Service 02 • Municipal Permitting
ADU Permits & City Approvals in Orange County.
Our in-house permit team submits directly to your local building department (Irvine, Newport Beach, Anaheim, Santa Ana, Costa Mesa, etc.). We manage all plan check reviews, city comments, and correction notices until your building permit is fully issued.
Typical Timeline
6 to 12 Weeks (City Dependent)
City Permits
100% In-House
Contractor License
Class B Alliance
2026 COST BREAKDOWN • LINE-ITEM TRANSPARENCY
Estimated Line-Item Costs for ADU Permits & City Approvals
Real budget allocations across architectural drawings, city permit fees, utility trenching, and turnkey construction in Orange County.
| Cost Component | Typical Range | Key Details & Code Notes |
|---|---|---|
| Architectural Plans & Structural Engineering | $6,000 - $9,500 | Includes Title 24 energy calculations & 3D renderings |
| Municipal Plan Check & City Permit Fees | $2,500 - $5,000 | Exempt from school impact fees if under 500 sq ft |
| Plumbing Trenching & Sewer Utility Connection | $8,000 - $18,000 | Independent subpanel & dedicated water tie-in |
| Structural Foundation & Framing Scope | $35,000 - $85,000 | Engineered slab pour or garage envelope retrofit |
| Interior Finishes, Kitchen & Bath Turnkey | $28,000 - $55,000 | Quartz counters, mini-split HVAC & custom cabinetry |
SCOPE SPECIFICATIONS
What's Included in Your Single-Contract Scope
Direct submissions to all Orange County building departmentsFull architectural compliance and licensed Class B construction oversight.
Prompt resolution of city plan check correction noticesFull architectural compliance and licensed Class B construction oversight.
HOA architectural review and compliance coordinationFull architectural compliance and licensed Class B construction oversight.
Guaranteed permit approval with zero contractor handoffsFull architectural compliance and licensed Class B construction oversight.
Request Your ADU Permits & City Approvals Quote
Get exact line-item estimates and municipal permit review details for your property within 1 business day.
Loading Secure Lot Assessment Form...
Having trouble loading the form? Call Planning Desk: (657) 298-4061