Johnson County Guides
Updated September 2026
Walls, wiring, plumbing, structure, additions, decks, and egress windows need a permit almost everywhere in Johnson County. Paint, flooring, and cabinet swaps usually don’t. Here’s the line, city by city, and what happens on the schedule.
9 min read
Written by Mike Schwartz, Built by Design | Published May 4, 2026
Almost every remodel that changes walls, wiring, plumbing, structure, or the footprint of a house needs a building permit in Johnson County, and the review and inspections that come with it sit on the construction schedule whether or not anyone planned for them. This guide answers the questions homeowners actually ask: what needs a permit and what usually doesn't, who pulls it, how long it takes, what the inspections are, and where to apply for your address.
Start with the property's actual jurisdiction. A mailing address or a neighborhood name doesn't decide which department reviews the project. Parkville is in Missouri and has a separate path from the Kansas cities. The links below were checked on September 28, 2026; each city confirms the current requirements for a specific address and scope.
The permit path is one step in a remodel schedule. See how long a whole-home remodel takes for where review and inspections land, and how to plan a basement remodel in Johnson County for the most common permitted project.
Johnson County cities adopt the International Residential Code with local amendments. The code requires a permit to construct, enlarge, alter, repair, move, or change the occupancy of a building, and it lists the work that's exempt. The table below is the practical version for the remodels BBD sees most. Treat it as the starting point and confirm with your city, because amendments differ and some cities require permits for items the model code exempts.
| Work | Permit? | Why |
|---|---|---|
| Finishing a basement (new walls, outlets, lighting, any plumbing) | Yes | Framing, electrical, and plumbing are all permitted work; a bedroom adds egress review |
| Kitchen remodel that moves the sink, range, or a wall | Yes | Plumbing, electrical, and possibly structural changes |
| Kitchen refresh: new cabinets in the same layout, counters, backsplash | Usually no | Finish work is generally exempt when no services move; confirm if you add circuits |
| Bathroom remodel that moves fixtures or adds a shower | Yes | Plumbing and electrical; waterproofing is inspected |
| Like-for-like fixture swap (faucet, toilet, vanity in place) | Usually no | Repair and replacement without changing the system |
| Any addition, including a second story | Yes | Structure, foundation, roof, energy, and zoning setbacks |
| Removing or opening a wall | Yes if load-bearing; often yes regardless | Structural review; many cities want to see any wall change |
| Egress window and window well | Yes | Cuts the foundation; sizes are checked |
| Deck | Yes above a low height or size threshold | The model code exempts only small, low decks; most cities review decks |
| Electrical panel or service upgrade | Yes | Electrical permit and inspection |
| Water heater or furnace replacement | Yes in most cities | Mechanical permit; check your city |
| Paint, flooring, trim, interior doors | No | Finish work |
See also: ICC: IRC Section R105, Permits (including R105.2 work exempt from permit)
In practice the contractor pulls the permit. In Johnson County that requires a county contractor license: the Johnson County Contractor Licensing Program licenses contractors for work in the participating cities, and the city checks the license when the permit is issued. Some cities let an owner-occupant pull a permit for their own home; ask before assuming, and understand that the permit holder is the person the inspector calls. A remodeling permit application usually asks for a description of the work, a floor plan showing existing and proposed conditions, and, depending on scope, electrical and plumbing layouts, structural details or sealed drawings for any beam or opening, and energy details for additions. Shawnee's basement handout, for example, asks for the remodeled areas and the unchanged areas, the use of each room, and existing features like stairs, windows, and mechanical equipment. Olathe's guide says when sealed plans are required. The cleaner the drawing, the shorter the review.
Inspections are the reason a permit belongs on the schedule and not just in the file. Each one has to pass before the next trade can cover the work. For a typical interior remodel or basement finish the sequence is: framing (once walls are up), rough electrical, rough plumbing, and rough mechanical (before insulation and drywall), insulation, and a final inspection after finishes. Additions add footing and foundation inspections before framing and an energy inspection. Some cities inspect drywall fastening; some combine rough inspections into one visit. In BBD's recorded basement schedules, framing and rough-ins land in weeks 3 to 5 of construction and drywall follows in weeks 6 to 8. A failed rough inspection or a slow reinspection stretches that window, which is why the inspection dates get scheduled the week the rough-in starts rather than the day it finishes.
| Inspection | When | What the inspector checks |
|---|---|---|
| Footing and foundation (additions) | Before concrete and before backfill | Depth, reinforcement, drainage |
| Framing | Walls and headers up, before wiring | Structure, headers, fire blocking, egress openings |
| Rough electrical, plumbing, mechanical | Before insulation and drywall | Wire sizes and boxes, drain slope and venting, duct routes, GFCI locations |
| Insulation | Before drywall | R-values, air sealing, vapor retarder |
| Final | Finishes complete | Fixtures, outlets, smoke and CO alarms, egress, handrails, ventilation |
See also: Why remodels take longer than planned, and what prevents it
The short-term risk is a stop-work order when a neighbor or an inspector on another job notices, followed by a permit at a higher fee and, sometimes, opening finished walls so the work can be inspected. The longer-term risks are the ones people don't think about: a homeowner's insurance claim on unpermitted electrical or plumbing can be contested; an appraiser may not count unpermitted square footage; and the Kansas seller's disclosure asks about work done without permits, so an unpermitted basement finish becomes a negotiation at sale. Buyers' inspectors look for it. A contractor who offers to skip the permit is also telling you the work won't be inspected. For plumbing, wiring, structure, and egress, the inspection is the second set of eyes you're paying for.
These are the departments that review residential remodels in the six cities BBD works in most, with the question to settle for your address. Links were checked on September 28, 2026. Requirements change, so confirm before scheduling work that depends on a permit.
| City | Department | The question to settle for your address |
|---|---|---|
| Overland Park, KS | Building and Construction | Which permit guidance and inspections apply to this address and proposed scope? |
| Leawood, KS | Code Services and Building Permits | Which drawings and reviews should accompany an interior remodel or addition application? For additions, ask about the June 2025 street-tree protections and stormwater requirements. |
| Lenexa, KS | Remodeling Projects (residential construction) | Which plan details, contractor registrations, and inspections does this remodel need? Lenexa publishes basement-finishing and emergency-escape guides. |
| Olathe, KS | Building Permit Application Guide | Which residential application fits the project, and are sealed plans required? Interior remodels and additions are separate categories. |
| Shawnee, KS | Community Development and Building Permits | Which basement-finish or roofed-addition guidelines and inspections apply? Draw remodeled and unchanged areas. |
| Parkville, MO | Development Permits | Is the property inside city limits, and do site, zoning, or architectural reviews apply? Only portions of some subdivisions are inside the city. |
Built by Design reviews the permit path during planning, not after the contract. The first in-home visit establishes the jurisdiction and the scope; the written scope lists the permits the project needs; BBD prepares the drawings the city asks for, applies as the licensed contractor, and schedules each inspection as the trade reaches it. Inspection dates go on the schedule you see, so a rough-in inspection isn't a surprise pause. That's the same path on every documented project on this site, from a 9-week basement to a 16-week addition.
Built by Design meets homeowners at the home, writes one scope before finishes are chosen, and builds with the same trade partners named in the case studies above.
FAQAnswers, by design
The permit questions homeowners ask across Johnson County and Parkville, answered from the model code the cities adopt, the six city departments, and how BBD runs the process. Each city confirms what applies to your address.
Yes. Adding walls, outlets, lighting circuits, plumbing, or a bedroom triggers a building permit and inspections in every Johnson County city, and in Parkville on the Missouri side. Paint and flooring alone do not. Overland Park’s Building and Construction page and Olathe’s Building Permit Application Guide list the drawings each wants.
If the sink, range, tub, shower, or toilet moves, or a wall opens, or circuits are added, yes. New cabinets in the same layout with new counters and a backsplash are usually exempt finish work. When in doubt, describe the work to the city; the answer is quick and free.
Plan review time varies by city, by scope, and by season. A basement finish with clean drawings is typically faster than an addition that needs structural and energy review. Ask the department when you apply, and put the answer on the schedule; BBD does this during planning so review time is counted before a start date is promised.
The contractor, in almost every case. Johnson County licenses contractors through a county program that participating cities check when a permit is issued. Some cities allow an owner-occupant to pull a permit on their own home; the permit holder is the person responsible for inspections, so ask before agreeing to be that person.
Framing; rough electrical, plumbing, and mechanical before insulation and drywall; insulation; and a final after finishes. Additions add footing and foundation inspections before framing. Each one must pass before the next trade covers the work, which is why inspection dates belong on the construction schedule.
A stop-work order and a permit at a higher fee in the short term, sometimes with finished walls opened for inspection. Longer term, unpermitted electrical or plumbing can complicate an insurance claim, an appraiser may not count the space, and the Kansas seller’s disclosure asks about unpermitted work, so it becomes a negotiation at sale.
No. Parkville is in Missouri and reviews projects through its Development Permits process, with Community Development handling zoning, building safety, and floodplain management inside city limits. Confirm the parcel is inside the city first; only portions of some subdivisions are.
Keep planning with these related guides.
Basement Planning
Most Johnson County basement finishes need a permit, ceiling height and egress are the two code questions that shape the plan, and BBD basements have run $80,000 to $550,000 and 9 to 16 weeks of construction. Start here.
11 min read
Whole-Home Remodeling
Two clocks run on every remodel: the months of design, selections, and permits before the first hammer, and the 9 to 16 weeks of construction BBD’s recorded projects took. Here’s what happens in each phase, what can overlap, and why BBD’s whole-home projects start at $400,000.
9 min read
Design-Build Process
Fifteen questions, what a good answer sounds like, and the short brief to bring to the first meeting. Written for homeowners in Johnson County who want fewer surprises once the walls are open.
11 min read
