
Detached Structures
Detached Structure Plans in Arizona
Residential Design prepares permit-ready plans for detached garages, RV garages, shops, casitas, guest houses, and accessory structures throughout Arizona. These projects often depend heavily on site layout, setbacks, access, utilities, and local jurisdiction requirements.
What This Service Covers
Plans for detached structures that need city or county review
Detached structures are often straightforward in concept but site-sensitive in practice. The plan set needs to account for building size, use, setbacks, utilities, drainage, access, and how the structure relates to the existing home and property.
Detached Garages & RV Garages
Plan sets for detached garages, RV garages, oversized vehicle storage, and related accessory structures.
Shops & Workshops
Detached shop and workshop plans coordinated with site layout, building use, access, and permit requirements.
Casitas & Guest Houses
Residential accessory living spaces where layout, utilities, setbacks, and local requirements need to be coordinated early.
Accessory Structures
Permit-ready drawings for detached structures that need clear plans for city, town, or county review.
What's Included
Site-aware planning for garages, shops, casitas, and accessory buildings
A detached structure usually needs more than a simple floor plan. Placement, setbacks, access, roof form, utilities, existing structures, and jurisdiction requirements all affect how the drawings are prepared.
- Detached garage and RV garage plans
- Shop, workshop, and accessory building layouts
- Casita and guest house planning support
- Site-aware placement and access coordination
- Permit-ready residential drawing sets
- Setback and lot coverage awareness
- Utility and service location coordination
- Plan review support when corrections are issued

Our Design Process
A clear, collaborative approach from initial concept to construction-ready documents.
Initial Fit & Project Review
We start by reviewing the property, project type, goals, and any existing information to understand the scope and whether the project is a good fit.
Existing Conditions & Site Information
If needed, we work from prior plans, site information, photos, or measured as-built drawings so the design starts from accurate existing conditions.
Design & Layout Development
Floor plans and layout ideas are developed around the lot, the project goals, and how the space actually needs to function.
Permit Plans & Revisions
Once the design is dialed in, the drawing set is prepared for permitting and updated as needed to respond to plan review comments.
Detached Structure FAQ
Frequently Asked Questions
Do detached structures usually need permits?
Many detached structures require permits, especially garages, RV garages, shops, casitas, guest houses, and larger accessory buildings. Requirements depend on the jurisdiction, size, use, utilities, and site conditions.
What information is helpful before starting?
A property address, rough size, intended use, preferred location, utility needs, and any site constraints are helpful. Larger lots, septic systems, easements, washes, and access conditions can affect placement.
Can you help with RV garages and shops?
Yes. RV garages, detached garages, shops, and accessory structures are common Arizona projects. Plans typically need to show layout, elevations, site placement, construction notes, and coordination points for engineering when required.
Do casitas have different requirements?
Often, yes. Casitas and guest houses can involve additional zoning, utility, parking, and occupancy considerations depending on the jurisdiction and how the space will be used.
Related Services
Services that often connect to detached structures
Areas Served
Detached Structure Plans Across the Phoenix Metro Area
We provide residential design services throughout the Phoenix metro area, with experience navigating local requirements, plan review comments, and permit submittal workflows.
Service Areas
*Jurisdiction pages include useful links, code adoption information, permit portals, and area-specific guidance.
Additional Areas Served
Contact Residential Design
Planning a Detached Structure?
Tell us what you want to build, where it will be located on the property, and what jurisdiction the project is in. Good site information early helps avoid redesigns and permit delays.