ADU Pass
Springfield
Greene County portion
Also in: No County
ADU Pass helps homeowners in Springfield, Greene County, Missouri navigate the permit paperwork for building an accessory dwelling unit. This area covers 8 ZIP codes.
Map
ADU details
ADU legality: unclear
Missouri leaves ADU regulation to local municipalities under home-rule or Dillon-rule authority. Springfield permits ADUs subject to local conditions per its zoning ordinance.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $1,700 | $32,250 | $33,950 |
| 600 | 600 | $1,700 | $129,000 | $130,700 |
| midpoint | 525 | $1,700 | $112,875 | $114,575 |
| maximum | 900 | $1,700 | $193,500 | $195,200 |
Fee breakdown (as of 2026-04)
Permitting process
- LDC zoning check (~3d)
Confirm parcel zoning under the new 2026 Land Development Code at library.municode.com/mo/springfield; carriage-house / ADU provisions in Chapter 36 apply citywide in residential districts subject to lot-size threshold. - Pre-app at 840 Boonville (optional) (~5d)
Visit Building Development Services permit desk (840 Boonville Ave, 7:30am-4pm M-F) or call 417-864-1585 to confirm submittal scope, especially for ADU-on-existing-SFR projects spanning Chapter 36 zoning + Chapter 7 building. - Submit through eCity portal (~1d)
Upload application, site plan, floor plan, elevations, and structural drawings through eCity.springfieldmo.gov following AR2024-02 REVISED submittal standards for new and additions to one- and two-family dwellings and accessory structures. - Plan review by Building Development Services (~28d)
Concurrent review by Building, Land Development (zoning), and Fire Marshal; Public Works for any right-of-way / driveway work; City Utilities for water/electric service if a separate meter is desired. - Issuance and inspections (~75d)
Permit issued through eCity once corrections cleared and fees paid; inspections requested by phone or portal — footing, foundation, framing, rough trades, insulation, drywall, and final. - Certificate of occupancy (~5d)
Final inspection by Building Development Services triggers the C of O for the new ADU; LDC carriage-house owner-occupancy affidavit recorded at this point if applicable.
Viability (permitted uses)
- Long-term rental: yes Long-term rental of ADU generally permitted; landlord-tenant law and any city rental-registration ordinance apply.
- Short-term rental: with-restrictions STR rules vary by city. Springfield regulates STRs separately from ADU permitting; check local STR ordinance and HOA covenants.
- Office rental: with-restrictions Detached office rental requires home occupation permit or rezoning.
- Home office: yes Home occupation permitted with restrictions on signage and customer traffic.
- Studio / workshop: yes Personal artist studio is a permitted accessory use.
- Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock varies by district.
- Relative support: yes Family-occupancy ADU explicitly permitted in single-family zones.
Contacts
Staff: Planning & Development (Land Development Code administration) (LDC / Forward SGF Implementation), Springfield Fire Department - Fire Marshal (Fire & Life Safety Plan Review)
Utilities
- Water: Springfield Water Utility · 30d connect · $4,500
- Sewer: Springfield Sewer / Wastewater · 30d connect · $5,500
- Electric: Springfield Electric Utility · 21d connect · $1,800
- Gas: Springfield Gas Utility · 30d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 7mo · typical 10mo · worst 16mo
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
Missouri has no HOA-ADU preemption; HOA covenants restricting ADUs are enforceable.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: Springfield Land Development Code (Chapter 36, Code of Ordinances), adopted 2026-04-06, last amended 2026-04-06
- 2022-10-24 — Forward SGF 2040 comprehensive plan adopted (city-ordinance)
Springfield City Council formally adopted Forward SGF, the city's first comprehensive plan in 25 years; one of its housing implementation actions called for revising Chapter 36 to allow accessory dwelling units citywide.
Effect: Created the policy mandate for the new Land Development Code, including accessory-dwelling-unit (also called carriage house) provisions in single-family districts. - 2025-03-01 — Land Development Code (LDC) draft adoption (city-ordinance)
Springfield City Council adopted the proposed Land Development Code consolidating zoning, subdivision, and site-development regulations; testing and structural fixes ran through 2025.
Effect: Set the framework that replaces piecemeal Chapter 36 amendments. ADU / carriage-house language was the single most-debated provision (Hosmer dissent on owner-occupancy). - 2026-04-06 — New Community Land Development Code effective (city-ordinance)
City Council adopted the new Community Land Development Code on 2026-04-06, putting the Forward-SGF-driven ADU rules into effect citywide.
Effect: ADUs (carriage houses) now permitted in single-family districts subject to lot size and either-unit owner-occupancy condition; Building Development Services issues permits via eCity portal under AR2024-02 REVISED submittal standards.
Greene County — county ADU rules and overlays
County ADU ordinance
Greene County sits in Missouri, which has not enacted a statewide ADU preemption or by-right ADU statute. Authority over ADU zoning, setbacks, parking, size limits, owner-occupancy, and permitting therefore rests with the local jurisdiction. The county adopts its own zoning ordinance for unincorporated territory, and each incorporated municipality inside the county adopts its own.
State-floor overlay: No Missouri statewide ADU preemption is in force as of 2026-04-27. The county and its incorporated municipalities retain full authority over ADU zoning and permitting.
County regulatory overlays
Greene County administers flood-hazard, and (where mapped) coastal, wildland-fire, historic, and airport overlays that shape ADU project feasibility. The most consistent overlay across the county is FEMA NFIP floodplain regulation; other overlays apply to specific geographies inside the county.
- FEMA NFIP Special Flood Hazard Areas in Greene County — A new ADU in a mapped SFHA must be elevated to or above the Base Flood Elevation; cost impact on the project is often material.
- Historic districts and individually-listed historic resources
County permitting (unincorporated parcels)
Greene County issues building permits for parcels in unincorporated territory through its development services / planning department, with separate review tracks for zoning conformance, building-code compliance, on-site sewage where applicable, floodplain compliance, and addressing. Inside incorporated municipalities, city departments handle their own permits; the county's authority is geographically limited to unincorporated territory. An ADU permit application is typically processed as a residential building permit with a zoning verification step against the county's ordinance for the parcel's zoning district.
Missouri state — ADU law and programs
State financing programs
Missouri Housing Development Commission (MHDC), the state housing finance agency under the Department of Economic Development, does not operate an ADU-specific loan or grant product as of 2026-04-26. Construction or rehab of an ADU on a primary residence may be financed indirectly through MHDC's First Place Program (first-time-homebuyer mortgage with below-market rate) or Next Step Program (mortgage paired with a forgivable second of up to 4% of loan amount). Both are mortgage-purchase products and require the property to be the borrower's primary residence; an existing ADU on the property is permitted under standard agency guidelines. MHDC also administers Low-Income Housing Tax Credits, the Affordable Housing Assistance Program (AHAP) tax credit, and federal HOME funds — none of which is a homeowner-facing ADU instrument.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Codes
- 65801
- 65802
- 65803
- 65804
- 65806
- 65807
- 65809
- 65810
Post Office
- 1442 S Glenstone Ave, 65804
- 1919 W Bennett St, 65807
- 3951 S Campbell Ave, 65807
- 500 W Chestnut Expy, 65801