ADUs are allowed in Indian HeadTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Indian Head, MD
Is your property eligible for an ADU?
# of Properties
1,682
Owner-occupied
74%
Zoning districts
9
Median Lot Size
3906.00 acres
Avg Income
$87,821
Residential Types:
1,682 housing units
Single Family
46%
Apts (4+ units)
1%
Other
54%
Zoning Districts:
1,840 parcels · 9 districts
R-2
41%(763)
TCMX
27%(499)
R-M
21%(387)
OS
7%(126)
Other
4%(65)
ADU Rules
What can you build in Indian Head, MD?
Indian Head, 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: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 30% of the gross floor area of the principal dwelling
Detached ADU Size Limits
- –Maximum detached ADU size of 50% of the main structure’s gross floor area
- –Maximum detached ADU size cannot exceed the principal building’s total square footage
Max Units
- –Single-family: 1 ADU/lot (within principal dwelling or in an accessory building)
- –Critical Area (RCA): 1 ADU as part of primary dwelling
Owner Occupancy
- –Owner must occupy at least one dwelling unit on premises
Parking
- –2 spaces per ADU; no maximum; spaces must be on the same lot; no joint residential parking; admin may grant deviations; if ADU increases site intensity >20%, parking may be required for the entire premises.
Rental Restrictions
- –Owner-occupancy required for at least one unit; both units cannot be rented simultaneously.
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.
Charles County