Davis County · 16,502 residents
Centerville ADU rules
Centerville: internal ADUs allowed (lot 6,000+ sq ft); detached ADUs are not generally allowed today. Beginning October 1, 2026, state law (S.B. 284) requires the city to permit a detached ADU on qualifying single-family lots of 11,000 sq ft or more.
Internal ADU (inside the home)
Detached ADU (backyard building)
Not yet fully verified · last reviewed September 7, 2026 See sources
Centerville ADU rules at a glance
| Rule | Internal ADU (basement, attic, inside the home) | Detached ADU (backyard building) |
|---|---|---|
| Allowed? | Allowed | Not generally allowed |
| Minimum lot | 6,000 sq ft. Statewide statute includes a small-lot pathway around 6,000 sq ft for many internal ADUs — confirm how Centerville applies it on your zone. | 11,000 sq ft. S.B. 284 statewide detached floor for specified municipalities: roughly 11,000 sq ft on qualifying single-family lots (operative Oct 1, 2026). Local detached eligibility is limited or prohibited until a compliant ordinance is in force. |
| Owner occupancy | Most Utah cities still expect the owner to live in the primary home or the ADU—verify the current Centerville occupancy rule before you design. | Not yet verified — confirm with the city |
| Permit process | Expect an ADU/building permit path through Community Development; the city has tracked ADU permits in recent housing reports. | Not yet verified — confirm with the city |
State law: detached ADUs from October 1, 2026
Centerville is a “specified municipality” under Utah S.B. 284. Beginning October 1, 2026, it must permit one detached ADU as a permitted use on a lot of 11,000 sq ft or more that has a detached single-family home. The city can still apply setbacks, height, design, owner-occupancy and limited parking rules, and it may allow detached ADUs on smaller lots. How the state ADU laws work.
How our property map screens Centerville lots
The map colors parcels using the rules on this page and the recorded lot size. A color is a planning screen, not a permit; Centerville makes the decision.
- Because external ADUs are not typical in the Centerville research, the map does not mark a new external ADU as likely there.
- "Likely" above 15,000 sq ft is this site's planning band for a large recorded lot. It is not a sentence in the Centerville code. Owner occupancy, parking, setbacks, zones, and HOA rules below still have to be checked.
Planned communities, PRDs and PUDs
Reviewed on September 22, 2026 against this city's research file, its published ADU page where one was found, and Utah meeting packets. No adopted sentence was confirmed that allows or bans an ADU in every PUD, PRD, PRUD, or planned community. If the assessor class or subdivision name says PUD, PRD, PRUD, planned unit development, planned residential development, planned community, resort community, or master planned community, the map keeps that lot highly unlikely regardless of size. A plat, CC&Rs, or development agreement can still prohibit an ADU where the zone allows one.
Planning notes for Centerville
Centerville advertised a September 1, 2026 council hearing on a new Chapter 12.58 for detached ADUs and changes to the residential-use table. This is a useful reason to revisit a backyard-home idea. The notice establishes what was proposed, not the final vote or effective rules; obtain those before setting a design envelope.
Bring these to your review
- Lot area and residential zone
- Concept footprint, height and access
- Final ordinance and effective date for Chapter 12.58
The question to resolve first
Was Chapter 12.58 adopted, and which version applies to an application for this lot?
Sources
We link only to government sources and public meeting records. Codes change; confirm the current version with Centerville before you apply.
- Centerville September 1, 2026 hearing — proposed Chapter 12.58
Public hearing notice; final adoption not verified
- Utah S.B. 284 (2026), enrolled bill
Statewide detached-ADU requirements for specified municipalities, operative October 1, 2026.
- Official Centerville website
Common Centerville ADU questions
Can you build an ADU in Centerville?
Centerville: internal ADUs allowed (lot 6,000+ sq ft); detached ADUs are not generally allowed today. Beginning October 1, 2026, state law (S.B. 284) requires the city to permit a detached ADU on qualifying single-family lots of 11,000 sq ft or more. This is planning guidance, not a permit. Confirm the zone on your parcel with Centerville.
What lot size does Centerville require for an ADU?
Internal ADU: 6,000 sq ft minimum. Statewide statute includes a small-lot pathway around 6,000 sq ft for many internal ADUs — confirm how Centerville applies it on your zone. Detached ADU: 11,000 sq ft minimum. S.B. 284 statewide detached floor for specified municipalities: roughly 11,000 sq ft on qualifying single-family lots (operative Oct 1, 2026). Local detached eligibility is limited or prohibited until a compliant ordinance is in force.
Does Centerville require the owner to live on the property?
Internal ADU: Most Utah cities still expect the owner to live in the primary home or the ADU—verify the current Centerville occupancy rule before you design. Detached ADU: Not yet verified — confirm with the city.
What does it cost to build an ADU in Centerville?
Wasatch Front planning bands are often about $55,000–$145,000 for an internal suite, $70,000–$175,000 for a garage conversion, and $95,000–$250,000 or more for a new detached unit, before unusual site work. These are planning ranges, not bids.
Can an HOA block an ADU in Centerville?
City approval does not override CC&Rs or plat notes. Read the HOA documents and your subdivision plat before you design. A private restriction can stop a unit the city would otherwise allow.
Before you design: general checks for any Utah ADU
General planning advice, not Centerville code.
- Confirm the zoning district on the city zoning map. The county assessor’s “residential” class is not zoning.
- Read your HOA CC&Rs and subdivision plat notes; private restrictions can block a unit the city allows.
- Sketch existing and proposed parking. Driveway geometry and access often decide what fits.
- Ask early about sewer, water and electrical capacity; utilities can force a redesign.
- Expanding a building’s footprint usually triggers full setback and height rules.
Nearby city ADU rules
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Utah ADU Builder provides educational planning guidance. This page is not legal advice and not a permit. Population: UGRC POPLASTESTIMATE / Census-derived municipal estimates (manual fill where UGRC blank). Editorial standards.