Permit type guide · ranked #4 nationally
New construction permits — complete guide (2026)
Always required for new residential and commercial buildings. Single-family homes account for 63% of residential construction permits nationally. Texas, Florida, and California lead by volume.
National avg: $1,000–$5,000+
Approval: 2–12 weeks
All 50 states
#4 by volume
~900KIssued annually
$1,000–$5,000+National avg cost
2–12 weeksTypical approval
10–12%Share of all permits
New construction always requires a building permit. There are no exceptions. You will also need separate electrical, plumbing, and mechanical permits — and potentially grading, demolition, and utility permits depending on your site.
When you need a new construction permit
| Work type | Permit required? | Notes |
|---|---|---|
| Single-family home (new) | Always | Foundation through certificate of occupancy |
| Multi-family building | Always | Additional fire/accessibility review |
| Detached garage (new) | Always | Even if no utilities |
| Commercial building | Always | Commercial plan review required |
| Manufactured home placement | Always | Site prep and utility hookups |
| Modular home installation | Always | Foundation and utility connections |
| Tiny home (on foundation) | Always | Treated as standard construction |
| Tiny home (on wheels) | Depends | May be classified as RV — check locally |
How to get a new construction permit — step by step
1
Hire a licensed architect or designer
Most jurisdictions require stamped architectural plans for new construction. Some owner-builders can submit their own plans for simple structures.
2
Submit for plan review
Plans go to the building department for review against zoning, setbacks, energy codes, and structural requirements. This is the longest step — 2–8 weeks depending on jurisdiction.
3
Pay permit fees
Fees are typically based on square footage or project valuation. Expect $1,000–$5,000+ for a standard single-family home.
4
Receive permit and post on-site
The permit must be visible at the job site throughout construction. Inspections are tied to the permit number.
5
Inspections at each phase
Typically: foundation, framing, rough electrical, rough plumbing, rough HVAC, insulation, drywall, and final. Each must pass before the next phase begins.
6
Certificate of occupancy
After passing final inspection, the building department issues a Certificate of Occupancy (CO). You cannot legally occupy the building without it.
Cost by project type
| Project | Permit fee range | Typical timeline |
|---|---|---|
| Single-family home (2,000 sf) | $1,500–$4,000 | 4–10 weeks |
| Single-family home (3,500 sf) | $2,500–$6,000 | 6–14 weeks |
| Detached garage | $300–$800 | 2–4 weeks |
| Multi-family (4-unit) | $3,000–$8,000 | 6–16 weeks |
| Commercial (small) | $2,000–$10,000+ | 6–20 weeks |
| ADU (detached) | $500–$2,000 | 2–8 weeks |
Frequently asked questions
What is a certificate of occupancy?
A CO is the final document issued after all inspections pass, confirming the building is safe to occupy. Banks, insurance companies, and municipalities all require it.
Can I act as my own general contractor?
Yes in most states for your primary residence — called 'owner-builder.' You take on legal responsibility for code compliance. Some states require a licensed GC for projects over a certain valuation.
How long does plan review take?
Varies widely: rural counties can be 1–2 weeks; major cities like Los Angeles or New York can take 3–6 months for complex projects. Many jurisdictions now offer expedited review for a fee.
What happens if I build without a permit?
The building may be ordered demolished. You cannot sell the home without resolving unpermitted construction. Mortgage lenders will not finance a home with unpermitted additions.
Data sources: Shovels.ai national permit aggregator · US Census Bureau BPS · IRC/IBC 2024