The City of Raymore, Missouri requires a building permit from its building official before construction, alteration or demolition of a building inside city limits1. Raymore adopts and administers its own zoning in Title IV of its city code2. Septic rules inside the city are not confirmed; ask the Raymore Building Inspections office and the Cass County Environmental Health Department.
At a glance
- Building permit
- Required from the City of Raymore's building official1
- Zoning
- City of Raymore zoning, Title IV of the city code2
- Agricultural district lot size
- 10 acres minimum in the A district3
- Rural residential lot size
- 1 acre minimum in the RR district4
- R-1 lot size
- 8,400 sq ft minimum5
- Septic
- Not confirmed inside city limits; Missouri requires a permit for most onsite systems6
Who to call
Building permits
City of Raymore Building Inspections Office
Building permits and construction inspections inside Raymore city limits
100 Municipal Circle, Raymore, MO 64083
Septic permits
Cass County Building Codes, Zoning & Environmental Health Department
County onsite wastewater (septic) office; its published rules cover unincorporated Cass County, so confirm with it whether an address inside Raymore falls under them
30508 S. W. Outer Road, Harrisonville, MO 64701
Contact details are copied from each office’s official page and were checked against it on October 23, 2026.
Off-grid gear
Going off-grid in Raymore means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Does Raymore, Missouri have zoning, and what does it mean for lot size and setbacks?
Yes. The City of Raymore adopts and administers its own zoning and land-use standards in Title IV of its city code2. The residential and agricultural districts are A, RE, RR, R-1A, R-1, R-1.5, R-2, R-3, R-3A and R-3B7.
Lot size depends on the district. The A (Agricultural) district requires at least 10 acres per lot3. The RR (Rural Residential) district requires at least 1 acre4. The R-1 district requires at least 8,400 sq ft5.
Setbacks also vary by district. In R-1, the front and rear yards are at least 30 ft and the side yard at least 10 ft8. In the A district, the front and rear yards are at least 50 ft and the side yard at least 15 ft9. We did not review the commercial, industrial and overlay districts, and we could not confirm minimum home size, accessory dwelling, RV or tiny-home rules; ask the city's planning and zoning staff at the number below.
Do you need a building permit in Raymore, and who issues it?
Yes. Inside Raymore city limits, it is unlawful to construct, enlarge, alter, repair, move or demolish a building without applying to the building official and obtaining the required permit1. The City of Raymore issues the permit, not Cass County.
The Raymore Building Inspections Office takes building permit applications, and the city's website offers fillable permit forms and an online permit portal10. Call (816) 331-7916 or email [email protected]10.
How do septic permits work inside Raymore?
We could not confirm who issues septic permits for a home inside Raymore city limits. Missouri requires a permit to install or repair most onsite wastewater systems6, and Cass County's published onsite wastewater rules are written for unincorporated Cass County11.
Before you buy a lot that is not on city sewer, ask the Raymore Building Inspections Office whether the lot must connect to public sewer, then ask the Cass County Building Codes, Zoning & Environmental Health Department at 816-380-8134 whether it permits a septic system at that address12.
Building a home in Raymore: the steps, in order
- Confirm the zoning district of the lot with the City of Raymore, and check its lot size and setbacks against your plan2.
- Ask the city whether the lot has public sewer, and if not, ask Cass County Environmental Health about septic12.
- Hire a contractor with a City of Raymore occupational license, or ask the building official how licensing applies to you10.
- Apply for the building permit through the city's online permit portal or fillable forms before work starts10.
- Schedule inspections with the Building Inspections Office as work proceeds10.
- Raymore can issue a temporary certificate of occupancy valid for no more than 120 days, with a $1,000 bond, if work items remain13.
What stays with Cass County, and what to check before you buy in Raymore
Cass County's building, zoning and septic rules apply to unincorporated land. Land outside Raymore city limits is covered on the Cass County page; the county requires building permits only for certain residential types there14.
For land inside the city, the county's own septic and floodplain offices may still matter. Confirm with the city whether the parcel lies in a mapped floodplain; we did not confirm Raymore's floodplain rules. Cass County's typical home value is $345,263, and its effective property tax rate is 0.9%1516.
Watch-outs
- We could not confirm Raymore's rules on RV living, tiny homes, accessory dwellings, manufactured homes or permit fees; ask the Raymore Building Inspections Office at (816) 331-791610.
- Cass County's building, zoning and septic rules cover unincorporated land only, so a parcel's address matters: confirm whether it sits inside Raymore city limits before relying on any county answer17.
Sources
- Chapter 500 Building Regulations, Article I In General (eCode360, City of Raymore) (Raymore), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- Chapter 405: Agricultural and Residential Districts (eCode360, City of Raymore) (Raymore), quoted and re-checked
- City of Raymore Building Inspections Office (raymore.com)
- Cass County Missouri Wastewater Treatment Systems Ordinance (2026 county census)
- Cass County Building Codes, Zoning & Environmental Health Department (casscounty.com)
- Chapter 500 Building Regulations, Article I In General (eCode360, City of Raymore) (Raymore), quoted and re-checked
- casscounty.com (2026 county census)
- Typical home value (Zillow): Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Cass County Zoning Department Procedures (2026 county census)
Written October 23, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.