Can I build an ADU in Charlotte?

Yes, ADUs are allowed on single-family lots but must be approved by both City and County.

How much is an ADU permit in Charlotte?

Total city and county fees typically start around $1,350 and can exceed $9,000 for large units.

Charlotte ADU Permit Cost: $1,350

What's Required in Charlotte

Maximum size is 1,000 heated square feet and 50% of the primary home floor area
Only one ADU allowed per single-family lot
Must be a permanent residential structure (no campers or RV conversions)
City LDIRL permit must be approved prior to County building permit
One off-street parking space is required per ADU unit
Must remain under the same ownership as the main home

How Much Does an ADU Permit Cost in Charlotte?

Budget $1,350–$9,000 for the Charlotte permit itself (project-based), issued by the Mecklenburg County Code Enforcement — but treat that as the entry fee, not the total. ADUs are full dwelling units, so the permit stack usually includes building, electrical, plumbing, and mechanical trade permits, plus plan review. One local note: includes City LDIRL review ($410) and County building permit fees ($1,350+). Get an itemized fee estimate from the department before finalizing your budget; the spread between a simple conversion and a new detached build is wide.

ADU Size Limits and Zoning Rules in Charlotte

Before drawing plans, check the two gates that sink most ADU projects: size and zoning. Size ceilings vary by lot and ADU type (attached, detached, or conversion), so confirm your specific configuration. Other recorded conditions: one off-street parking space is required per ADU unit; must remain under the same ownership as the main home. Setbacks, height limits, and utility connections layer on top of those rules. The Mecklenburg County Code Enforcement can confirm what your specific lot allows — worth doing before you pay for architectural drawings rather than after.

How to Get a ADU Permit in Charlotte

Step 1: Address Request

Establish a new address with Mecklenburg County for the ADU unit.

Step 2: City LDIRL

Submit the Land Development permit to the City of Charlotte via Accela.

Step 3: County Building Permit

Submit architectural and engineered plans to the County after City approval.

Step 4: Fee Payment

Pay the City LDIRL ($410) and County building/trade fees (valuation-based).

Step 5: Full Inspections

Schedule foundation, framing, rough-in, and final inspections for CO issuance.