ADU Pass
Springfield
Hampshire County portion
Also in: Hampden County · No County
ADU Pass helps homeowners in Springfield, Hampshire County, Massachusetts navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
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 | $50,250 | $53,350 |
| 600 | 600 | $3,100 | $201,000 | $204,100 |
| midpoint | 675 | $3,100 | $226,125 | $229,225 |
| maximum | 1,200 | $3,100 | $402,000 | $405,100 |
Fee breakdown (as of 2026-04)
Permitting process
- Confirm primary jurisdiction (cross-listing notice)
IMPORTANT cross-listing context: Springfield, MA city limits sit entirely within Hampden County. This Hampshire County entry is a navigational cross-reference for users searching the Pioneer Valley regionally. The authoritative permitting record lives at massachusetts/hampden-county/springfield.json. Permit applications must be filed with City of Springfield Code Enforcement, not any Hampshire County body (Massachusetts counties are largely abolished as functional bodies since 1997). - Pre-application zoning verification (~5d)
Verify parcel is in a single-family-permitting district under Springfield Zoning Ordinance Article 5. Affordable Homes Act (Ch 150 of Acts of 2024, eff. 2025-02-02) preempts most local restrictions; ADU up to 900 sqft is by-right. - Springfield administrative site-plan review (~21d)
Submit site-plan review packet to Springfield Office of Planning & Economic Development (city ordinance approved 2025-01-27 added administrative review on top of building permit). - Building permit via Accela Citizen Access (~1d)
Apply through awca.springfield-ma.gov/CitizenAccess. Reviewed by Code Enforcement at 70 Tapley Street, Springfield. - Concurrent plan review (~30d)
Code Enforcement, Fire Prevention, Springfield Water & Sewer Commission, and Health Department review in parallel. MA Stretch Code energy review included. - Permit issuance and inspections (~3d)
Pay $15-per-$1,000-valuation building permit fee by check or money order (no cash). Footing, foundation, framing, rough MEP, insulation, final inspections. - Certificate of occupancy (~5d)
Final inspection by Building Commissioner triggers C of O.
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: Pioneer Valley Planning Commission (Regional planning resource (covers Hampden + Hampshire + Franklin)), Springfield Office of Planning & Economic Development (Site-plan review - 36 Court Street)
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 (1)
- flood-zone — FEMA SFHA along Connecticut River within Springfield city limits (in Hampden County, not Hampshire) · +14d · +6% cost
Hampshire County file - cross-reference only. Connecticut River SFHA managed by City of Springfield (Hampden). (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 (2)
- data-modeling (since 2026-04) — Springfield is wholly within Hampden County; the Hampshire entry exists only because the metro area extends north into Hampshire (Northampton, Easthampton, etc.) and some users navigate by Pioneer Valley region. All authoritative data lives in the hampden-county file. (source)
- policy-review (since 2025-01) — Mandatory site-plan review on by-right ADUs may exceed Affordable Homes Act preemption floor; expect possible AG advisory or amendment. (source)
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 Code
- 01033
Post Office
- 1883 Main St, 01101
Locale Names
- Springfield Ma S&dc