Garages & RV Garages in Phoenix, AZ
Detached garages, RV storage, and workshop builds sized for your vehicles and your vision.
Built for What You Drive
Custom Garages That Actually Fit Your Life
Arizona homeowners know the frustration of a garage that is too small, too hot, and too cramped to use for anything beyond basic parking. Whether you need a detached two-car garage, a full-height RV garage that fits your motorhome or fifth wheel, or a climate-controlled workshop where you can actually work through the summer, Kelso Custom Builders builds it right.
We specialize in garages that go beyond the standard builder-grade box. Our designs account for the vehicles you actually own — Class A motorhomes that need 14-foot clearance, boats on trailers that demand 40-foot depth, lifted trucks with rooftop cargo boxes. We measure your specific equipment and design the structure around it, with room to spare.
Every garage we build is fully permitted, engineered for Arizona soil and wind conditions, and constructed under the direct supervision of owner Mark Kelso. AZ ROC License #318269. Call (602) 361-2310 to discuss your project.
RV & Oversized Vehicle Storage
Tall Enough, Wide Enough, Built Tough Enough
Storing an RV in the Arizona sun is a recipe for faded paint, cracked rubber, and damaged electronics. HOA violations and city ordinances also restrict street parking and driveway storage in many Phoenix-area communities. A purpose-built RV garage solves all of these problems while adding significant value to your property.
Our RV garages are engineered with 14-foot or taller sidewalls, reinforced headers for wide overhead doors, and foundations designed to support the concentrated weight of heavy vehicles. We install commercial-grade insulated doors that seal out dust and heat, and we can add electrical hookups so you can keep batteries charged and systems maintained between trips.
For homeowners with boats, trailers, ATVs, or classic car collections, we design multi-bay configurations that give each vehicle its own dedicated space. Pull-through layouts, side-entry doors, and extra-wide bays for tow vehicles are all standard options we offer.
Garage Features
More Than Just Parking
Every garage we build is designed around how you will actually use the space — not just what fits on paper.
RV & Boat Bays
14-foot or taller clearance, 40-50 foot depth, and commercial-grade overhead doors sized for motorhomes, fifth wheels, and boats on trailers.
Climate Control
Insulated walls and ceilings with mini-split HVAC or evaporative cooling keep your garage usable even when outdoor temps hit 115 degrees.
Heavy-Duty Electrical
200-amp subpanels, 240V outlets for welders and compressors, EV charger circuits, and dedicated lighting for workshop use.
Workshop Integration
Built-in workbenches, compressed air lines, dust collection hookups, tool storage, and epoxy-coated floors for a serious working space.
Insulation & Weatherproofing
Spray foam or batt insulation, weather-sealed doors, and dust-tight construction that protects vehicles and equipment from Arizona's harsh elements.
Architectural Match
Roofline, stucco color, stone accents, and trim details designed to complement your main home — not look like an afterthought.
Our Process
How We Build Your Garage
Site Visit & Vehicle Assessment
Mark visits your property, measures your vehicles, reviews setbacks and zoning rules, and discusses your goals — all at no cost.
Custom Design
We design the garage around your specific vehicles and use cases, select materials, and produce detailed plans for your approval.
Permitting
We submit engineered plans, handle all communication with the building department, and secure the permit on your behalf.
Construction
Foundation, steel or wood framing, roofing, electrical, insulation, doors, and finishes — all owner-managed with daily site visits.
Inspection & Handoff
Final inspection, walkthrough, and handover. Your garage is ready to park, work, and store — fully permitted and built to last.
Common Questions
Garage & RV Garage FAQs
Most Class A motorhomes require a minimum interior clearance of 14 feet in height and 12 to 14 feet in width per bay. Length varies, but 40 to 50 feet accommodates the majority of RVs and fifth wheels. For travel trailers and boats, 12-foot ceilings and 30-foot depth are often sufficient. We measure your specific vehicles and design around them, adding clearance for mirrors, antennas, and comfortable maneuvering.
A standard detached two-car garage in the Phoenix area typically starts around $50,000 to $80,000. RV garages, due to their larger footprint and taller walls, generally range from $80,000 to $200,000 or more depending on size, climate control, and interior finishes. Workshop conversions and fully finished interiors add to the cost. We provide detailed, transparent estimates before any work begins.
A standard detached garage typically takes 2 to 4 months from design to completion. Larger RV garages with electrical, insulation, and climate control may take 4 to 6 months. Permit timelines vary by municipality, but we handle all permitting in-house to keep the process moving as quickly as possible.
Yes, a building permit is required for any detached garage or accessory structure in Maricopa County. Zoning regulations dictate setbacks, maximum height, and lot coverage percentages. Some HOAs impose additional restrictions on detached structures, especially RV-sized garages. We research all applicable zoning and HOA rules before we begin design, so every plan we deliver is guaranteed to be buildable.
Absolutely. We routinely wire garages with 200-amp subpanels for welders, compressors, and power tools. Climate control options include insulated walls and ceilings, mini-split HVAC systems, and evaporative coolers — critical for working in an Arizona garage during the summer. We can also install overhead lighting, compressed air lines, workbenches, and dedicated circuits for EV chargers.
Yes, garage conversions are one of our specialties. We can convert an attached or detached garage into a finished workshop, home gym, studio, or even a permitted living space. Conversions typically require structural modifications, insulation, HVAC, and updated electrical. We handle permitting and ensure the finished space meets all building codes for its intended use.
Client Testimonials
What Our Clients Say
"Great communication, great guy, gets job done in very very timely fashion."
"Very responsive and thorough. Patiently educates homeowner. Creative suggestions."
"Great guy, very easy to work with and understands what you are trying to accomplish."
Start Your Project
Get a Free Garage Estimate
Whether you need a standard two-car garage, a towering RV bay, or a fully equipped workshop, Mark will visit your property and provide a free, no-obligation consultation. We typically respond within one business day.