PolyWiseDo I need a permit? Common small business permits
Updated October 21, 2026
Do you need a permit? Usually yes, if you build or renovate, move into a new space or change how it is used, put up a sign, serve food or alcohol, hold an event, or run a business from home. Permits come from your city or county, so the rules depend on your address. Ask the local planning and permitting office before you sign a lease or start work, because fixing a missed permit later costs more than getting it first.
Common permits for small businesses
- Building permit: for construction, renovation, electrical, plumbing or HVAC work, even inside a leased space.
- Certificate of occupancy: before you open in a new space, or when you change how a space is used, such as a shop becoming a restaurant.
- Zoning approval: confirms your type of business is allowed at your address.
- Sign permit: many towns limit the size, lighting and placement of storefront signs.
- Health permit: for selling or serving food, usually issued by the county or state health department after an inspection.
- Fire inspection or permit: for occupancy limits, exits, and some equipment and materials.
- Outdoor seating or sidewalk permit: for tables, displays or signs on public sidewalks.
- Temporary or special event permit: for pop-ups, festivals and events.
- Home occupation permit: some towns require one to run a business from home, especially with customers or signs.
Check before you sign a lease
The most expensive permit mistake is signing a lease for a space where your business is not allowed, or that needs costly upgrades to pass inspection. Before you sign, ask the local planning office whether your use is allowed at that address and what it takes to get a certificate of occupancy. Ask the landlord who pays for any required work.
Permit rules change
Cities and counties update their sign rules, zoning codes, fees and inspection requirements through council and planning board votes. A rule that did not apply when you opened can apply when you renovate, renew or add a service.
Hear about permit changes
PolyWise watches the official city and county pages for your address and sends a short alert when one that affects your business changes, with a link to the official source.
Official sources
Common questions
Do I need a permit to renovate a leased space?
Usually, if the work is more than cosmetic. Electrical, plumbing, HVAC and structural work, and changes to walls or exits, generally need a building permit even in a leased space. Painting and new flooring often do not, but check with your local permitting office.
Do I need a permit for a business sign?
In many towns, yes. Sign rules usually limit size, lighting and placement, and a permit is often required before you put up a new or larger sign.
What happens if I don’t get a permit?
You can be fined, ordered to stop work, or required to open up or redo work so it can be inspected. Unpermitted work can also cause trouble with insurance or when you sell or lease the space.
Who issues business permits?
Most come from your city or county: the building or permitting office, the planning and zoning office, the fire marshal and the health department. Alcohol and some product permits come from the state.
PolyWise is not a law firm, and this guide is general information, not legal or tax advice. Confirm details with the relevant agency or a professional.