ADU Construction in North Little Rock, AR

North Little Rock has a mixed housing stock: 60% detached houses, 2% attached or townhouse units and 28% in buildings of five or more units.¹ On a mixed stock, feasibility turns on the individual lot - detached houses on larger parcels are the usual candidates; attached homes rarely qualify. Building permits in North Little Rock are normally issued by the city building department.^2,3 ADU plan review and permits go through the city building department; the contractor prepares the plan set and submits it.

Owners and renters are roughly balanced in North Little Rock, with 45% of occupied homes owner-occupied (66% statewide).¹ Where most occupied homes are rented, ADU inquiries often come from owners of rental property; the feasibility review is the same. Somewhat more of North Little Rock's housing predates 1980 than the national share: 57% against 50%, with 15% built since 2010.¹ Older lots often have existing detached garages, the usual candidate for a conversion; the slab height and moisture barrier decide the real scope.

North Little Rock sits in IECC climate zone 3A (Mixed-Humid).⁴ In a mixed climate zone, the energy code balances heating and cooling; insulation levels and window ratings are set by the zone. The median owner-occupied home in North Little Rock is valued at $178,900 (ACS), close to the Arkansas median of $188,000.¹ Values near the state median mean the standard scope and finish grades apply without adjustment.

Heating and cooling loads are both real: about 3,165 heating and 1,989 cooling degree days a year (base 65°F).^5,6 With both heating and cooling seasons, assemblies are specified for moisture movement in both directions.