ADU Pass
Springfield
Hampden County portion
Also in: Hampshire County · No County
ADU Pass helps homeowners in Springfield, Hampden County, Massachusetts navigate the permit paperwork for building an accessory dwelling unit. This area covers 8 ZIP codes.
Map
ADU details
ADU legality: allowed
Massachusetts preempts most local ADU restrictions. Springfield permits ADUs by right in single-family zones per its zoning ordinance.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $3,100 | $45,750 | $48,850 |
| 600 | 600 | $3,100 | $183,000 | $186,100 |
| midpoint | 675 | $3,100 | $205,875 | $208,975 |
| maximum | 1,200 | $3,100 | $366,000 | $369,100 |
Fee breakdown (as of 2026-04)
Permitting process
- Pre-application zoning check (~5d)
Confirm parcel sits in a single-family-permitting district under Springfield Zoning Ordinance Title 6 (Article 5 residential-district use table) so the Affordable Homes Act by-right ADU pathway applies. Springfield's January 2025 ordinance overlays an administrative site-plan review on top of the building permit, so verify lot frontage, setbacks (typical R1 25 ft front / 10 ft side / 30 ft rear), and lot coverage before drawing. - Administrative site-plan review submittal (~21d)
Submit administrative site-plan review packet to the Office of Planning & Economic Development (city ordinance approved 2025-01-27 by City Council added this layer). Includes scaled site plan, parking diagram, drainage concept, and ADU floor plan. No public hearing for ADU-only site-plan review. - Building permit application via Accela Citizen Access (~1d)
Apply through the Springfield Accela Citizen Access portal at awca.springfield-ma.gov/CitizenAccess (parallels permits.springfieldcityhall.com). Upload stamped architectural plans, MA Stretch Code HERS rating worksheet, structural framing plan, and Title 6.31 (Property Maintenance) compliance certification. Application reviewed at 70 Tapley Street office. - Concurrent plan review (Code Enforcement, Fire, Water, Sewer) (~30d)
Springfield Code Enforcement (Building Commissioner's office) routes plans to Fire Department (Springfield FD has no auto-sprinkler trigger for single ADU under MA Amendment to IRC R313), Springfield Water & Sewer Commission (separate authority from City), and Health Dept (Title 5 if not on city sewer). Typical first-cycle comments back in 25-30 business days. - Fee payment and permit issuance (~3d)
Pay by check or money order made payable to the City of Springfield (no cash accepted at 70 Tapley Street). Building permit fee is $15 per $1,000 of construction valuation (Springfield Code Chapter 140). Permit card issued; post on site. - Construction inspections
Footing, foundation, rough framing, rough plumbing/electric/HVAC, insulation, and final. Schedule via Accela. Springfield inspectors operate from 70 Tapley Street; inspections requested 24 hours in advance for next-day slots. - Certificate of occupancy (~5d)
Final inspection by Building Commissioner triggers C of O. Required before tenant move-in or short-term-rental registration with City Clerk.
Viability (permitted uses)
- Long-term rental: yes Long-term rental of ADU explicitly permitted; Massachusetts owner-occupancy preemption (where applicable) makes ADU eligible for full landlord-tenant treatment.
- 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: Office of Planning & Economic Development (Site-Plan Review (City Hall, 36 Court Street)), Springfield Fire Department - Fire Prevention Bureau (Fire Plan Review)
Utilities
- Water: Springfield Water Utility · 21d connect · $4,500
- Sewer: Springfield Sewer / Wastewater · 21d connect · $5,500
- Electric: Springfield Electric Utility · 14d connect · $1,800
- Gas: Springfield Gas Utility · 21d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 7mo · typical 11mo · worst 17mo
Financing
Insurance impact
HOA prevalence & preemption
Massachusetts has no HOA-ADU preemption; HOA covenants restricting ADUs are enforceable.
Regulatory overlays (3)
- flood-zone — FEMA SFHA Zone AE along the Connecticut River frontage (North End / Memorial Bridge corridor) and tributaries (Mill River, Watershops Pond) · +14d · +6% cost
Connecticut River and Watershops Pond drive Springfield's principal SFHA exposure. Elevation certificate, freeboard above BFE, and flood vents on enclosed below-base areas required. National Flood Insurance Program participation through City of Springfield. (map) - historic-district — Springfield Local Historic Districts (Forest Park Heights, Maple Hill, McKnight, Quadrangle-Mattoon Street, Ridgewood) administered by the Springfield Historical Commission · +30d · +5% cost
Detached ADU in a Local Historic District requires Certificate of Appropriateness from Historical Commission before building permit; reviewed monthly. (map) - airport-noise-zone — Westover Air Reserve Base (KCEF) approach corridors clip far north Springfield; Westover ARB Joint Land Use Study compatibility zones · +7d · +2% cost
STC 30+ sound attenuation in 65+ DNL contour. Most of Springfield is well below; only Liberty Heights / Brightwood edges are flagged. (map)
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: City of Springfield Municipal Code — Accessory Dwelling Units, adopted 2020-01-01, last amended 2024-04-01
- 2024-01-01 — City of Springfield ADU code refresh (city-ordinance)
Conforming local-code amendments aligning with current Massachusetts accessory-dwelling framework.
Effect: Codified by-right ADU standards consistent with state law and local zoning.
Known issues (1)
- policy-review (since 2025-01) — Adds 21 days and $350 to the as-of-right ADU permit pathway; advocacy groups (Abundant Housing Massachusetts) flagged that mandatory site-plan review on by-right ADUs may exceed the local-authority floor under MGL Ch 40A Sec 3. (source)
Hampden County — county ADU rules and overlays
County regulatory overlays
Hampden 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 Hampden 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.
- Coastal / hurricane wind exposure — Confirm design wind speed and exposure category at the building department.
- Historic districts and individually-listed historic resources
Massachusetts state — ADU law and programs
State ADU law
Massachusetts enacted statewide ADU preemption through the Affordable Homes Act of 2024 — Chapter 150 of the Acts of 2024 — signed by Governor Maura Healey on 2024-08-06. Sections 7 and 8 of the Act amended M.G.L. Chapter 40A (the Zoning Act) Sections 1A and 3, making ADUs a 'protected use' that must be allowed by-right in single-family zoning districts statewide. ADUs are capped at the smaller of 50% of the principal dwelling's gross floor area or 900 square feet. The amendment to Section 3 became effective 2025-02-02 (180 days after the Act's effective date). The implementing regulation, 760 CMR 71.00 (Protected Use Accessory Dwelling Units), was promulgated by the Executive Office of Housing and Livable Communities (EOHLC) and took effect 2025-01-31. Municipalities cannot prohibit ADUs or impose unreasonable regulatory requirements; they retain authority over site-plan review, bulk and height limits, setbacks, and short-term-rental bans. As of 2026-04, more than 1,200 ADUs had been approved statewide in the first year of implementation.
State financing programs
Massachusetts has launched one of the most aggressive ADU-specific state financing programs in the country. MassHousing's Accessory Dwelling Unit Loan Program (ADULP), announced 2026-01-14 by Governor Healey, provides second-mortgage construction financing of up to $250,000 for detached ADUs and up to $150,000 for attached ADUs. The product is structured as a 5.25% fixed-rate, 20-year amortizing loan, with a portion of additional funding offered at 0% interest with deferred repayment terms. Eligible homeowners must meet MassHousing's statutory income limits (up to 135% of Area Median Income — ranging from ~$165K to ~$205K depending on county). MassHousing initially authorized $20M for mission-oriented homeownership, with a portion supporting ADULP. The Massachusetts Housing Partnership administers a separate $10M ADU Technical Assistance Program for predevelopment activities. The Massachusetts Housing Partnership's One Mortgage program also includes an ADU Incentive Program component.
State housing programs
Massachusetts operates an integrated state-level ADU program suite combining preemption (760 CMR 71.00 + M.G.L. c. 40A), construction financing (MassHousing ADULP), technical assistance (MHP $10M program), and a no-cost ADU Design Challenge launching replicable plan templates. Governor Healey announced this campaign in 2026 alongside the 1,200+ ADU first-year approval milestone. The state does not yet operate a statewide impact-fee waiver, but municipalities cannot impose unreasonable regulatory requirements per the Act.
- Affordable Homes Act ADU Protected-Use Framework (760 CMR 71.00) — ADUs by-right in single-family districts statewide, capped at smaller of 50% of principal dwelling or 900 sqft. Implementing regulation defines model bylaw provisions and municipal-compliance requirements.
- MassHousing ADU Loan Program (ADULP) — 5.25% fixed-rate second mortgage up to $250K (detached) or $150K (attached), 20-year amortization, with a portion at 0% deferred. Launched 2026-01-14.
- MHP ADU Technical Assistance Program — $10M state-funded program administered by Massachusetts Housing Partnership for ADU predevelopment — site evaluation, design, permit preparation, contractor coordination.
- ADU Design Challenge — Healey administration program launching replicable, no-cost ADU design templates for use across Massachusetts municipalities.
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
- 01103
- 01104
- 01105
- 01107
- 01108
- 01109
- 01119
- 01129
Post Office
- 1149 Main St, 01103
- 1883 Main St, 01101
- 3065 Main St Ste 1, 01107
- 393 Belmont Ave, 01108