Lawrence is an independent city inside Marion County, which means it runs its own building department and permit process. If your property is within Lawrence city limits, you do not go through the Indianapolis Department of Business and Neighborhood Services (BNS) for your structural building permit. You go through the City of Lawrence Department of Public Works instead.
This guide covers everything you need to know before building a deck in Lawrence: when a permit is required, what it costs, what plans to submit, and how inspections work.
Does Your Deck Need a Permit?
Under the Lawrence Municipal Code (Section 2-1-1-9), a building permit is required for any deck that meets either of these conditions:
- The deck is 200 square feet or larger in floor area
- The deck is more than 30 inches above grade at any point
If your planned deck is under 200 square feet, 30 inches or less above the ground, not attached to the house, and does not serve a required exit door, you are exempt from the permit requirement. On-grade patios, sidewalks, and driveways on private property are also exempt.
Important: You May Need Two Permits
Because Lawrence sits inside Marion County, most deck projects actually require two separate approvals:
- A structural building permit from the City of Lawrence Department of Public Works
- An Improvement Location Permit (ILP) from the Indianapolis/Marion County Department of Business and Neighborhood Services
The ILP confirms your project meets county zoning and setback requirements. You can apply for it through the Indy.gov residential development permits page. Make sure both permits are in hand before starting construction.
Where to Apply for Your Lawrence Deck Permit
You can apply online or visit the permits window in person. Here is the contact information for the City of Lawrence Building Department:
| Detail | Information |
|---|---|
| Office | City of Lawrence Department of Public Works |
| Address | 9001 E. 59th Street, Suite 205, Lawrence, IN 46216 |
| Phone | (317) 545-8787 |
| permits@cityoflawrence.org | |
| Hours | Mon, Tue, Thu, Fri: 8:00 AM – 4:00 PM | Wed: 10:00 AM – 4:00 PM |
| Online Portal | Apply & Pay for Permits (Tyler eSuite) |
| Website | cityoflawrence.org/building-department |
Note: Wednesday hours start later than the rest of the week. If you plan to visit the office, keep that 10:00 AM opening in mind.
How Much Does a Deck Permit Cost?
The City of Lawrence charges a flat fee based on the type of project. For a new residential deck exceeding 200 square feet or more than 30 inches above grade, the permit fee is $75. Here is how that fits alongside other common residential fees:
| Permit Type | Fee |
|---|---|
| New Deck (over 200 sq ft or 30″ above grade) | $75 |
| Electrical – Remodel | $75 |
| Re-Roofing | $75 |
| Accelerated Inspection (same-day) | $75 (residential) |
| Re-Inspection Fee | $75 |
| In-House Plan Review | $75 |
You can view the full residential fee schedule on the Lawrence Building Department website.
What Plans Do You Need to Submit?
Lawrence requires detailed construction drawings for every deck permit. Email your plans and supporting documents to permits@cityoflawrence.org for review. Allow up to 15 business days for plan review. Your submission should include:
- Site plan – showing the deck’s location on the lot relative to property lines, the house, and other structures
- Construction plans – drawn to scale with dimensions
- Elevation drawings – showing height above grade on all sides
- Framing plan – joist layout, beam placement, and post locations
- Ledger details – how the deck attaches to the house, including flashing
- Footing details – diameter, depth (minimum 30 inches in Lawrence), and reinforcement
- Stair and guard details – rise, run, railing height, and baluster spacing
Heads up: The Lawrence Building Department notes that plans generated by home-center design software are rarely detailed enough for review and will usually be returned. Take the time to produce thorough, project-specific drawings.
Contractor Registration in Lawrence
If you are hiring a contractor, they must be registered with the City of Lawrence before pulling a permit. Registration costs $150 and requires proof of general liability insurance. However, contractors who already hold a valid license from the City of Indianapolis or the State of Indiana can register for free by showing proof of that license.
If you are a homeowner planning to do the work yourself, you can apply as an owner-builder. The city provides guides on the Building Department page explaining the different owner-builder types and the responsibilities involved.
Inspections: What to Expect
Lawrence requires two inspections for a typical deck project:
1. Footing Inspection
This happens after you dig your footing holes but before you pour concrete. The inspector will check that holes are dug to the correct depth (at least 30 inches below grade), loose material and water are removed, and reinforcement is in place if required. Have your approved plans and permit card on-site.
2. Final Inspection
This takes place once all construction is finished. The inspector verifies that stairs, handrails, and guards are installed and match the approved plans. If you used composite decking, have the manufacturer’s installation instructions available on-site along with your plans and permit card.
Scheduling an Inspection
Request inspections by calling (317) 545-8787 or emailing inspections@cityoflawrence.org. You need to give at least 48 hours (two business days) of notice. If you request a same-day inspection without the required notice, the city charges an accelerated inspection fee of $75 for residential projects.
Key Code Requirements for Lawrence Decks
Lawrence follows the 2020 Indiana Residential Code. Here are a few requirements that come up on nearly every deck project:
| Requirement | Detail |
|---|---|
| Footing depth | Minimum 30 inches below finished grade (frost line) |
| Footing diameter | 6″ minimum for 4×4 posts; 8″ or larger for posts bigger than 4×4 |
| Stair rise | Maximum 8¼ inches per step |
| Stair tread depth | Minimum 9 inches |
| Stair width | Minimum 36″ above handrail, 31½” below handrail |
| Open risers | Allowed, but a 4″ sphere cannot pass through the gap |
| Fasteners | Hot-dipped galvanized, stainless steel, or polymer-coated screws |
| Lumber | Pressure-treated or naturally decay-resistant (redwood, cedar) |
| Ledger attachment | Must be secured to the dwelling with metal flashing at top and caulked sides |
Call Before You Dig
Indiana law requires you to contact 811 at least 72 hours before digging any footing holes. This free service marks underground utility lines on your property so you can dig safely. You can call 811 or visit call811.com to submit a request online.
How Lawrence Differs from the Indianapolis/Marion County Process
Because Lawrence is an excluded city within Marion County, there are a few key differences compared to permitting through Indianapolis BNS:
- Your structural permit comes from the City of Lawrence, not Indy BNS.
- Contractors must register directly with Lawrence (or show an existing Indy/State license).
- Plan review and inspections are handled by Lawrence staff, not Marion County inspectors.
- You still need the Marion County Improvement Location Permit for zoning compliance.
If you are comparing this process with how things work in a neighboring county, our guide on submitting deck and patio plans in Hendricks County breaks down that area’s requirements side by side.
Planning Ahead: Enclosures and Future Changes
If you think you might want to convert your deck into a screened porch or enclosed room down the road, mention it now. The Lawrence Building Department reviews deck plans with the assumption the structure will remain an open deck permanently. Footing sizes, setbacks, and structural supports for enclosed porches are different, so designing for the future from the start can save you significant cost and hassle later.
A Quick Note on Decking Materials
If you plan to use composite or manufactured decking, make sure the product has a current evaluation report (sometimes called an NER or ESR). The Lawrence Building Department will not approve decking materials that lack this documentation. Ask your supplier for a copy before you purchase. Also keep in mind that some composite boards are approved for the deck surface but not for stair treads, so double-check before you build.
Choosing the right material for central Indiana’s climate is a big decision. If you are weighing options like composite versus pressure-treated lumber, take a look at our comparison of how different outdoor surface materials perform in Indiana yards for more context on durability and maintenance.
Permit Timeline at a Glance
| Step | Estimated Timeframe |
|---|---|
| Submit plans to Lawrence DPW | Day 1 |
| Plan review | Up to 15 business days |
| Apply for ILP through Marion County | Concurrent with plan review |
| Call 811 before digging | At least 72 hours before excavation |
| Footing inspection | Schedule 48 hours in advance |
| Final inspection | Schedule 48 hours in advance after completion |
Keep in mind that an abandoned application expires after 180 days if you have not pursued it in good faith or received your permit.
For property-specific zoning questions, including setback distances and lot coverage, you can check the City of Lawrence’s GIS mapping tool or contact the Department of Public Works directly.
If your property falls within Plainfield or unincorporated Hendricks County instead, we have a separate walkthrough covering zoning rules for outdoor structures in the Plainfield area that may be helpful.
Need Help With Your Lawrence Deck Project?
Platinum Deck and Patio builds custom decks across the Indianapolis metro, including Lawrence. From permits to the final inspection, we handle every step so you can focus on enjoying your new outdoor space. Call us at (463) 466-5870 or visit patiocontractorsindianapolis.com to get started.