If you are finishing a basement, adding space or building a detached garage in Columbus, plan the insurance update alongside the permit. Each project changes what your policy needs to cover. The city’s Building and Zoning Services (BZS) pages explain the permit side; this guide covers the insurance side.
Before you build
BZS’s residential plans page lists what is needed for new construction and alterations on 1-, 2- and 3-family homes. New accessory buildings or driveway changes may also need residential zoning clearance. Applications run through the online portal.
After you build
| Project | Coverage to review |
|---|---|
| Addition or finished basement | Dwelling coverage and water backup |
| Detached garage or shed | Other structures limit |
| New pool or trampoline | Personal liability |
| Rental unit | Landlord coverage; see landlord vs homeowners |
Tell your insurer when work is finished, not at renewal. If a loss happens before you update, an addition may be underinsured.
During construction
Ask whether your policy covers materials stored on site and whether the contractor carries liability insurance. Keep permits and final inspection records; they help with future quotes.
Duplexes and triplexes
Columbus has many small multi-family buildings. If you live in one unit, ask about lost rent and liability for tenants.
Next step
See the Ohio guide and our Cleveland and Cincinnati pages. Then call for a free quote. HomeInsurerQuotes.org connects callers with a licensed insurance agent; carriers, pricing and eligibility vary, and not all callers qualify.
By phone
What happens when you call
A conversation lets the agent ask about your specific home instead of relying on a generic online estimate. There are no online forms to fill out.
Describe your home
Share the address, size, age, construction, and roof or system updates. You do not need every detail to start.
Talk through coverage
Explain what you want covered and ask about limits, deductibles, and exclusions that apply to your property.
Compare and decide
Ask for the written quote terms and compare them before deciding. A call or a quote does not start coverage.
Free Home Insurance Quote
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Sources and how this page was checked
Page updatedThis page is general information written from the public sources below. It has not been reviewed by an insurance company, attorney or licensed agent for your situation. Your policy form, endorsements, insurer and state rules decide what is covered.
Sources
- NAIC — Homeowners insurance consumer informationRetrieved and reviewed October 14, 2026 for general consumer information. The page did not verify the specific HO-3/HO-5 form mapping and is not cited for that distinction.
- City of Columbus — 1, 2 and 3 Family Residential PlansChecked 2026-10-19: Web search on October 19, 2026 cited this official page; excerpts describe plan and document requirements for new construction and alterations to 1-, 2- and 3-family dwellings. Direct retrieval was blocked by a private-address network restriction.
- City of Columbus — Residential Zoning ClearanceChecked 2026-10-19: Web search on October 19, 2026 cited this page; excerpts describe zoning review for projects such as new accessory structures or driveway expansions.
- City of Columbus — Online Portal (Citizen Access)Checked 2026-10-19: Web search on October 19, 2026 cited this portal for applications, tracking and inspections; portal functions were not tested.
Before you rely on this page
- Read your declarations page, policy form and every endorsement; they control over any summary.
- Ask the insurer or agent to confirm limits, deductibles and exclusions in writing before you buy or cancel coverage.
- For state rules, deadlines or complaints, check your state insurance department directly.