How Long Does It Take to Get a Building Permit?

Quick Answer

A building permit takes 2–12 weeks for most residential projects. Simple over-the-counter permits for small projects like fences or water heaters can be issued the same day, while complex projects like new homes or major additions may require 2–6 months of plan review and approval.

Timeline by Project Type

Project	Typical Permit Timeline
Water heater, minor electrical/plumbing	Same day – 1 week
Fence (under 6 ft)	1–2 weeks
Deck or patio cover	2–4 weeks
Roof replacement	1–3 weeks
Kitchen or bathroom remodel	2–6 weeks
Room addition	4–10 weeks
Accessory dwelling unit (ADU)	4–12 weeks
New home construction	6–24 weeks
Commercial building	8–30+ weeks

Residential vs. Commercial

Residential permits are generally faster because most jurisdictions have streamlined review processes for single-family homes. Many allow same-day or counter permits for straightforward work like re-roofing, HVAC replacement, or minor electrical.

Commercial permits involve more agencies and reviews — fire department, health department, ADA compliance, traffic studies, environmental review, and sometimes public hearings. A commercial tenant buildout might take 4–8 weeks, while a new commercial building can take 6 months or more.

The Permit Process Step by Step

1. Pre-application meeting (optional, 1–2 weeks to schedule): Discuss the project with the building department before submitting
2. Prepare plans and documents (varies): Hire an architect or designer if required. Structural engineering may be needed.
3. Submit application (1 day): File the permit application with drawings, site plans, and fees
4. Plan review (2–8 weeks): The building department reviews plans for code compliance. May involve structural, mechanical, electrical, and plumbing review.
5. Corrections and resubmittal (1–4 weeks if needed): Address any review comments and resubmit revised plans
6. Permit issuance (1–3 days after approval): Pay remaining fees and receive the permit

Common Causes of Delays

Incomplete applications are the number-one reason for delays. Missing site plans, incorrect setback dimensions, or unsigned forms trigger a correction cycle that adds 2–4 weeks.

HOA approval may be required before or in parallel with the municipal permit. HOA architectural review committees meet monthly in most communities, so missing a deadline pushes you back 30 days.

Zoning variances are needed when a project does not conform to current zoning rules (setbacks, lot coverage, height limits). Variance hearings add 1–3 months.

Environmental review applies in flood zones, coastal areas, wetlands, and historic districts. Additional agency signoffs can add months to the process.

Staff shortages in building departments, especially in fast-growing cities, cause backlogs. Some departments publish their current review timelines online.

How to Speed Up the Process

• Submit complete, accurate plans the first time — incomplete submissions are the biggest time killer
• Hire a licensed architect or designer who knows local code requirements
• Use expedited review if your jurisdiction offers it (typically double the review fee for half the wait time)
• Schedule a pre-application meeting for complex projects to identify potential issues upfront
• Hire a permit expediter — these professionals specialize in navigating building departments and can manage the process for you
• Check online portals — many cities now accept electronic plan submissions and offer real-time application tracking
• Apply during off-peak times — building departments are typically busiest from March through June

Permit Fees

Fees vary widely by jurisdiction and project value. A rough estimate is $1–$2 per square foot for residential work, or a percentage of the total project cost (typically 1–2%). A deck permit might cost $200–$500, while a new home permit could be $5,000–$15,000 including impact fees.