Permitting is the least glamorous part of construction and the most common cause of schedule surprises. Every jurisdiction in the Kansas City metro handles it differently, and a plan that sails through in one city can sit in review for six weeks in the next one over. Here is what we have learned building across the metro for seventeen years.
When you need a permit
The general rule is that anything structural, electrical, plumbing, mechanical or changing the occupancy of a space requires a permit. In practice, that means:
- Always permitted: additions, structural wall removal, new electrical circuits, plumbing relocation, HVAC replacement, roof structure changes, decks over 30 inches above grade, retaining walls over 4 feet, driveway approaches.
- Usually permitted: finishing a basement, replacing a water heater, re-roofing in some jurisdictions, window replacement that changes the opening size.
- Rarely permitted: cosmetic work such as paint, flooring, cabinets in the same location, and countertop replacement.
The most common mistake we see is a homeowner or a contractor deciding a project is "small enough" to skip the permit. Unpermitted structural and electrical work is a disclosure problem when you sell, a coverage problem if there is a fire, and a real risk if an inspection is triggered later by a neighbor complaint. We do not skip permits, even when asked.
Review timelines across the metro
These are typical residential review times we experience, not official published figures. They move with department workload, so treat them as planning ranges rather than guarantees.
| Jurisdiction | Residential review | Commercial review | Notes |
|---|---|---|---|
| Kansas City, MO | 3 – 6 weeks | 5 – 10 weeks | Historic districts add 4 – 8 weeks for preservation review |
| Overland Park, KS | 2 – 5 weeks | 4 – 8 weeks | Stormwater review required for impervious surface changes |
| Leawood, KS | 3 – 6 weeks | 5 – 9 weeks | HOA architectural review runs in parallel, not after |
| Olathe, KS | 2 – 5 weeks | 4 – 8 weeks | Subdivision covenants may add review requirements |
| Lee's Summit, MO | 3 – 5 weeks | 4 – 8 weeks | Historic downtown requires preservation review |
| Independence, MO | 2 – 4 weeks | 4 – 7 weeks | Pre-1978 housing triggers lead-safe documentation |
| Lenexa, KS | 2 – 5 weeks | 4 – 8 weeks | Floodplain and stormwater review for site work |
| Liberty, MO | 2 – 4 weeks | 4 – 7 weeks | Historic square area has additional review |
If your contractor’s schedule assumes a two-week permit turnaround in Kansas City, Missouri, that schedule is fiction. We build the review period into the milestone schedule as a real phase with real duration.
The inspection sequence
Most residential projects follow this order. Commercial projects add fire, health and ADA inspections depending on occupancy.
- Footing inspection before concrete is placed.
- Foundation and waterproofing inspection before backfill.
- Framing and structural inspection before insulation, including shear nailing and beam connections.
- Rough electrical, plumbing and mechanical inspection before drywall.
- Insulation inspection before drywall in energy-code jurisdictions.
- Drywall inspection in some jurisdictions.
- Final inspection covering all trades, plus a certificate of occupancy for commercial and for some residential additions.
Each of those is a hard stop. You cannot insulate before framing passes, and you cannot hang drywall before rough trades pass. A single failed inspection can cost a week if the correction is minor and the re-inspection is scheduled promptly, and considerably longer if the correction requires engineering or a plan revision.
The mistakes that cost the most time
Submitting an incomplete application
Missing a survey, an energy compliance form or a structural letter does not start the review clock, it restarts it. We assemble the full package before submission and confirm it against the jurisdiction’s checklist, item by item.
Ignoring stormwater requirements
Johnson County jurisdictions in particular require stormwater review for projects that change impervious surface area. A new driveway, a larger patio or an addition with a larger roof footprint can trigger a drainage study. Discovering this after design means redesign.
Missing HOA review
In many Johnson County subdivisions, the architectural review committee has its own requirements that are stricter than the city’s. Some HOAs will not allow a project to begin until their approval is issued, and their review can take as long as the city’s. We review the covenants before design, not after.
Changing scope mid-review
Any change to a submitted plan restarts the review in most jurisdictions. This is a strong argument for finalizing design before submitting, which is a real advantage of design-build delivery.
What to keep when the project is done
Ask your contractor for a closeout package containing the approved permit, every inspection card or record, as-built drawings, equipment manuals and warranty registrations. When you sell the house or the building, this package answers the buyer’s inspector in about thirty seconds instead of becoming a negotiation.
“The permit package is not paperwork. It is the record that proves the work was done to code, and it is worth real money at resale.”
Andre Washington, Commercial Project Manager
