Usually not for the patio itself. Often yes for the wall, the cover, the gas line or the water it sends next door. The answer changes at every city line in this county, so here it is city by city.
In most of Johnson County a paver patio sitting on the ground, carrying nothing but furniture, is not what the building department is worried about. What trips people up is everything attached to it. The seat wall that turned into a retaining wall. The pergola posts. The run of gas out to the fire table. And, in a couple of these cities, the plain fact that you just added a few hundred square feet of surface that water can no longer soak into.
Researched and written September 14, 2026. Codes change, cities reorganize their websites, and the city is always the authority on its own rules — not this page. This is not legal advice.
Read this as a starting point, not as the last word. Where a cell says the city does not publish it, that is the honest answer — it means we could not find it stated on the city's own site, and you should call before you dig.
| Jurisdiction | Patio at grade | Retaining wall | Who to call |
|---|---|---|---|
| Overland Park | No permit for a patio on grade of concrete or brick that does not support a structure. Setbacks still apply. | No permit under 48 inches. Keep 2 ft off a right-of-way line, 1 ft off any other property line. | 913-895-6000 |
| Olathe | Not published. The exempt list lives in Olathe Municipal Code 15.02.140. Patio covers do need a permit. | Handled as an accessory structure permit. Threshold not published on the city site. | 913-971-6200 |
| Lenexa | Not published. Patios are not on the city's list of projects that require a permit, but they are not listed as exempt either. | Permit required at 4 ft and over. Under 4 ft is exempt, still needs a 2 ft setback from property lines. | 913-477-7725 |
| Leawood | Permit territory, but by impervious surface rather than setback. A drainage study or grading plan is required once a project adds 400 sq ft or more of impervious surface. Note the setback side runs the other way: the development ordinance lets an at-grade patio, walkway or driveway extend to the property line. | Permit required over 4 ft. Walls over 4 ft, terraced or not, must be designed for lateral loads. | 913-663-9165 |
| Shawnee | Not published. The city's FAQ covers structural changes, additions and pools but does not address flatwork. | No permit at 4 ft or under. Any height needs one in a right-of-way, drainage easement, floodplain or E/I lot. | 913-742-6010 |
| Prairie Village | Not on either the required or the exempt list — but a separate Public Works drainage permit covers expanding a patio. | Listed as permit-required with no published height exemption — the strictest position in the county. Sealed plans over 4 ft. | 913-385-4604 |
| Unincorporated | Not named on the county's exemption list. The county's own FAQ says new structures require a permit. | Exempt at 4 ft or under, bottom of footing to top of wall, unless supporting a surcharge. | 913-715-2200 |
The clearest rules in the county, and the only city here that addresses a patio in plain words. Overland Park's residential permit exceptions page states that a permit is not required for patios on grade made of concrete or brick that do not support a structure, and that applicable setbacks must still be followed. Concrete pavers are concrete and clay pavers are brick, so a normal paver field reads as covered. Flagstone is not named, so ask. "Do not support a structure" is the other part to watch — the moment posts for a cover land on it, you are into permit territory.
Source: Residential Building Permit Exceptions and Guidance, City of Overland Park. The city publishes a Common Permit Fees page; we are not quoting a figure here because the exceptions page does not attach one to this work.
Olathe's permit pages are organized by project type, and an at-grade patio is not one of them. The city's Building Permit Application Guide points you to Olathe Municipal Code Title 15, section 15.02.140, for the full list of construction that does not require a permit. We were not able to read that section from the city's code host, so we are not going to tell you what is in it.
Sources: Permits & Licenses and Building Permit Application Guide, City of Olathe.
Lenexa rewrote its fence and wall rules in 2023 and the document is unusually specific, which is handy. Patios are the gap. The city's list of remodeling projects that require a permit runs from additions to water heaters and does not include flatwork, and its exempt list covers cosmetic work and landscaping improvements — close, but not an answer.
Sources: UDC Amendment: Fences, Walls, and Retaining Walls (adopted May 16, 2023), Decks, Fences & Sheds and Remodeling Projects, City of Lenexa.
Leawood is the one city here where the patio itself is the permit. The city's permit list includes an entry for a patio tied to impervious surface, handled by Codes Administration, and Leawood's adopted residential code does not carry the patio exemption Overland Park uses. Its exempt list covers retaining walls up to four feet and sidewalks and driveways up to 30 inches above grade outside the right-of-way — and stops there.
The second half matters more. Leawood's code requires that when a project adds 400 or more square feet of impervious surface to a lot, the applicant provide a drainage study or grading plan for the City Engineer. If the addition is up to half the lot's existing impervious surface, that is a grading plan by a Kansas licensed engineer or land surveyor, extending at least 25 feet into the adjacent lots. Above half, add a storm water study addressing the increase and the risk of flooding the neighbors. A patio of any size gets you closer to that line than people expect.
Sources: City Code Chapter IV, Article 9 — Residential Code, Fences Permit Information and Licenses & Permits, City of Leawood.
Shawnee publishes a genuinely useful retaining wall handout, and it is the strictest wall document in the county on where a wall sits rather than how tall it is. On patios, the city's permit FAQ answers sheds, fences, roofs and pools and does not reach flatwork.
Sources: Building Permits & Inspections, the city's Retaining Wall Permit Guidelines, and the Building Permits & Inspections FAQ, City of Shawnee.
Prairie Village is the one to read twice. Its Codes Department publishes a flat list of projects that require a building permit and a short list that do not, and a patio appears on neither. But Public Works runs a second permit that does name it: a Drainage Permit is required if you are constructing a new home, adding an addition, adding a pool, expanding the driveway or patio, or doing any grading beyond a landscape bed. Drainage permits are applied for separately from building permits, so it is easy to get one and miss the other.
Sources: Permits & Inspections, Public Works Permits and the Fence and Retaining Wall and Pergola permit brochures, City of Prairie Village.
If your address is outside a city — Stilwell, and the pockets of county ground south and west of the built-up area — the county's Building Codes department is your office. The county adopted the 2018 International Codes as the Johnson County Code of Regulations for Buildings and Construction, effective July 1, 2020, and publishes the exemption list as a standalone document.
Sources: Building Permits, Code of Regulation for Building and Construction and the county's Building Permit Exemptions document, Johnson County.
A fire pit ring built into a patio is usually not a building permit question. It is a fire code question, and the rules are set by your fire department, with one county-wide layer on top.
Sources: Recreational Fires, City of Overland Park; Fire Pits and Grills, City of Lenexa; Burn Regulations, Johnson County.
This one is not a city rule and it is not optional. Kansas 811 runs the state's one-call system under the Kansas Underground Utility Damage Prevention Act. You file a locate request, the utilities come out and paint and flag their lines, and then you dig. It is free.
Base for a patio goes down six inches deep and more, so this comes up on every job we do. We call it in ourselves before we break ground. If you are doing the work yourself, file it yourself — a struck gas or fiber line is expensive, and the gas one is worse than expensive.
Sources: Request a Locate and FAQs, Kansas 811.
Across a lot of Johnson County the city permit is the easy approval and the homeowners association is the slow one. An HOA architectural review is a private contract matter under your covenants. It is completely separate from any city permit, a city permit does not satisfy it, and the city will not enforce it or waive it for you.
What associations commonly ask for varies, but plan on submitting a drawing showing the patio's shape, dimensions and distance to the property lines, the paver and wall product you intend to use — often an actual sample or the manufacturer's board rather than a photo — and sometimes a grading or drainage note. Review is usually handled by a committee that meets on its own schedule, so allow real calendar time rather than assuming a few days. Some associations also restrict colors, wall block styles, or how close hardscape can come to a common area or a tree easement.
We are happy to put the drawing and the product information together in the form your association asks for, and to handle the submission if that is useful to you. We will tell you what your city requires for your specific address before we hand you a proposal. What we cannot do is promise how your board will vote or how fast it will meet.
The permit itself is rarely what holds a patio up. These are.
Everything above came from the cities' own pages and documents, linked where we have them. Where a city does not publish an answer, this page says so instead of guessing. A wrong threshold in a paragraph like this can cost a homeowner a stop-work order and a wall that has to come apart, and an honest "ask them" is worth more than a confident number that turns out to be from the wrong city.
Codes get amended, cities move their websites, and a code official's reading of your specific lot beats any general rule. Treat this as a map of which questions to ask and who to ask them of. Your city is the authority. This is not legal advice.
Tell us the address and what you are thinking about. We check it against your city and your covenants, and it is in the proposal before you sign anything.