If you own property in the unincorporated areas of northern Hamilton County — near Arcadia, Boxley, Strawtown, or along the county’s rural townships — the permitting authority for your deck or patio project is the Hamilton County Plan Commission, not a city building department. This guide explains exactly how the county permit process works, what you need to submit, and how to make sure you’re applying to the right office before you start.
First Step: Confirm Who Has Jurisdiction Over Your Property
This matters before anything else. Hamilton County’s Plan Commission only has jurisdiction over unincorporated areas — properties that lie outside the limits of any city or town.
- Unincorporated rural land near Arcadia, Boxley, Strawtown, or in Jackson, Adams, or Wayne Townships — your permit comes from the Hamilton County Plan Commission.
- Inside the Town of Arcadia limits — the Town of Arcadia has its own building permit process. Check at arcadiaindiana.org or call the town office before assuming county jurisdiction applies.
- Inside City of Noblesville limits — Noblesville Community Development handles permits for properties within city limits.
If you’re not sure which jurisdiction covers your property, contact the Hamilton County Plan Commission at (317) 776-8490 before preparing any documents. Staff can confirm based on your parcel ID or address.
Hamilton County Plan Commission: Contact and Location
| Detail | Information |
| Office | Hamilton County Plan Commission |
| Address | 1 Hamilton County Square, Suite 13, Noblesville, IN 46060 |
| Phone | (317) 776-8490 |
| Fax | (317) 774-2559 |
| Permit Email | planning.permits@hamiltoncounty.in.gov |
| General Email | planning.dept@hamiltoncounty.in.gov |
| Hours | Monday – Friday, 8:00 AM – 4:30 PM (excluding county holidays) |
| Online Portal | Plan Commission Resources page — permit applications, forms, and EZ-Trak inspection tracking |
Does My Deck Project Require a Permit?
Yes. Within the Hamilton County Plan Commission’s jurisdiction, the only projects that do not require a building permit are replacement of windows and doors, interior decorating, exterior painting, and shingle replacement. Every other structural improvement, repair, or addition requires a permit — including new decks, deck additions, and rebuilt decks.
Decks are classified under the Accessory Structure permit type in Hamilton County. All work must comply with the 2020 Indiana Residential Code. Building without a permit triggers a penalty of up to three times the standard fee, depending on the number of offenses.
What to Submit: The Accessory Structure Permit Package
Download the Accessory Structure Permit application from the Plan Commission Resources page and review the full checklist before preparing anything. Any omission will cause delays. Your complete submittal package must include all of the following.
1. Completed ILP / Building Permit Application
The application must be signed and dated. Include the property owner’s full mailing address, phone number, and email, plus the same information for the contractor. Also include the Parcel ID number for the property and a copy of the recorded deed.
2. Site Plan — Two Copies
Submit one hard copy (maximum 11″x17″) and one PDF. The site plan must be drawn to scale and show:
- Outline of the entire property with property line dimensions
- All easements on the parcel
- Location of the septic tank and field, well, and driveway — critical on rural parcels
- Location of all existing site improvements: buildings, mini-barns, parking areas, pools, lakes, etc.
- The proposed deck drawn in its location, with dimensions
- Setback distances from the proposed deck to all property lines
- Hamilton County Surveyor sign-off on drainage approval — this is a separate required step unique to rural county properties
3. Construction Documents — Two Copies
Submit one hard copy and one PDF. Construction drawings must include:
- Foundation plan showing footing sizes and depths, pier footing locations, and all dimensions
- Floor plan showing all framing members with size, spacing, grade, and species of lumber — include direction of span
- Wall sections or building sections showing all building materials, finish grade location, and footing/foundation dimensions and depth below grade
- Building elevations showing all sides of the structure
- Location and height of all required guardrails and handrails per Section R311.5.6.1 and R312 of the 2020 Indiana Residential Code
- Truss design drawings with a registered Indiana architect or engineer’s seal, if manufactured trusses are used
4. Hamilton County Surveyor Drainage Sign-Off
Drainage approval from the Hamilton County Surveyor’s Office is required as part of the site plan. On rural parcels with septic systems and private wells — common across the Arcadia and Strawtown areas — drainage plans can affect where a deck can be placed and how footings are located. Contact the Surveyor’s Office early in your project to avoid delaying permit submission.
Applying Online vs. In Person
Submit electronically by emailing your complete package to planning.permits@hamiltoncounty.in.gov, or apply and track status through the county’s EZ-Trak online system. In-person submission at Suite 13 of the Hamilton County Courthouse is also accepted during regular business hours. Credit card payment is accepted online via Point and Pay; a convenience fee applies to card payments.
Permit Timeline and Validity
| Requirement | Detail |
| Construction must begin within | 6 months of permit issuance — permit expires if not started |
| Accessory structure completion deadline | 9 months from issuance |
| Any plan changes during construction | Addenda to the original drawings must be submitted and approved before changes are made |
| Plan review turnaround (minor changes) | 1–3 business days |
| Occupancy before Certificate of Compliance | Not permitted — using structure before C/O will result in a penalty or fine |
Required Inspections
Schedule all inspections with 24-hour advance notice by calling (317) 776-8490 during business hours, or use EZ-Trak to schedule online. For a deck build, the typical inspection sequence includes:
- Footing inspection — before concrete is poured; verifies diameter, depth, and location relative to approved plans
- Foundation inspection — after footings cure and before framing begins
- Framing inspection — before decking boards are installed; covers ledger attachment, joist sizing, beam connections, and post sizes
- Final inspection — when all work is complete, including railings and stairs; Certificate of Compliance is issued at this stage
If your deck includes electrical work, a separate electrical permit and inspection sequence apply. Confirm all required inspections with the Plan Commission for your specific project scope before construction begins.
Permit Fees
Hamilton County’s permit fees are based on project type and scope. The current fee schedule is available on the Plan Commission website. Call (317) 776-8490 with your project details for a fee estimate. Building without a permit costs 1.5 times the regular fee on the first offense, 2 times on the second, and 3 times on the third — all far more than the cost of pulling the permit upfront.
Rural Property Considerations: What’s Different in Northern Hamilton County
- Septic and well locations are required on your site plan. Unlike suburban lots on city sewer and water, rural parcels commonly have private septic systems and wells. Your site plan must show these, and deck footings must clear the septic field and drain lines.
- Drainage approval is an extra step. The Hamilton County Surveyor sign-off on your drainage plan is a separate coordination step before your site plan is complete. Allow extra time for this on rural parcels with more complex drainage situations.
- Larger lots mean more options, but setbacks still apply. Rural lots are often much larger than suburban ones, but the zoning ordinance still sets minimum setback distances from property lines. Confirm setback requirements for your specific zoning district with the Plan Commission before finalizing your deck footprint.
- Flood zone awareness. Several areas near White River and Morse Reservoir in northern Hamilton County have FEMA-designated flood zones. If your property is in or near a flood hazard area, additional documentation or elevation requirements may apply. Check your parcel’s flood status before submitting.
Quick Reference: Hamilton County Deck Permit Checklist
- Confirm your property is in unincorporated Hamilton County (not inside Arcadia town limits or another municipality)
- Obtain your parcel ID number and a copy of your recorded deed
- Check for flood zone designation on your parcel
- Contact the Hamilton County Surveyor for drainage sign-off before completing your site plan
- Prepare site plan (to scale, 11″x17″ max) showing all required elements including septic, well, driveway, all easements, and setbacks
- Prepare construction documents showing foundation plan, floor plan, wall sections, building elevations, and all guardrail/handrail locations
- Complete and sign the Accessory Structure / ILP application
- Submit complete package (hard copy + PDF of each document) by email, EZ-Trak, or in person at Suite 13, 1 Hamilton County Square
- Pay permit fee; confirm all trade permits (electrical, etc.) if applicable
- Begin construction within 6 months of permit issuance
- Schedule footing inspection before pouring concrete — 24-hour notice required
- Schedule framing, foundation, and final inspections per the approved permit
- Do not use the deck until the Certificate of Compliance is issued
Wondering how the county permit process compares to the requirements homeowners face inside incorporated towns in the greater Indianapolis area? Our overview of what the deck permit process looks like in Lafayette walks through a similar framework from an incorporated-city perspective.
If you’re still in the early design phase and deciding between a wood deck and a paved patio surface for your rural property, our breakdown of how stamped concrete and pavers compare for outdoor living spaces in Indiana covers the tradeoffs worth thinking through before you commit to a material.
Planning a Deck or Patio in Northern Hamilton County?
Patio Contractors Indianapolis builds decks and patios throughout the Indianapolis metro and surrounding Hamilton County communities. Call us at (463) 466-5870 to talk through your project.