On this page 6
§ 02
When a permit is required
Permit triggers and exempt work for Mason
Permits are required before work begins. Commonly required for: basement finishes, bathrooms, decks, electrical work, fireplaces, gazebos, garages, hot tubs, remodels and additions, retaining walls over 30 inches, sheds, pools, porch or patio enclosures, solar work.
Cabinets
Carpet
Gutters and downspouts
Non-structural repairs and maintenance
Patio or pavers at ground level
Play or swing structure
Roof shingles replacement
Siding
Swing set
Tile flooring
- Exempt Cabinets
- Exempt Carpet
- Exempt Gutters and downspouts
- Exempt Non-structural repairs and maintenance
- Exempt Patio or pavers at ground level
- Exempt Play or swing structure
- Exempt Roof shingles replacement
- Exempt Siding
- Exempt Swing set
- Exempt Tile flooring
Required documents
- Plan or drawing needed for permit review
- Additional project-specific materials vary by permit type and zoning path
- Building code
- Ohio residential and commercial code administration; plumbing through Warren County Health Department
- Permit validity
- Work must commence within 12 months of plan approval. One 12-month extension may be granted if requested at least 10 days before expiration. Permit becomes invalid if work is delayed or suspended for more than 6 months after the last recorded inspection unless extensions are granted.
- Contractor requirements
- State-licensed trades still apply. No Mason-specific general contractor license requirement found.
§ 03
Application process
Typical processing: Timing varies by application type and review path; no single citywide turnaround posted
- 01 Confirm zoning status and whether a zoning certificate or planning entitlement is needed first.
- 02 Submit the appropriate permit or application through the Mason Permit and Application Portal.
- 03 Upload plan or drawing materials; Mason requires a plan or drawing so staff can review the project.
- 04 Obtain any related outside approvals, including Warren County plumbing permits where plumbing is involved.
- 05 Proceed through city review and issuance, then inspections and final approval or certificate of occupancy as applicable.
Typical processing time: Timing varies by application type and review path; no single citywide turnaround posted
§ 04
Fee schedule
Mason building permit fees
Fee type
Amount
01
Minimum permit fee
Zoning Certificate $65; many miscellaneous permits $100 plus applicable BBS fee
02
Plan check fee
Commercial plan review fees listed separately; expedited review doubles the building fee plus $690 engineering site plan review
03
Permit fee formula
Mixed formulas using area, construction cost, occupancy multipliers, certificate of occupancy fees, and BBS percentages
04
Reinspection fee
$95 per occurrence
05
Penalty (no permit)
Work started without permit doubles the base fee; overtime inspection fee is $95 per hour with 4-hour minimum
Temporary certificates of occupancy require cashier's checks and separate deposit checks. BBS fees are added at 1% residential and 3% commercial or multi-family.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- 513-229-8520 (phone)
- Inspection hours
- Building department main contact line 513-229-8520
§ 06
Frequently asked
Common questions about Mason permits
01 Do I need a building permit in Mason, OH? ▸
Permits are required before work begins. Commonly required for: basement finishes, bathrooms, decks, electrical work, fireplaces, gazebos, garages, hot tubs, remodels and additions, retaining walls over 30 inches, sheds, pools, porch or patio enclosures, solar work.
02 How much does a building permit cost in Mason, OH? ▸
Building permit fees in Mason, OH are set by the local building department and vary by project type and valuation. The minimum permit fee is Zoning Certificate $65; many miscellaneous permits $100 plus applicable BBS fee. Fees are calculated as: Mixed formulas using area, construction cost, occupancy multipliers, certificate of occupancy fees, and BBS percentages. Plan check fee: Commercial plan review fees listed separately; expedited review doubles the building fee plus $690 engineering site plan review.
03 How do I apply for a building permit in Mason, OH? ▸
To apply for a building permit in Mason, OH, follow these steps: 1. Confirm zoning status and whether a zoning certificate or planning entitlement is needed first. 2. Submit the appropriate permit or application through the Mason Permit and Application Portal. 3. Upload plan or drawing materials; Mason requires a plan or drawing so staff can review the project. 4. Obtain any related outside approvals, including Warren County plumbing permits where plumbing is involved. 5. Proceed through city review and issuance, then inspections and final approval or certificate of occupancy as applicable.
04 How long does it take to get a building permit in Mason, OH? ▸
Building permit processing times in Mason, OH typically run Timing varies by application type and review path; no single citywide turnaround posted. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in Mason, OH? ▸
Not all construction work requires a permit in Mason, OH. The following work is generally exempt: Cabinets; Carpet; Gutters and downspouts; Non-structural repairs and maintenance; Patio or pavers at ground level; Play or swing structure; Roof shingles replacement; Siding; Swing set; Tile flooring. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in Mason, OH? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Mason, OH via: 513-229-8520.
last verified April 2026
source Mason Engineering, Building and Planning ↗
entry id permits/ohio/warren/mason
Educational reference. Permit rules and fees change — confirm current requirements directly with Mason Engineering, Building and Planning before applying. Jaspector is not legal advice.