Dayton Building Permits & Inspections: Start Here
If you are remodeling a home, adding a deck or garage, opening a business, replacing structural parts of a roof, installing new electrical or HVAC equipment, demolishing a structure, or starting another construction project inside Dayton, the main local authority is the City of Dayton Division of Building Inspection.
The Building Inspection Division operates from the One Stop Center at 371 W. Second Street, 2nd Floor, Dayton, OH 45402. The main number is 937-333-3883. The department lists normal office hours of Monday-Friday, 8:30 a.m.-4:30 p.m., while the permit counter FAQ lists customer counter hours of 8:30 a.m.-4:00 p.m..
As of November 2026, Dayton’s online permit system is primarily for checking permit status. The City states that permit applications cannot yet be fully submitted through the current online system, so download the proper form and follow the City’s submission instructions.
Dayton Building Department Contact Information
| Official office | City of Dayton Division of Building Inspection |
|---|---|
| Location | One Stop Center, 371 W. Second Street, 2nd Floor, Dayton, OH 45402 |
| Main phone | 937-333-3883 |
| General office hours | Monday-Friday, 8:30 a.m.-4:30 p.m., excluding holidays |
| Permit counter hours | Monday-Friday, 8:30 a.m.-4:00 p.m. |
| Structural inspections | 937-333-3897 |
| Electrical inspections | 937-333-3881 |
| Plumbing / water / gas / sewer inspections | 937-333-3892 |
| HVAC inspections | 937-333-3980 |
| Zoning Administration | 937-333-3904 |
| Fire Prevention | 937-333-4520 |
Limited visitor parking is available on the west side of the building. The City also notes metered parking on Second Street and a paid parking garage across the street.
What Does Dayton Building Inspection Handle?
The Division reviews plans, issues construction permits and inspects work for compliance with applicable building codes. Its services include more than a basic structural building permit.
| Need | Typical City service |
|---|---|
| New building, addition or structural alteration | Building permit, plan review and structural inspections |
| Electrical work | Electrical permit and electrical inspection |
| Heating or air-conditioning work | HVAC/mechanical permit and inspection |
| Plumbing, gas, sewer or water work | Mechanical/trade permit and applicable inspection |
| Fire alarm or suppression system | Separate permit, plans and inspections |
| Demolition | Wrecking permit and demolition inspections |
| Tent or temporary construction structure | Temporary-structure permit and inspection when applicable |
| Business occupancy/change of use | Building review, final approvals and Certificate of Use and Occupancy when required |
| Setbacks, permitted land use, signs or property placement | Zoning Administration |
Step 1: Confirm the Property Is Actually in Dayton
This is one of the easiest mistakes to avoid. Some addresses that use “Dayton” for mailing purposes are located in another municipality or township.
- Open the Montgomery County Auditor property search. Use the official county real-estate system at mcrealestate.org.
- Search by street address. Open the matching parcel rather than relying only on the mailing city.
- Check the tax district. Dayton’s official permitting FAQ says a tax district shown as “Dayton City” confirms city jurisdiction.
- Look at the parcel number if needed. Dayton also states that parcels beginning with R72 indicate Dayton jurisdiction.
- If the record is unclear, call City Engineering at 937-333-7217 before submitting a permit application.
Do You Need a Dayton Building Permit?
A permit is generally required for new buildings, additions, structural modifications, new or modified electrical/plumbing/HVAC systems, fire alarm or suppression systems, and many commercial occupancy projects.
Common work that normally requires approval
- New houses and commercial buildings
- Room additions and building expansions
- Decks requiring structural approval
- Garages above applicable exempt limits
- Structural roof repairs
- Electrical service or wiring alterations
- Plumbing system changes
- Heating, air-conditioning and ventilation work
- Gas piping
- Fire alarms and sprinkler/suppression systems
- Demolition or wrecking
- Commercial change of use or new tenant occupancy where required
Work that may not require a building permit
Dayton specifically identifies painting, papering, tiling, carpeting, cabinets, countertops and similar finish work as examples that normally do not need a building permit.
| Project | Dayton guidance |
|---|---|
| Fence 6 feet high or less | No building permit, but a zoning permit is still required for fences of any height. |
| Fence over 6 feet | Follow building permit requirements in addition to zoning requirements. |
| Detached one-story shed, 200 sq. ft. or less | No residential building permit, but a zoning permit is required. |
| Swimming pool or hot tub | Building permit generally not required, but zoning approval is required. Electrical permits may also apply; in-ground pools require an electrical permit for grounding. |
| Simple new layer of roof shingles | A building permit generally is not required when structural/sheathing repair is not involved, subject to roofing limitations and historic-district requirements. |
| Roof sheathing, rafters or trusses repaired/replaced | Building permit required. |
Which Permit Form Should You Use?
The City maintains separate forms for different types of construction. Starting with the correct application prevents an avoidable resubmittal.
| Application | Use it for | Official form |
|---|---|---|
| Building / Zoning Application | Building projects, additions, alterations, new construction, fire alarm and fire suppression applications where applicable | Building Application PDF |
| Mechanical Application | Electrical, heating/HVAC, plumbing, gas, sewer and water work | Mechanical Application PDF |
| Tent Permit | Temporary tents covered by City requirements | Permit Forms Page |
| Wrecking Permit | Demolition of structures | Permit Forms Page |
How to Apply for a Dayton Building Permit
The City’s current online system should not be confused with a full online application portal. As of 2026, it is primarily available for checking permit status.
- Confirm jurisdiction. Make sure the property is inside Dayton city limits.
- Check zoning first. Review permitted use, setbacks, overlays and other site limitations through Dayton Zoning Administration. For map research, use the City’s official zoning map and code page.
- Choose the correct application. Download the building, mechanical, tent, wrecking or other required form from the official Building Permit Forms page.
- Prepare the drawings. Include the site plan, architectural/structural information and trade schematics that apply to the project.
- Prepare the required plan copies. Dayton currently requires three sets for standard residential and commercial building-permit submissions. Certain separate mechanical, fire alarm and suppression submissions use two sets.
- Submit the package to Building Inspection. The One Stop Center is at 371 W. Second Street, second floor.
- Pay any plan-review amount due at submission. Commercial plan-review charges are collected when plans are submitted.
- Respond to review comments completely. Correct all marked items before resubmitting revised sheets.
- Pay the final permit charges and obtain the permit. Do not begin regulated work before authorization.
- Keep the approved plans and permit information on the job site. Call for each inspection before work becomes concealed.
Plans and Documents Dayton Expects
The April 2026 Building/Zoning application identifies the information that can be required for plan review. Depending on your job, the plan set may need:
- Site plan
- Building-code notes
- Architectural plans
- Structural plan
- Electrical schematic
- HVAC schematic
- Plumbing schematic
- Accessibility information
For new construction, additions and certain occupancy changes, accessibility requirements must also be addressed where applicable.
Commercial projects: Dayton states that the design professional’s signature and seal must appear on commercial plans.
Separate submittals: fire suppression plans with calculations, fire-alarm plans with devices/calculations and kitchen-hood submissions require their applicable drawings and supporting information.
Dayton Building Permit Fees in 2026
Permit cost is not one flat amount. It can depend on project value, construction type, square footage, trade work, zoning charges, state surcharges and occupancy-related requirements.
The City’s Building/Zoning application was revised in April 2026 and publishes the following figures.
| Fee item | Published 2026 guidance |
|---|---|
| Commercial plan review | 0.1% of project value, minimum $37.41, plus applicable 3% State surcharge |
| Minimum building permit fee | $43.64, before applicable State surcharge |
| Project value of $100,000 or more | $1,265.75 plus 0.50% of project costs above $100,000, plus applicable surcharge |
| State surcharge | 3% for applicable commercial permit fees and 1% for applicable residential permit fees |
| Zoning certificate | 0.2% of assumed project value; minimum $93.53 and maximum $10,000 |
| Commercial CUO | $254.15 |
| Residential CUO | $125.45 |
| Special residential damage/nuisance inspection | $62.36 for qualifying 1-, 2- and 3-family properties |
Commercial plan revision fees effective April 1, 2026
| Revision | Additional commercial fee |
|---|---|
| Initial review | No additional revision fee beyond initial plan-review charges |
| 1st revision | No additional fee |
| 2nd revision | $250 |
| 3rd revision | $250 |
| 4th revision | $500 |
| 5th revision | $500 |
| 6th and later revisions | $1,000 each under the City’s published schedule |
After a second revision results in non-approval, Dayton’s 2026 notice requires a meeting with the Chief Building Official and/or Chief Plans Examiner, building owner and design professional before additional revisions are submitted.
Mechanical permit fee formula
The City’s mechanical application lists a different valuation formula for electrical, HVAC, plumbing and related mechanical permits:
- $2,000 or less: $35 permit fee.
- Over $2,000 but below $100,000: $35 plus 1% of the cost above $2,000.
- $100,000 or more: $1,015 plus 0.5% of the cost above $100,000.
The exact amount due can change with the permit type, project details and applicable surcharges. For a project-specific estimate, Dayton directs applicants to Building Inspection.
How Long Does Dayton Plan Review Take?
There is no honest one-size-fits-all approval time. Complexity, staff workload, incomplete drawings and reviews by other City agencies can all affect timing.
Dayton states that Building Inspection strives to review and provide comments within 30 calendar days after application. That is a review goal, not a promise that every permit will be issued within 30 days.
Zoning, Fire, Water Engineering, historic-review, floodplain or other agency requirements can extend the overall timeline.
How to check your permit status
- Open the City’s Online Permit System information page.
- Select Check Permit Status.
- Open the Accela permit search.
- Search using the available permit or project information.
- Review the live status and follow any outstanding City instructions.
The City states that the online permit system is unavailable for nightly maintenance from approximately 2:00 a.m. to 6:00 a.m.
How to Schedule a Dayton Building Inspection
Do not cover structural, electrical, plumbing or HVAC work before the required inspection. Dayton’s instructions warn that concealed work may need to be exposed again if an inspector could not see it at the proper stage.
Inspection requests should generally be made at least 24 hours in advance. Next-workday availability is not guaranteed.
| Inspection type | Phone |
|---|---|
| Structural / building | 937-333-3897 |
| Electrical | 937-333-3881 |
| Plumbing / water / gas / sewer | 937-333-3892 |
| HVAC | 937-333-3980 |
| General permit assistance | 937-333-3883 |
Have this information ready when calling
- Permit number
- Exact project street address
- Type of permitted work
- Inspection stage needed, such as footing, rough, framing or final
- Contact information for the responsible person
Typical construction inspection sequence
The exact inspections depend on the project, but a building can move through stages such as:
- Footing/foundation excavation
- Foundation and waterproofing
- Under-slab plumbing, electrical or HVAC work where applicable
- Concrete floor/slab or crawlspace
- Rough electrical, plumbing and HVAC
- Framing
- Energy/insulation inspection
- Fire-resistance or life-safety inspections when required
- Trade finals
- Final building inspection
The City’s inspection bulletin says the approved job-site plans and permit information must remain available during construction.
Building Codes Used in Dayton in 2026
The City currently identifies these major codes for its building-review work:
| Area | Code listed by Dayton |
|---|---|
| Commercial structures | 2024 Ohio Building Code |
| Residential structures | 2019 Residential Code of Ohio |
| Plumbing | 2024 Ohio Plumbing Code |
| Mechanical | 2024 Ohio Mechanical Code |
| Existing structures | 2024 Ohio Existing Building Code |
| Electrical | 2023 National Electrical Code (NFPA 70) |
| Fire alarm | 2022 NFPA 72 |
| Sprinklers | 2022 NFPA 13 |
| Fire | 2017 Ohio Fire Code |
| Energy efficiency | 2017 International Energy Conservation Code |
Before designing around a specific code provision, verify the current adopted edition on the City of Dayton Building Codes page, because state and local code adoption can change.
Can a Dayton Homeowner Do Their Own Work?
Yes, in some situations.
Dayton states that an owner who occupies or will occupy a single-family residence may perform work covered by the home’s building permit. The owner-occupant can also perform permitted plumbing, electrical and HVAC work if the applicable requirements are met.
However, Dayton requires registered contractors for plumbing, electrical and HVAC work in other situations, including many rental properties, houses intended for rental and duplex/two-family properties.
If you are hiring a trade contractor, verify City registration where applicable. Dayton publishes current contractor registration and bond forms on its Contractor Registration page.
Historic District, Zoning and Site Issues
A building permit does not override zoning or historic-preservation rules.
Before investing heavily in drawings, confirm:
- Permitted land use
- Required setbacks
- Parking requirements
- Accessory-building location
- Sign restrictions
- Historic-district status
- Floodplain requirements
- Any applicable overlay district
Use the official Dayton Zoning Code and Map for initial research, then confirm uncertain requirements with Zoning Administration before construction.
Certificate of Use and Occupancy
A Certificate of Use and Occupancy, often called a CUO, establishes the approved legal use of a building or space.
It can be required for new construction, additions, changes of use, certain remodels and business occupancy situations. For a commercial space, the City’s process commonly requires:
- Required permit applications and plans
- Plan approval
- Permit issuance
- Construction and trade inspections
- Final approvals from applicable agencies
- Final building inspection
- Issuance of the required CUO
Do not assume that completing construction automatically authorizes business occupancy. Confirm the final CUO requirement before opening to customers or employees.
How Long Is a Dayton Permit Valid?
The City’s April 2026 Building/Zoning application states that permits expire one year after the issuance date or last inspection date. Separate City guidance also notes that permits can be affected when approved work remains unstarted, abandoned or inactive for extended periods.
The safest approach is simple: keep the project active, request required inspections on time and contact Building Inspection before a long construction delay.
Frequently Asked Questions
1. Where is the Dayton Ohio Building Department?
The City of Dayton Division of Building Inspection is at the One Stop Center, 371 W. Second Street, 2nd Floor, Dayton, OH 45402. The main phone number is 937-333-3883.
2. What are the Dayton Building Inspection office hours?
The department lists general hours of Monday through Friday, 8:30 a.m. to 4:30 p.m., except holidays. The City’s permit-process FAQ separately lists permit-counter hours as 8:30 a.m. to 4:00 p.m.
3. Can I apply for a Dayton building permit completely online?
Not through the City’s current public system as of 2026. Dayton states that its online permit system is presently limited mainly to permit-status searches. Download the required application from the official forms page and follow the City’s submission instructions.
4. What work usually requires a building permit in Dayton?
New buildings, additions, structural modifications, new or modified electrical/plumbing/HVAC systems, fire alarm and suppression work, demolition and many commercial occupancy projects require permits or related approvals.
5. Does a small shed require a Dayton building permit?
A detached one-story accessory structure of 200 square feet or less generally does not require a residential building permit, but Dayton still requires zoning approval and placement must comply with zoning rules.
6. Does a fence require a permit in Dayton?
A fence six feet high or less does not require a building permit, but Dayton requires a zoning permit for fences of any height. Fences over six feet also need to follow applicable building-permit requirements.
7. How long does Dayton building permit review take?
Dayton says it strives to review an application and provide comments within 30 calendar days. Complex projects, incomplete plans and reviews by other City agencies can take longer.
8. How do I schedule a Dayton building inspection?
Call the appropriate inspection division at least 24 hours before the desired inspection. Structural inspections use 937-333-3897, electrical 937-333-3881, plumbing/water/gas/sewer 937-333-3892 and HVAC 937-333-3980.
9. Can I do permitted work on my own Dayton home?
An owner who occupies or will occupy a single-family home may perform qualifying permitted work. Different rules apply to rental properties, duplexes and trade work completed by contractors, so confirm the situation with Building Inspection before starting.
10. Do I need a Certificate of Occupancy in Dayton?
A Certificate of Use and Occupancy may be required for new buildings, additions, changes of use, certain remodels and commercial occupancy. A business should confirm that all required permits and final inspections are complete before opening.
Before You Start the Project
The easiest Dayton permit experience is usually the one prepared correctly before the application reaches the counter. Confirm the property is in Dayton, check zoning, select the correct permit form, prepare complete plans, understand the expected fees and know which inspections will be required.
Once those details are clear, use the City’s official system for the transaction itself: submit the application, check the live permit record, respond to City comments and schedule inspections. That saves you from repeatedly searching different websites while construction is already underway.