

ADUs are allowed in Forest HillTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Forest Hill, TX
Is your property eligible for an ADU?
# of Properties
4,391
Owner-occupied
0%
Zoning districts
15
Avg Home Value
$208,898
Median Lot Size
0.21 acres
Avg Income
$55,479
Residential Types:
4,391 housing units
Apts (4+ units)
3%
Other
97%
Zoning Districts:
5,427 parcels · 15 districts
R-2
69%(3,736)
R-1
9%(511)
GB
6%(338)
R-3
5%(274)
Other
10%(568)
ADU Rules
What can you build in Forest Hill, TX?
Forest Hill, TX follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Special Permit
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.
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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.
Tarrant County