Unincorporated Darke County
Darke County, Ohio
Last verified September 16, 2026
Unincorporated Darke County is the unincorporated portion of Darke County, Ohio — the area outside the limits of any city or town, which does not currently list an online permit database — contact the department directly by phone or email. Use the contact information below to reach the local building department, or the mailing address if the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.
Contact
- Phone
- 937-440-8121
Permit Search
No online permit database on file — contact the department directly by phone or email.
Certificate Holder Mailing Address
Miami County Department of Development (Building Regulations)Miami County Safety Building, 510 W Water St Ste 130
Troy, OH 45373
Use this address when the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.
Additional Notes
Darke County has no residential or commercial building department of its own. Per Ohio Board of Building Standards records, building code enforcement for unincorporated Darke County and its villages (Ansonia, Arcanum, Castine, Gettysburg, Greenville, Ithaca, New Madison, New Weston, Pitsburg, Union City, Versailles, Wayne Lakes, Yorkshire) is contracted to the Miami County Department of Development. Plumbing is handled separately by the Darke County General Health District.
What You Need Before Applying for a Permit
Most building departments ask for the same core package before they'll issue a permit: a completed application naming the property owner and contractor, the contractor's state license number and proof of insurance (general liability, and workers' comp if employees are on the job), a notice of commencement or equivalent recorded filing for larger jobs where the state requires one, and scaled plans or a site plan for anything beyond minor repairs. Roofing, fence, pool, and solar permits typically have their own simplified checklists — Unincorporated Darke County's department (above) can confirm exactly what applies to your project.
Why this matters for insurance: permit history is one of the first things an underwriter or adjuster checks. Unpermitted work — a finished basement, an added bedroom, a rebuilt roof — can complicate a claim or even void coverage for that portion of the loss, and it routinely surfaces during a home inspection. Pulling the right permit up front, and keeping the closed-permit record on file, protects both the property's value and its insurability at resale.