ADUs are allowed in MorrisvilleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Morrisville, NC
Is your property eligible for an ADU?
# of Properties
6,633
Owner-occupied
77%
Zoning districts
31
Avg Home Value
$810,499
Median Lot Size
0.14 acres
Avg Income
$143,429
Residential Types:
6,633 housing units
Single Family
99%
Other
1%
Zoning Districts:
7,645 parcels · 31 districts
MDR
37%(2,814)
HDR
28%(2,125)
LDR
13%(1,018)
C-MDR
4%(326)
Other
18%(1,362)
ADU Rules
What can you build in Morrisville, NC?
Morrisville, NC 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 1,000 sq ft for an accessory apartment located within the principal dwelling.
Max Units
- –1 ADU per lot for single-family detached/duplex/single-family attached/live-work dwellings (detached or within the principal dwelling). 0 per lot for bungalow courts/pocket neighborhoods. 0 per lot for multifamily or manufactured-home principal dwellings. JADU provisions not specified.
Owner Occupancy
- –Owner-occupancy is not required for ADUs.
Parking
- –1 space/ADU (off-street), in addition to primary-dwelling spaces; no max; driveways may count only for certain dwelling types (bungalow courts, pocket neighborhoods, single-family detached, duplex, manufactured home, single-family attached); garages/carports do not count; on-street spaces cannot meet off-street requirements.
Rental Restrictions
- –Short-term rentals (<30 days) prohibited; ADUs shall not be leased for tenancies of less than 30 days.
ADU State Law
What can you build in North Carolina?
- –North Carolina does not have a statewide ADU mandate; ADU rules are set by individual municipalities.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
- –There is active proposed legislation (H627 / S495, "Regulation of Accessory Dwelling Units") that would create G.S. 160D-917 and require local governments to allow at least one ADU in certain single-family areas, but it is not enacted.
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 North Carolina municipalities
Rules change at the town line. Check the municipality your property is actually in.
Wake County