Kansas Senate Bill 418 took effect July 1, 2026. Many qualifying homes, duplexes, small townhome groups and accessory dwelling units can now be approved without a planning commission hearing. One short paragraph in the law leaves private restrictive covenants and homeowners association rules fully in force. In established Johnson County neighborhoods, that paragraph does a lot of work. It means the papers tied to a lot often say more about what can go up next door than the city's zoning map does.
For a buyer, this changes which documents get read closely. The exceptions list in a title commitment shows the recorded documents attached to a property, and that list is where the review should start. The same street can hold very different protection depending on which declaration, if any, covers it.
What the Law Took Off the Table for Neighbors
Under SB 418, a complete application for a qualifying by-right project is deemed approved unless the city denies it within 30 days. The window is 60 days when a subdivision plat is involved and 90 days for plats of more than 40 homes. The statute now defines a duplex as a semi-detached single-family home. It also allows townhouse projects of up to 12 attached units to qualify.
The Johnson County Post's July 16 explainer describes two changes that matter most to anyone living nearby. Neighbors may no longer need to be notified in writing about pending single-family developments. The right to file a protest petition against projects with single-family homes is also gone. Steve Horner, a senior assistant city attorney for Overland Park, gave a local example. Neighbors filed a protest petition against Riva Ridge, a seven-home project approved near 127th Street and Nall Avenue. They could not file one against that same project today.
The law also allows single-family development in any district zoned for residential use. It requires cities to allow smaller lots for homes under 2,500 square feet and gives those homes looser building-code options. All of that weakens the public tools neighbors used to rely on. The private tools stay where they were.
"Our housing market didn't evolve into what it is because of one bill, and it will not be fixed with one bill."
That quote comes from Will Ruder of the Home Builders Association of Greater Kansas City. He called the law "great progress" but not "a magic bullet." The point for a buyer is that the change will play out slowly, one lot at a time. Each lot's own documents will shape how it plays out there.
Each City Is Moving at Its Own Speed
The state set the rules, but each city has to write them into its own code, and they are doing it on very different timelines. Below is the status from the most recent reporting we found, which runs through August 21, 2026. Some of it may have moved since.
| City | What has happened | Where it stands |
|---|---|---|
| Roeland Park | Council voted 6-0 on Aug. 17 | Single-family housing allowed in all residential zones; ADUs by right instead of by special use permit |
| Westwood | Ordinance 1064 passed 4-0 on June 11 | Homes under 2,500 sq ft may use the 2018 residential code; larger homes stay on the 2024 code |
| Overland Park | Planning Commission voted 10-0 in June to give notice of code changes; council adopted looser standards for smaller homes | Full development code rewrite possibly drafted by year-end, adoption possibly early 2027 |
| Prairie Village | Preliminary Planning Commission discussion Aug. 4 | No changes approved; whether duplexes and townhouses fit wherever detached homes are allowed is still an open question |
| Mission Hills | Opposed the bill in March testimony | No adopted local change found in the reporting |
| Leawood | Opposed the bill in writing | No later code amendment found in the reporting |
Overland Park supported the law. Its proposed Neighborhood 1 district would prefer detached homes but could also allow cottages, duplexes and townhomes. Prairie Village, Mission, Merriam, Roeland Park and Westwood Hills jointly opposed the bill as a "one-size-fits-all mandate." For a buyer comparing towns, a city's code tells you its current answer, and that answer may change within a year. A recorded covenant changes much more slowly.
The Private Layer Is Thick in Some Places and Missing in Others
This is where neighborhoods that look alike start to separate.
Prairie Village. The J.C. Nichols Company incorporated the Prairie Village Homes Association in March 1945. The association administers a Declaration of Restrictions recorded in October 1946. It covers a defined area of about 1,700 homes, roughly bounded by 67th and 75th Streets, Mission Road and Nall Avenue. Homes outside that boundary are not covered by that declaration. Corinth Hills, also in Prairie Village, has its own 1955 declaration. Its covenants run with the land, and owners of two-thirds of the district's land can amend them by recorded written consent.
The money involved explains why this matters. The average appraised home value in Prairie Village was about $245,000 a decade ago and topped $600,000 in 2026. The city has also wrestled for years with a teardown-rebuild trend in which original postwar homes are replaced with larger ones. At those values, the rules on what can replace a house affect the value of the house next to it.
Mission Hills. The city lists three separate associations: Mission Hills Homes Association, Indian Hills Homes Association and Tomahawk Road Homes Association. The original Nichols deeds set house placement, size, setbacks and street frontage, and they required company approval of house plans. The city later added an Architectural Review Board in 1978 and design guidelines in 2012. City Attorney Anna Krstulic called the bill mixed for Mission Hills. She said its exclusion of projects that need a drainage study could protect the city, while other provisions are still ambiguous.
Fairway. The city's association directory lists Fairway Homes Association and several others. It marks Mission Highlands Homes Association as "NOT ACTIVE" and warns that some Fairway properties sit outside any association's boundaries. A house in Fairway can have strong private protection, or almost none, depending on which side of a boundary line it sits.
Leawood. The Leawood Homes Association shows how strong a subdivision-level layer can be. Its Architectural Review Committee must approve exterior renovations, additions, demolitions and replacement homes, separately from city building permits. Its standards cover size, massing, exterior materials and window placement.
SB 418 protects these covenants only to the extent they are legal and enforceable on their own terms. Whether a given restriction still applies to a given parcel depends on what was recorded and on any amendments or releases since. That calls for a title professional or attorney to answer.
The Historic Exclusion Covers Less Ground Than Its Name Suggests
The law excludes projects inside a district on the National Register of Historic Places or otherwise subject to historic preservation review. It is easy to assume older Nichols neighborhoods fall under that exclusion. The Kansas Historical Society's Johnson County listings point the other way. Prairie Village's National Register entry is Harmon Park Swale. Mission Hills has individual properties, the Horn-Vincent-Russell Estate and the Wolcott House. Fairway has the Shawnee Methodist Mission. We found no residential neighborhood district listed in any of the three cities. Whether Mission Hills' own design review counts as "historic preservation review" under the statute has not been settled in anything we reviewed.
So the historic exclusion protects specific landmarks, not whole neighborhoods. In most cases, the recorded covenant remains the strongest private protection.
A Due-Diligence Order That Fits the New Rules
- Ask which homes association, if any, covers the specific lot. Don't assume the city's name answers that, since Fairway and Prairie Village both have properties outside association boundaries.
- Read the title commitment's exceptions for recorded declarations, supplemental declarations and amendments.
- Get the declaration itself and look at what it controls, how long it runs, and how many owners it takes to amend or release it.
- Check the city's current code status, keeping in mind that Prairie Village, Mission Hills and Leawood had not adopted SB 418 changes in the reporting available through late August.
- Look at nearby vacant or teardown-ready lots and ask what the city's code and the covenants would each allow there.
- Bring the documents to a title professional or real estate attorney for any question about whether a covenant can be enforced.
FAQ
Does SB 418 let someone build a duplex next to my house in Johnson County? The statute counts a duplex as a single-family home, and cities are still working out what that means locally. Prairie Village had not decided as of August. A recorded covenant that limits construction is not invalidated by the law.
Will neighbors get a notice before a by-right project is approved? The Johnson County Post reports that the law removes some written notification requirements for single-family developments, so a neighbor may not receive a letter.
Is my older Nichols-era deed restriction still enforceable? It depends on the parcel's recorded history, including amendments and releases. A title professional or attorney can answer that for a specific address. This post is not legal advice.
Before you write an offer in Prairie Village, Leawood, Mission Hills or Fairway, Candi Sweeney and Ashley Sweeney-Emmons can help you pull the association details and recorded documents for the homes on your list. If you already own in one of these neighborhoods, start with our free instant home valuation, and we'll go over what your lot's covenants mean under the new law.
