ADUs are allowed in SachseTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Sachse, TX
Is your property eligible for an ADU?
# of Properties
6,334
Owner-occupied
82%
Zoning districts
71
Avg Home Value
$477,026
Median Lot Size
0.22 acres
Avg Income
$118,900
Residential Types:
6,346 housing units
Single Family
95%
2-3 Family
2%
Apts (4+ units)
3%
Zoning Districts:
10,099 parcels · 71 districts
PD-10
15%(1,537)
PD-19
9%(885)
R-10
6%(653)
PD-18
5%(467)
Other
65%(6,557)
ADU Rules
What can you build in Sachse, TX?
Sachse, 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 size of 1,200 sq ft for an internal or attached ADU, excluding garage or unconditioned space
Detached ADU Size Limits
- –Maximum detached ADU size of 1,200 sq ft; garage or unconditioned space not counted.
Max Units
- –1 ADU per lot
Parking
- –1 space/ADU (Old Town); citywide standards none; may be waived by the city manager via a mixed-use shared parking plan; lots up to 50 ft wide require rear-entry, side, or pull-through.
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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ADU rules in other Texas municipalities
Rules change at the town line. Check the municipality your property is actually in.
Dallas County