ADUs are allowed in GreensboroTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Greensboro, MD
Is your property eligible for an ADU?
# of Properties
744
Owner-occupied
64%
Zoning districts
13
Avg Home Value
$207,873
Median Lot Size
0.22 acres
Avg Income
$59,102
Residential Types:
744 housing units
Apts (4+ units)
1%
Other
99%
Zoning Districts:
882 parcels · 13 districts
R-1
68%(602)
CC
9%(79)
R-2
8%(69)
R-3
4%(32)
Other
11%(100)
ADU Rules
What can you build in Greensboro, MD?
Greensboro, MD 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: Not permitted
Interior / Attached ADU Size Limits
- –Maximum size of 500 sq ft for an internal accessory apartment under performance standards
- –Maximum size is the lesser of 33% of the dwelling’s gross livable floor area or 800 sq ft
Max Units
- –RCA overlay: 1 ADU per primary dwelling unit; Single-family detached: none specified; Duplex/multifamily: ADUs not permitted; IDA/LDA overlays: none specified.
Owner Occupancy
- –Either the primary unit or ADU must be owner-occupied.
Parking
- –4 total off-street spaces required for the principal dwelling + ADU; internal-conversion ADUs under Performance Standards require no additional off-street parking; administrator may grant an exception to the 4-space rule if occupants have no vehicles; no more than 2 vehicles owned by ADU occupants must be parked off-street
Rental Restrictions
- –Short-term rentals (<30 days) prohibited; tenancy must be month-to-month or longer (minimum 30 days).
ADU State Law
What can you build in Maryland?
- –Local-law mandate: By Oct 1, 2026, each legislative body must adopt a local law authorizing ADUs under this section.
- –Local zoning mostly remains: The subtitle generally does not alter local zoning power except as provided, but locals must establish policies that further the subtitle's intent.
- –Definition-based size cap: An ADU must be ≤ 75% of the size of the primary SF detached dwelling and subordinate in use; ADUs may be detached or attached.
- –Density/growth limits: ADUs must be excluded from density calculations and from measures limiting residential growth that pertain to the lot/parcel/tract.
- –Setbacks: Local law cannot set side/rear setbacks that exceed existing accessory-structure setbacks.
- –Parking: If a jurisdiction adds off-street parking requirements, it must consider specified factors and provide a waiver process, and must complete a parking study before adopting such requirements.
- –Alley access option: Local law may prohibit converting an accessory structure to an ADU if only vehicular access is from an alley.
- –Codes/adequate facilities: Local law must provide for ADU construction meeting public health/safety/welfare standards, including building codes and adequate public facilities provisions.
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 Maryland municipalities
Rules change at the town line. Check the municipality your property is actually in.
Caroline County