The Derby construction market
Derby lies along K-15 and Rock Road southeast of Wichita, between McConnell Air Force Base to the north and open land to the south. It has grown steadily as a family-oriented suburb, and its construction market is led by new subdivisions and custom homes, neighborhood retail and restaurants along Rock Road, schools, and city facilities. Like the rest of the Wichita area, it also sees regular hail and wind repair work.
Codes: Derby is on the 2024 I-Codes
Derby is one of the clearest examples of how Kansas home rule affects estimates. The city adopted the 2024 IBC, IRC, IPC, IFGC and IMC and the 2023 NEC, with amendments, for permit applications submitted on or after January 1, 2026, and states the codes are generally consistent with those of Wichita and Sedgwick County. Derby runs its own permitting rather than using MABCD.
For residential estimates, newer editions can affect:
- Energy code insulation, air sealing and duct testing.
- Electrical protection such as GFCI, AFCI and surge requirements under the 2023 NEC. See electrical estimating.
- Egress, smoke alarm and other life-safety details.
Read Kansas building codes by city for how editions vary across the state.
Site and weather conditions
- Footings: frost depth around 30 inches is typical in south-central Kansas; confirm with the city.
- Hail and wind: Derby shares Wichita's high hail exposure. Owners frequently ask for Class 4 shingles and storm-resistant details. See roofing takeoffs and storm damage estimating.
- Drainage: flat terrain makes lot grading and stormwater detention important on new subdivisions.
Pricing Derby work
Derby pricing follows the Wichita market, generally below Johnson County levels. Federal work at nearby McConnell AFB is subject to Davis-Bacon wages. New-home labor is generally exempt from Kansas sales tax, while repairs and remodels are generally taxable; see our sales tax guide.
Projects we estimate in Derby
- Residential new homes, subdivisions and remodels.
- Commercial retail, restaurants and medical offices.
- Storm damage roofing and exterior scopes.
Frequently asked questions
Which building codes does Derby enforce?
Derby adopted the 2024 IBC, IRC, IPC, IFGC and IMC and the 2023 NEC, with local amendments, for permit applications submitted on or after January 1, 2026. The city states the adopted codes are generally consistent with Wichita and Sedgwick County.
Does Derby use MABCD for permits?
No. Derby administers its own building permits and inspections, separate from the Wichita-Sedgwick County MABCD department, although its code editions are aligned with the county.
How do the 2024 codes change residential estimates?
Newer energy, electrical and residential code editions can change insulation and air-sealing requirements, GFCI and AFCI protection, surge protection and other details. We price to the edition in force for the permit date.