4-inch reinforced standard
Included912 sq ft slab footprint.
Open base estimateGarage and living
24x38 Gambrel Garage With ADU
24x38 footprint, 1,824 total sq ft
A 24x38 Gambrel garage with a finished apartment above, full kitchen, full bathroom, enclosed interior stair, reinforced slab, and published turnkey starting price.
Published starting price$329,900
Published base scope
What the starting price covers
The signed specifications identify final selections, quantities, allowances, and exclusions.
- 4-inch reinforced slab
- 912 sq ft garage below
- Finished ADU above with full kitchen and bathroom
- Gambrel roof and enclosed interior stair
- Permit and final inspection
Concrete and comfort
Choose the slab package by size
Cartwright publishes a 4-inch reinforced slab as the standard wherever the model includes concrete. Final thickness, reinforcement, base, edges, and concrete strength follow the confirmed loads, soils, use, local requirements, and approved plans.
6-inch reinforced slab
+$3,600$4 per sq ft across 912 sq ft, rounded to the nearest $100.
Add 6-inch slabHydronic radiant heat
+$18,800Planning allowance for 912 heated sq ft. Includes under-slab insulation, PEX, manifolds, controls, and a sized heat source.
Add radiant heatRadiant pricing assumes a new slab and is finalized after heat-loss design, zoning, utilities, and equipment selection. Site preparation, foundations, thickened edges, equipment pads, and special loading requirements are confirmed in the project scope.
Next step
Put this building on your property.
Configure the model, share the property, and send the request. Cartwright reviews the site and scope before confirming the complete contract price.