Springfield
ADU Pass helps homeowners in Springfield, Clark County, Ohio navigate the permit paperwork for building an accessory dwelling unit. This area covers 6 ZIP codes.
Map
ADU details
ADU legality: with-restrictions
Springfield is a chartered home-rule city and the county seat of Clark County. ADU permitting is governed by the May-2025 rewritten zoning code; review is administrative if the unit fits Chapter 1107 standards, with Planning Commission referral for variances. Wittenberg University-area parcels and the National Trail/Old Reid Park historic-tagged corridors require additional design review.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 300 | $1,650 | $63,000 | $64,650 |
| 600 | 600 | $1,850 | $132,000 | $133,850 |
| midpoint | 700 | $1,950 | $161,000 | $162,950 |
| maximum | 900 | $2,150 | $220,500 | $222,650 |
Fee breakdown (as of 2026-04)
Permitting process
- Pre-application zoning consult with Planning Division (~5d)
Email Vaidehe Agwan (vagwan@springfieldohio.gov) or Isabel Travis (itravis@springfieldohio.gov) at 76 E. High St 2nd floor; Planning will pull the parcel on the Clark County GIS viewer (https://clarkcounty.maps.arcgis.com) and confirm Chapter 1107 lot-coverage and accessory-feature compliance. - Register and submit on the CityWorks online portal (~1d)
Submit zoning application and building permit application through https://app05.cityworksonline.com/CLIENT_SpringfieldOH-Public/login - paper intake is no longer accepted. Upload site plan, floor plan, elevations, energy compliance worksheet (REScheck for IECC 2018), and contractor's Ohio license info. - Zoning certificate review (Planning) (~14d)
Planning issues zoning certificate for compliant Chapter 1107 accessory-feature applications administratively; non-conforming applications referred to Springfield Planning Commission or Board of Zoning Appeals. - Building plan review (Building Regulations division) (~21d)
Michael Reffitt (Chief Building Official) and inspectors Mike Trabert / Matthew Laird review against the OBBS-adopted Ohio Residential Code (IRC 2018 with state amendments). Plan-check cycle typical for residential. - Fee invoice and permit issuance (~3d)
CityWorks invoices fees once both tracks clear; payment online; permit emailed. - Construction inspections via CityWorks
Foundation, framing, plumbing/electrical/mechanical rough, insulation, drywall, final - inspections requested through CityWorks; called in to (937) 324-7389. - Certificate of occupancy (~5d)
CO issued after final inspection pass; ADU eligible for occupancy and rental.
Viability (permitted uses)
- Long-term rental: yes (Springfield Chapter 1107 accessory dwelling provisions) 30+day rental of an ADU is a permitted accessory residential use under Chapter 1107. Landlord-tenant law (ORC 5321) governs.
- Short-term rental: with-restrictions (Springfield Codified Ordinances rental-registration provisions) Springfield does not run a separate STR licensing scheme as of Apr 2026 but requires landlord rental registration and lodging-tax remittance to Clark County for stays under 30 days. ADU may serve as STR if rental registration is current.
- Office rental: no Chapter 1107 limits accessory dwellings to dwelling-unit use; commercial office tenant not permitted in residentially-zoned ADU.
- Home office: yes Home occupation is a permitted accessory use citywide subject to traffic, signage, and customer-volume limits.
- Studio / workshop: yes Personal artist/workshop use is a permitted accessory residential use; Wittenberg-faculty studio sheds are common in the University area.
- Agriculture: with-restrictions Backyard chickens/bees allowed by permit citywide; no livestock; the ADU itself remains residential.
- Relative support: yes Family-occupancy ADU explicitly permitted; common Springfield use is multigenerational housing on older South Fountain blocks.
Incentives
- Community Reinvestment Area (CRA) tax abatement — Springfield's CRA program offers up to 100% tax abatement on new-construction residential improvements (including detached ADUs counted as new residential value) for 10-15 years on qualifying parcels in designated CRAs. Coverage spans much of the older grid (downtown, South Fountain, Wittenberg-area).
Contacts
Staff: Michael Reffitt (Chief Building Official, Building Regulations) mreffitt@springfieldohio.gov, Vaidehe Agwan (City Planner, Planning & Zoning Division) vagwan@springfieldohio.gov, Isabel Travis (Planning and Zoning Technician) itravis@springfieldohio.gov, Logan Cobbs (Director, Community Development)
Utilities
- Water: City of Springfield Water - drawn from the Mad River buried-valley aquifer · 28d connect · $3,800
- Sewer: City of Springfield Wastewater Treatment Plant · 30d connect · $4,200
- Electric: AES Ohio (formerly Dayton Power & Light) - investor-owned utility serving most of Springfield · 21d connect · $1,650
- Gas: CenterPoint Energy Ohio (formerly Vectren) · 28d connect · $1,450
Property values & taxes
Market rent by ADU size
| Sq ft | Rent |
|---|---|
| 400 | $825/mo |
| 600 | $1,100/mo |
| 800 | $1,325/mo |
| 900 | $1,450/mo |
Construction timeline
Realistic total: best 6mo · typical 9mo · worst 14mo
Springfield has a thinner GC bench than Columbus or Dayton; many ADU jobs use Greene/Montgomery County builders willing to commute to I-70. Mad River buried-valley aquifer requires careful sewer-lateral coordination.
Modular pathway Ohio Industrialized Unit Program (OBBS) · inspectors are rare with modular · 1 modular permits (last 24mo)
I-70 access is straightforward; older grid lots in South Fountain have narrow alleys and overhead power that limit module width to ~14 ft.
Financing
Insurance impact
Tornado-alley exposure (Clark County is in the southwestern Ohio severe-weather corridor) modestly inflates premium quotes; hail and wind are the primary loss drivers, not seismic or wildfire.
HOA prevalence & preemption
Springfield is mostly fee-simple older grid lots with limited HOA presence; HOA covenants concentrate in newer subdivisions north and west of the city. Where covenants prohibit accessory dwellings or secondary kitchens, those covenants remain enforceable - Ohio has no AB 670-style override.
Regulatory overlays (3)
- historic-district — South Fountain Avenue Historic District (NRHP-listed); Old Reid Park / Wittenberg-adjacent contributing structures; downtown Heritage District · +21d · +8% cost
Historic Design Guidelines govern infill/accessory features in the South Fountain district; Architectural Review Board sign-off needed. (map) - flood-zone — Mad River and Buck Creek FEMA Zone AE corridor running through Springfield (downtown to North Hampton) · +14d · +5% cost
Finished-floor elevation 1 ft above BFE in Zone AE; flood vents on enclosed below-base areas; carriage-house parcels in the Buck Creek floodway need engineering review. (map) - other — National Trail (Old US 40) corridor cultural-resource sensitivity; Wittenberg University environs · +7d · +2% cost
National Trail (the original National Road) bisects Springfield; SHPO consultation may be triggered for ADUs adjoining Trail-listed structures. (map)
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Ohio Board of Building Standards (OBBS) Residential Code amendments — OBBS removed the IRC R313 residential fire-sprinkler mandate statewide and added Ohio-specific amendments to chapters R301 (climatic and geographic), R322 (flood-resistant), and R403 (footings).
- Springfield Building Regulations local amendments — Springfield's Building Regulations division publishes minor local amendments through the Chief Building Official; CityWorks portal hosts current amendment list.
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Springfield Codified Ordinances Part Eleven - 2025 Zoning Code (Chapter 1107 Accessory Uses & Features Standards), adopted 2025-05-06, last amended 2025-05-06
- 2001-01-01 — Original Part Eleven Zoning Code (Springfield, 2001) (city-ordinance)
Springfield's prior comprehensive zoning code, in force from 2001 until the 2025 replacement, treated secondary residential units as a non-permitted use in most R-1 districts and required a use variance from the Board of Zoning Appeals.
Effect: Effectively suppressed legal ADU production for two decades; existing carriage houses and second-floor apartments behind Wittenberg-area homes operated as legal nonconforming uses. - 2024-09-01 — Connect Clark County Comprehensive Plan adoption recommendation (other)
Clark County / City of Springfield joint comprehensive plan (Connect Clark County) recommended modernizing the city's accessory-use framework to support missing-middle housing and infill on the city's older grid blocks.
Effect: Set the policy direction for the 2025 zoning code rewrite, including treatment of accessory dwellings as a permitted accessory feature in residential districts. - 2025-05-06 — Springfield Zoning Code Replacement, Ordinance 25-121 (2025 Zoning Code) (city-ordinance)
Springfield City Commission adopted the rewritten Part Eleven Zoning Code in its entirety. Chapter 1107 of the new code consolidates accessory-use regulations including accessory structures and accessory dwellings.
Effect: Replaced the 2001 code; brought ADUs and accessory features under a single coherent chapter; aligned permit intake with CityWorks online portal.
Known issues (1)
- policy-review (since 2025-05) — Expect informal staff interpretations to harden into written guidance through 2026; first batch of ADU permits under the new code is the test cohort. (source)
Clark County — county ADU rules and overlays
County ADU ordinance
Clark County, Ohio (~133,500 residents; county seat Springfield; 10 townships - Bethel, German, Green, Harmony, Mad River, Madison, Moorefield, Pike, Pleasant, and Springfield Township; incorporated places Springfield (city, county seat, ~59,680), New Carlisle (city, ~5,693), Catawba (village), Donnelsville (village), Enon (village - partly extends into Greene County), Medway (village), North Hampton (village), South Charleston (village), South Vienna (village), and Tremont City (village)) DOES exercise county-tier zoning under O.R.C. Chapter 303. Clark County is among the minority of Ohio counties that have adopted a county Rural Zoning Resolution (Resolution adopted under O.R.C. 303.02 et seq. by the Board of County Commissioners); the county Combined Planning & Zoning office administers it for unincorporated parcels in any township that has not adopted its own independent township zoning resolution under O.R.C. Chapter 519. Most Clark County townships (including Mad River, Bethel, Springfield Township, and German) operate under the county Rural Zoning Resolution rather than maintaining a separate township ordinance; a few have their own (Green Township, Moorefield Township, and Pleasant Township each carry stand-alone zoning resolutions). The county Rural Zoning Resolution treats accessory dwelling units as 'accessory residential structures' or 'second dwellings on a parcel,' with permission turning on the parcel's zoning district (A-1 Agricultural and R-1/R-2/R-3 Residential have differing accessory-use allowances), minimum lot area, setbacks, and a septic-capacity finding from the Clark County Combined Health District. Ohio is a home-rule state under Article XVIII of the Ohio Constitution, which insulates municipalities from county zoning inside their corporate limits; the county ordinance therefore does NOT govern parcels inside Springfield, New Carlisle, or any of the incorporated villages - each of those administers its own zoning code. The Mad River corridor through Mad River and Bethel townships is a meaningful overlay-adjacent factor because Mad River is a state-designated scenic river and a heavily-mapped FEMA Zone AE floodplain.
State-floor overlay: No Ohio statewide ADU preemption is in force as of 2026-05-20. Clark County and each of its incorporated municipalities and zoned townships retain full authority over ADU zoning and permitting under O.R.C. Chapters 303, 519, and 713 plus Ohio Constitution Article XVIII.
County regulatory overlays
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
- 45501
- 45502
- 45503
- 45504
- 45505
- 45506
Post Office
- 150 N Limestone St, 45501