RV garage cost per square foot
| Shop or RV bay | 2026 planning rate |
|---|---|
| Stucco shop or RV garage (matches the house) | $95 to $135 per sq ft |
| Insulated shop with AC | $130 to $165 per sq ft |
| Red-iron steel building (no HOA) | Quote pending |
These rates cover the whole building: site prep, slab, framing, walls and roof, a tall door, permits, electrical and the builder's overhead. The calculator above uses the same numbers.
What common RV garage sizes cost
| RV garage size | Stucco, matches the house | Insulated shop with AC |
|---|---|---|
| 20x40 (800 sq ft) | $76,000 to $108,000 | $104,000 to $132,000 |
| 24x40 (960 sq ft) | $91,200 to $129,600 | $124,800 to $158,400 |
| 24x45 (1,080 sq ft) | $102,600 to $145,800 | $140,400 to $178,200 |
| 24x50 (1,200 sq ft) | $114,000 to $162,000 | $156,000 to $198,000 |
| 30x50 (1,500 sq ft) | $142,500 to $202,500 | $195,000 to $247,500 |
Sizes are outside floor area. Each range uses the same per square foot rates as the calculator, with a short utility run. A long run or a new subpanel adds $4,500 to $8,000.
Already have a bid? Free fair price check
Enter your builder's bid total, the project, the size and your city. You see right away where it falls in our 2026 planning ranges. We compare numbers only. We do not rate builders.
The 14 ft door
Many fifth wheels are around 13 ft 6 in tall, so owners usually plan a 14 ft door. In our line items, a 14 ft door and jackshaft opener runs $4,800 to $7,500. Measure your rig, including AC units and antennas, before you design.
A 14-foot RV door usually means 16 to 18 foot walls and an 18 to 22 foot roof peak. That is taller than the reduced-setback height limit in Queen Creek, Chandler and Mesa. So the door decides the setbacks. See the height drawing.
Metal vs stucco RV garages
Stucco that matches the house is what most HOAs ask for. Red-iron steel can work on a no-HOA lot if the city or county allows it.
Steel kits alone run about $11 to $18 per sq ft. The slab, doors, electric and erection are most of the cost, so ask for a full turnkey quote.
RV garage with living quarters
Living quarters turn part of the project into a casita (an ADU), with its own rules and a higher cost per foot. The living space and the RV bay are treated differently by the city. See RV garage with a casita for costs and the setback rules.
Where the money goes
Line items for a 24x45 stucco RV garage with a 14 ft door
| Line item | Low | High |
|---|---|---|
| Site prep, grading and engineering | $4,700 | $8,300 |
| Concrete slab (1,080 sq ft) | $15,300 | $19,200 |
| Framing (1,080 sq ft) | $24,100 | $32,000 |
| Exterior walls and roof (1,080 sq ft) | $19,800 | $26,700 |
| 14 ft door and jackshaft opener | $4,900 | $7,400 |
| Permits and plan review fees | $900 | $1,900 |
| Plumbing, electrical, interior finishes, bath, kitchen, builder overhead and contingency (balance) | $32,900 | $50,300 |
| Total | $102,600 | $145,800 |
Where a tall RV garage fits
- In Queen Creek, a detached accessory building over 15 feet tall must meet the zoning district's normal side and rear setbacks.
- In Chandler, detached accessory buildings other than ADUs are limited to 15 feet tall and must meet the district's side and rear setbacks.
- In Mesa, a detached accessory building over 15 feet tall at the peak must meet the district's normal setbacks and generally cannot be taller than your house's roof peak without a Special Use Permit.
- In unincorporated Maricopa County, detached accessory buildings may sit in the required side or rear yard as close as 3 feet to the lot line, as long as they cover no more than 30% of that yard.
- Gilbert, the Town of San Tan Valley and unincorporated Pinal County: we have not confirmed current numbers. Check with the town or county.
Not sure about your lot? Ask for the free RV garage fit check.
Frequently asked questions
How much does it cost to build an RV garage in Arizona?
In the East Valley, our 2026 planning rates are $95 to $135 per sq ft for stucco and $130 to $165 for an insulated shop with AC. A 24x50 stucco RV garage is about $114,000 to $162,000. These are planning ranges, not quotes.
How much is a 20x40 RV garage?
About $76,000 to $108,000 in stucco at our 2026 rates, or $104,000 to $132,000 insulated with AC.
Is a metal RV garage cheaper?
Often the kit is, but the slab, doors, electric and erection are most of the cost. We have not confirmed a local turnkey steel price.
Can an RV garage use the 5-foot casita setback?
No source we checked says so. The 5-foot ADU setback applies to the living unit. In Chandler and Mesa, a garage attached to an ADU must meet the normal setbacks.
Sources
- Queen Creek accessory structure page
- Chandler Ordinance 5113
- Mesa Ordinance 5883
- Maricopa County Zoning Ordinance (PDF)
- Casita Kings (Mesa area): 576 sq ft $165K, 768 sq ft $225K, 990 sq ft $245K
- Jematell Homes: Arizona RV garage tiers, 2026
- HomeAdvisor: RV garage cost, updated Jun 19, 2026
- City of Mesa building permits open data (valuations)
All sources checked Oct 29, 2026.
