ADUs are allowed in JarrellTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Jarrell, TX
Is your property eligible for an ADU?
# of Properties
1,827
Owner-occupied
64%
Zoning districts
14
Avg Home Value
$276,635
Median Lot Size
0.16 acres
Avg Income
$109,381
Residential Types:
1,827 housing units
Residential
100%
Zoning Districts:
3,097 parcels · 14 districts
SF-2
71%(2,199)
C-2
8%(239)
SF-3
6%(189)
C-3
5%(162)
Other
10%(308)
ADU Rules
What can you build in Jarrell, TX?
Jarrell, TX follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum internal or attached ADU size of 20% of the lot area
Detached ADU Size Limits
- –Maximum size of 20% of the lot size
Owner Occupancy
- –ADU rental allowed only on owner-occupied properties.
Parking
- –1 off-street space per ADU; no reductions or exemptions; general access/parking standards apply.
Rental Restrictions
- –ADU rentals allowed only on owner-occupied properties; rentals prohibited on non-owner-occupied properties.
ADU State Law
What can you build in Texas?
- –Texas does not have a statewide ADU law. ADUs are regulated entirely at the local level.
- –ADU rules vary significantly by city, and many jurisdictions prohibit ADUs outright.
- –Counties generally lack zoning authority, but other restrictions may still apply outside city limits.
- –Outside city limits, ADU feasibility often depends on subdivision rules, deed restrictions, and septic or fire requirements.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
Is your property eligible for an ADU?
ADU rules in other Texas municipalities
Rules change at the town line. Check the municipality your property is actually in.
Williamson County