: Larger of 450 sq ft or 30% of the required rear yard (detached accessory building footprint) · Setbacks: Minimum 12 ft from the alley centerline (DCMR Subtitle D 5004.1)

Max size: City of Miami: confirm current cap with City of Miami Planning (proposed ~500 sq ft / 10% of lot, capped at 800 sq ft). Unincorporated Miami-Dade: 400-800 sq ft in RU-1 districts (varies by district) · Setbacks: 5 ft (RU-1 district)

Max size: 950 sq ft (larger setbacks apply when the ADU exceeds 15% of lot size) · Setbacks: 3 ft (20 ft when the ADU exceeds 15% of lot size)

Max size: 1,000 sq ft max, 500 sq ft min; must be smaller than the principal structure (varies by sector) · Setbacks: 15 feet

Max size: 25% of primary residence or 750 sq ft (whichever is smaller) · Setbacks: 20 feet

Max size: 750 sq ft (allowed by-right in R-4, R-4A, R-5 zones) · Setbacks: 4-15 ft (varies by zone: 4 ft in R-5; 15 ft in R-4/R-4A)

Max size: 40% of the principal building's footprint, capped at 700 sq ft / 1 bedroom in most districts (1,000 sq ft / 2 bedrooms in A-1, RSF-E, RSF-20, RSF-30); 400 sq ft minimum (May 2023 amendment) · Setbacks: 4 feet (detached accessory; Confirm with Savannah Planning for your zone)

Max size: 500 sq ft (lots under 5,000 sq ft); 1,000 sq ft (lots 5,000 sq ft and larger) — updated by Ordinance 25-2 · Setbacks: Standard building code requirements

Max size: Detached coach houses governed by bulk/setback standards rather than a flat sq-ft cap (limited to 60% of the required rear setback area); Confirm buildable size with Chicago Dept. of Housing for your lot · Setbacks: Detached ADU must sit within the rear 50% of the lot; Confirm with Chicago Dept. of Housing

Max size: 1,000 sq ft · Setbacks: 12 feet

Max size: Not as-of-right — ZBA variance required (by-right only in Mattapan) · Setbacks: 20 feet (applies to variance/Mattapan detached units)

Max size: 900 sq ft or 50% of primary dwelling, whichever is less (MA state by-right cap) · Setbacks: 5 ft base (ADU setbacks may not be stricter than principal/accessory standards under 760 CMR 71.03)

Max size: 900 sq ft by-right (larger is possible via Planning Board special permit) · Setbacks: 5 ft via the accessory-structure standard (R districts)

Max size: Local backyard cottage: 576 sq ft max floor plate, max massing 24 ft wide x 32 ft deep; state protected-use ADU: up to 900 sq ft or 50% of principal dwelling GFA, whichever is smaller (reasonable local dimensional standards still apply) · Setbacks: 3 ft minimum (3 or 20 ft where lot abuts an alley); 10 ft minimum separation from the principal building

Max size: 900 sq ft or 50% of the principal structure's gross floor area (per 760 CMR 71.02), whichever is less; minimum 320 sq ft for a detached ADU · Setbacks: Detached ADUs must meet the principal-structure yard setbacks in QZO Table 4.1 — varies by district; Confirm with Quincy Inspectional Services

Max size: 1,000 sq ft or 50% of the main building by right; 1,200 sq ft in an existing garage or if the owner occupies the site; up to 1,500 sq ft by special permit · Setbacks: 5 ft for a 1.5-story/22-ft detached ADU; standard principal-dwelling setbacks for taller units

Max size: 600 sq ft on lots up to 7,199 sq ft; 800 sq ft on lots 7,200 sq ft or larger — or the ground-floor area of the main dwelling, whichever is less · Setbacks: Allowed in the rear setback area if at least 3 ft from any lot line and all structures cover no more than 35% of the rear setback area; fire-rated walls required if 3-5 ft from a lot line

Max size: 850 sq ft maximum and no more than 40% of the main house's gross floor area (ordinance §5.9.03 allows at least 400 sq ft in any case); greenspace requirements (30-60% depending on zone) can further limit buildable size · Setbacks: Detached ADU must be at least 3 ft from the rear lot line (special Building Code requirements if a wall is within 5 ft of the property line)

Max size: Proposed: no more than the smaller of 1,200 sq ft or 60% of the principal dwelling's gross floor area (Sec. 50-12-466); not yet in effect · Setbacks: Proposed: standard 3 ft accessory-structure rear setback, with no rear setback required where the lot abuts an alley; existing accessory structures converted to ADUs may keep their footprint

Max size: 1,300 sq ft or 16% of lot area (whichever greater); max 1,600 sq ft or size of primary dwelling (whichever less) · Setbacks: 3 ft (5 ft from alleys for above-garage ADUs)

Max size: 800 sq ft or 75% of the principal dwelling floor area (whichever is greater) · Setbacks: 3 ft from interior lot lines

Max size: 800 sq ft floor area max; footprint also capped at 60% of the main home's footprint or 25% of the rear yard, whichever is smaller · Setbacks: 5 feet from all property lines (including projections)

Max size: Amended by Ordinance 6963 (July 2026) - codified text pending; the pre-2026 rule capped all accessory structures at 50% of the principal dwelling's floor area · Setbacks: 3 feet minimum for detached accessory structures, plus 6-ft separation from the main dwelling; no setback required from a property line abutting an alley

Max size: the greater of 25% of the principal dwelling's floor area or 1,000 sq ft — a guaranteed minimum, not a cap (Sec. 19.9.4.B.6.b.ii). Tiny-house ADUs max 400 sq ft excluding lofts; an attached garage doesn't count toward ADU size · Setbacks: 5 ft for a detached ADU 14 ft or less in height; taller ADUs must meet the main house's rear setback (RS-1/RS-2: 25 ft; RS-4/RS-6/RS-8: 15 ft). Detached ADUs need 6 ft of separation from other buildings, or a connecting roof.

Max size: No square-footage cap — size is limited by the 18 ft/2-story height limit, setbacks and lot coverage (R-1: maximum lot coverage increases by an additional 5% for an ADU; R-2: 80% lot coverage; RH-1: 75% lot / 55% building coverage; RH-2: 75% lot coverage) · Setbacks: R-1: 2 ft (per building code); R-2: 3 ft; RH-1 and RH-2: none

Max size: 800 sq ft or 25% of the principal dwelling's total floor area, whichever is greater; +5% total floor area if the ADU is fully accessible under NJ's Barrier Free subcode; 1,000 sq ft or 30% if deed-restricted to low/moderate-income occupancy (Ord. 2024-32) · Setbacks: Per the accessory-structure setbacks of the underlying district — confirm with the Princeton Planning Department; detached ADUs must be at least 5 ft from the habitable portion of the main house

Max size: 300-800 sq ft, and no more than 40% of the habitable area of the principal building, whichever is less; no more than 3 rooms excluding kitchen and bathroom; detached ADUs must be located in the rear yard · Setbacks: Accessory-building setbacks of the underlying zone apply — confirm with the Montclair Department of Planning & Community Development

Max size: 800 sq ft gross floor area, and in no case more than 40% of the primary dwelling's floor area (§ 315-9.4B.7-8). The footprint of a single detached accessory structure also cannot exceed the footprint of the principal building (§ 315-9.4A.5). · Setbacks: 10 ft from the rear lot line for a detached ADU (§ 315-9.4B.6)

Max size: 750 sq ft (650 sq ft and 18 ft height in the Downtown CPO-3 overlay) · Setbacks: 5 feet minimum

Max size: Up to 800 sq ft (and no more than 33% of the required rear yard) where permitted under City of Yes; not allowed in historic districts or R1-2A/R2A/R3A zones outside the Greater Transit Zone · Setbacks: N/A

Max size: 1,000 sq ft gross floor area; a detached unit must also be shorter and smaller-footprint than the principal building (Green Code UDO 6.1.2.B) · Setbacks: 15 feet

Max size: Not applicable yet - the pending Zoning Alignment Project code would newly allow ADUs (by special permit in low-density zones); no adopted dimensional standards exist · Setbacks: 15 feet

Max size: 1,000 heated sq ft, and no more than 50% of the principal dwelling's floor area (whichever is less) when in an accessory structure · Setbacks: 15 feet

Max size: 800 sq ft · Setbacks: 5 feet (rear lot line, per UDO Sec. 3.6.2; 20 ft if abutting an alley with parking, 4 ft alley without parking)

Max size: Up to 1,200 heated sq ft (UDO Sec. 5.4.2); must remain subordinate in size to the primary dwelling · Setbacks: 15 feet

Max size: 800 sq ft or 75% of primary (whichever is less) · Setbacks: 5 feet

Max size: 800 sq ft (or 10% of lot area, whichever is smaller). In the R-1 zone inside the Amazon Neighbors, Fairmount Neighbors and South University Neighborhood Association boundaries a separate rule replaces this: 600 sq ft on lots under 9,000 sq ft, 800 sq ft on lots of 9,000 sq ft or more (EC 9.2751(17)(c)) · Setbacks: 10 feet

Max size: 900 sq ft (or 75% of the main building gross floor area, whichever is less) · Setbacks: Confirm with Salem Planning (SRC 700.007)

Max size: 800 sq ft (first ADU on the lot; a second ADU is capped at 500 sq ft - BDC 3.6.200(B)(3)) · Setbacks: Per underlying zoning district; detached ADU must be at least 6 ft from the main house

Max size: 800 sq ft or 50% of the primary dwelling's gross floor area, whichever is less · Setbacks: Per underlying zone accessory-structure standards — Confirm with Beaverton Planning Division

Max size: 1200 sq ft (proposed; not yet adopted) · Setbacks: Varies by zone; typically 20-30 ft

Max size: 850 sq ft of conditioned floor area; if using the reduced 3 ft side/rear setback exception (Sec. 54-506.f), the building footprint is capped at 600 sq ft · Setbacks: District accessory-building setbacks apply; optional exception allows one accessory building within 3 ft of interior rear lot lines if behind the main house with a footprint of 600 sq ft or less - not available along marsh, river, or lake lot lines

Max size: 850 sq ft on lots under 10,000 sq ft; 1,200 sq ft on lots 10,000 sq ft or larger; and no larger than the size or footprint of the principal structure · Setbacks: 5 ft minimum

Max size: Lesser of 1,100 sq ft or 15% of lot area (HOME Initiative). 2nd-story floor area capped at 550 sq ft. · Setbacks: 10 feet

Max size: Up to 1,500 sq ft (raised from 900 by the Livable Places Ch. 42 amendments, effective Nov 27, 2023); deed restrictions may be stricter · Setbacks: 5 feet

Max size: 800 sq ft (Dallas caps ADUs at 800 sq ft) · Setbacks: 15 feet

Max size: 800 sq ft (1,200 sq ft in the RE zone) per UDC §35-371 · Setbacks: 5 feet (detached ADU may be 3 ft or more from side and rear lines per UDC §35-371)

Max size: Commonly cited around 800-1,000 sq ft, but sources conflict - confirm the current cap with Fort Worth Development Services · Setbacks: Must meet the rear setback of the underlying district (commonly 5–10 ft for accessory structures)

Max size: Up to 1,000 sq ft, or the size of the main building, whichever is less (internal ADUs have no size cap) · Setbacks: Increase 1 ft for each foot of height above 17 ft

Max size: 35% of combined floor area up to 750 sq ft (45% up to 500 sq ft if the main dwelling is under 1,000 sq ft); new detached accessory buildings are also footprint-capped at 560 sq ft (R-5/R-6) or 650 sq ft (other R districts) · Setbacks: 5 ft (interior lots); 10 ft (corner lots)

Max size: Footprint-based: the greater of 1/3 of the main house's floor area, or 350 sq ft (lots up to 2,500 sq ft) / 500 sq ft (larger lots) · Setbacks: 1 ft minimum; 3 ft if windows face property line

Max size: 1,000 sq ft (up to 2 bedrooms); 1,200 sq ft for 3+ bedrooms · Setbacks: 5 feet (0 feet where the lot abuts an alley)

Max size: 1,000 sq ft living area · Setbacks: 15 feet (no setback required from an alley)

Max size: 1,000 sq ft · Setbacks: Confirm with Spokane Planning (SMC Title 17C)

Max size: 1,000 sq ft gross floor area · Setbacks: Confirm with Vancouver Planning (VMC 20.810.040)

Max size: 1,200 sq ft (Director may approve more for single-floor units in the primary structure or conversions/additions to existing accessory structures) · Setbacks: Subject to middle-housing dimensional standards (LUC 20.20.538) — Confirm with Bellevue Development Services