ADU Rules: Lowell vs Wakefield
How do adu rules rules compare between Lowell, MA and Wakefield, MA?
Lowell and Wakefield have similar restriction levels.
Lowell, MA
Middlesex County
Under the Massachusetts Affordable Homes Act of 2024 and MGL c.40A s.3A, ADUs up to 900 square feet are allowed by right on single-family lots in Lowell. The city updated its zoning to comply with the state ADU mandate effective February 2025.
View full Lowell rules →Wakefield, MA
Middlesex County
Wakefield adopted a local Accessory Dwelling Unit zoning bylaw at the May 2025 Annual Town Meeting to comply with Massachusetts' Affordable Homes Act (Chapter 150 of the Acts of 2024, Section 8), which took effect statewide February 2, 2025. The state law amends G.L. c. 40A and allows ADUs up to 900 sq ft (or 50% of the primary dwelling, whichever is smaller) by-right in all single-family zoning districts.
View full Wakefield rules →Key Facts Comparison
| Fact | Lowell | Wakefield |
|---|---|---|
| State law | MGL c.40A s.3A | - |
| Size cap | Up to 900 sq ft | - |
| Approval | By right not SP | By right; no special permit |
| Owner occupancy | Cannot be required | - |
| Effective | February 2025 | - |
| State Code | - | G.L. c. 40A; Affordable Homes Act §8 |
| Effective Date | - | February 2, 2025 (statewide) |
| Local Bylaw | - | Adopted May 2025 ATM |
| Max ADU Size | - | 900 sq ft or 50% of primary |
Highlighted rows indicate differences between cities.
Lowell FAQ
Do I need a special permit for an ADU in Lowell?
No. Under Massachusetts law effective February 2025, ADUs up to 900 square feet are allowed by right in single-family zones.
Can I rent the ADU short-term?
Potentially restricted. Lowell can limit short-term rentals even though the ADU itself is allowed by right.
Wakefield FAQ
Are ADUs allowed by-right in Wakefield?
Yes. Under Section 8 of the Massachusetts Affordable Homes Act (effective February 2, 2025) and Wakefield's local bylaw adopted at the May 2025 Annual Town Meeting, one ADU up to 900 sq ft is allowed by-right in any zoning district that allows single-family dwellings.
How big can a Wakefield ADU be?
Up to 900 sq ft, or 50% of the primary dwelling's gross floor area, whichever is smaller, under the state law amending G.L. c. 40A. The ADU must have a separate entrance and meet the State Building Code (780 CMR).
Can Wakefield require owner-occupancy or a special permit?
No. The Affordable Homes Act prohibits municipalities from requiring owner-occupancy or a special permit/variance for ADUs in single-family zones, though objective dimensional and short-term-rental restrictions are allowed.
Compare other topics
See how Lowell and Wakefield compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool