Lenexa, KS Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- R-1/RP-1 setbacks
- 30 feet streets, 20 feet rear, 7 feet other
- AG setbacks
- 50 feet streets, rear and other
- RP-3 setbacks
- 25 feet streets, 20 feet rear, 7 feet other
- Side street lots (R-1)
- 20 feet from side streets
- Parkway street setback
- 50 feet from the right-of-way line
- Roof eave projection
- 2 feet maximum beyond the wall
- Measured to
- Foundation of the structure
Summary
Under the City of Lenexa, Kansas property development schedule, an R-1/RP-1 lot needs a 30 foot street setback, a 20 foot rear setback and a 7 foot setback on the other sides. AG lots need 50 feet on every side, and RP-3 lots need 25, 20 and 7. Setbacks are measured to the foundation.
Zoning District Minimum Lot Area (sf) Maximum Density (UPA) Minimum Lot Width (ft) Minimum Setbacks (ft) Maximum Height (ft) Minimum Open Space (% of Lot)
Streets Rear Other AG 20 Acres 1.0/20Ac 300 50 50 50 351 90 RE/RP-E 43,560 1.0 200 502 252 252 35 75 R-1/RP-1 8,000 3.5 703 304 20 7 35 60 RP-2 5,0005 8.0 807 25 20 7 35 60 RP-3 3,630 12.0 - 25 20 7 35 60 RP-4 2,723 16.0 - 20 20 7 35 60
RP-5 1,210 36.06 - 30 20 7 48 40 ... 2 50 feet for perimeter streets; 35 feet for internal streets. ... 4 20 feet from side streets. ... ... 7. Setbacks: ... Setbacks refer to the unobstructed, unoccupied open space between a structure and the property line of the lot on which the structure is located. Setbacks shall be measured as the minimum horizontal distance between a property line and the foundation of the structure, except as specifically provided otherwise in this Article.
Full Breakdown
Section 4-1-B-26-A of the Lenexa City Code publishes the residential schedule with three setback columns: Streets, Rear and Other. The rows read as follows. AG requires 50 feet in all three columns. RE/RP-E requires 50 feet on streets (50 feet for perimeter streets, 35 feet for internal streets) and 25 feet rear and other. R-1/RP-1 requires 30 feet on streets, 20 rear and 7 other, with 20 feet from side streets. RP-2 and RP-3 require 25, 20 and 7. RP-4 requires 20, 20 and 7. RP-5 requires 30, 20 and 7. Maximum heights run 35 feet in most districts and 48 feet in RP-5.
The nonresidential schedule uses two columns, Streets and Other. NP-O requires 30 and 15 feet, CP-O, CP-1 and CP-2 require 30 and 30, CP-3 and CP-4 require 50 and 50, HBD requires 10 and 10, and BP-1 and BP-2 require 50 on streets and 30 other. The schedules are a reference summary, and where they conflict with the district regulations in Sections 4-1-B-4 through 4-1-B-21 or the planned development regulations in Section 4-1-B-27, the district and planned development regulations prevail.
Section 4-1-B-26-B-7 says setbacks are measured as the minimum horizontal distance between a property line and the foundation of the structure. Listed features can extend into a required setback: awnings, balconies, bay windows and chimneys up to 3 feet but no closer than 2 feet to the property line, roof eaves up to 2 feet beyond the wall, window wells up to 4 feet, decks, porches and patios no more than 18 inches above grade up to 3 feet, and unenclosed steps up to 5 feet into a front or rear setback. Section 4-1-B-26-C-1 adds street setbacks from the right-of-way line: Parkways 50 feet, Renner Boulevard 70 feet, Arterials 25 feet and Freeway 100 feet.
Violations & Fines
No building permit or development approval is issued for a lot that fails the minimum lot size requirements, with exceptions in Section 4-1-B-26-B-2. No permanent structure can be placed in any easement under Section 4-1-B-26-B-7-d. The special street setbacks in Section 4-1-B-26-C-1 can be modified only through the planned development regulations of Section 4-1-B-27.
Frequently Asked Questions
What is the minimum side yard setback for a Lenexa R-1 lot?
How far can a deck or patio extend into a Lenexa setback?
Are there larger setbacks along major streets in Lenexa?
Which controls if the schedule and the district rules disagree?
Can I put an air conditioner in a Lenexa side or rear setback?
Sources & Official References
Other rules in Lenexa
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Setback Rules in Nearby Cities
How other cities in Johnson County handle setback rules.