ADU Lookup

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Saugus

Saugus

By Right

Town of Saugus · Essex County · Last verified 2026-02-25

Key Requirements

Permit Type

By Right

Permit Authority

Building Inspector

Local Terminology

ADU

Max Size (sq ft)

900

Max Size (% of principal)

50%

Size Rule

Whichever is smaller

Attached Allowed

Yes

Detached Allowed

Yes

Internal Allowed

Yes

Parking Spaces Required

1

Transit Exemption

Yes

Short-Term Rental

Not addressed

Owner Occupancy Required

No

Design Review Required

Historic District Review

Energy Code

Stretch Code

HERS Rating Required

Yes

Max HERS Index (ADU)

52

Quick Summary

  • Saugus has a draft ADU bylaw (Section 12.4) that predates the state Affordable Homes Act and has not been updated to reflect state preemption.
  • Under state law (effective February 2, 2025), ADUs are allowed by right in all single-family residential districts -- no special permit is needed, regardless of the draft bylaw's language.
  • The draft bylaw's owner-occupancy requirements, family-member-only restrictions, 10,000 sq ft minimum lot size, and 2-parking-space mandate are all preempted by state law.
  • The draft includes two ADU categories: "Family ADUs" and "Deed-Restricted (Affordable) ADUs" -- the family category's restrictions are largely unenforceable under state law.
  • Until Saugus adopts a final bylaw compliant with state law, the state default rules under 760 CMR 71.00 govern Protected Use ADUs.

Requirements at a Glance

RequirementRule
Permit typeBy right (state law; draft bylaw's special permit requirement is preempted)
Max size900 sq ft or 50% of principal dwelling, whichever is smaller (state law)
BedroomsDraft bylaw limits to 2 bedrooms (may be challenged)
Attached / Detached / InternalAll types allowed under state law
ParkingMax 1 space; 0 within 0.5 miles of transit (state law overrides draft's 2-space requirement)
Owner occupancyNot required (state law preempts draft bylaw)
Short-term rentalNot specifically addressed in draft
Separate saleProhibited -- ADU cannot be sold as condo or separate from principal dwelling
Permit authorityBuilding Inspector

ADU Questions in Saugus

Can I build an ADU in Saugus, MA?

Yes. Accessory dwelling units are allowed by right in Saugus, MA, meaning you do not need a special permit or a zoning variance as long as the unit meets the town's dimensional rules. You still need a building permit from the Building Inspector. Saugus calls these "ADU."

How big can an ADU be in Saugus, MA?

Saugus limits an accessory dwelling unit to 900 square feet or 50% of the principal dwelling, whichever is smaller. State law protects ADUs up to 900 square feet on single-family lots, so a town cannot enforce a smaller cap on a protected-use ADU. The bylaw also caps the unit at 2 bedroom(s).

What types of ADU are allowed in Saugus, MA?

Saugus permits 3 forms of accessory dwelling unit: detached (a separate structure in the yard); attached (an addition to the house); internal (a conversion of existing space). Which one makes sense usually comes down to your lot, your septic or sewer situation, and whether you want the unit connected to the main house.

Does Saugus, MA require extra parking for an ADU?

Saugus's bylaw calls for 1 additional off-street parking space(s) for an ADU. Under state law, towns cannot require more than one space for a protected-use ADU, and no parking at all can be required within a half mile of transit.

Do I have to live on the property to rent out an ADU in Saugus, MA?

No. Saugus does not impose an owner-occupancy requirement, and state law bars towns from requiring it for protected-use ADUs. You can rent the unit without living on site.

What energy code applies to an ADU in Saugus, MA?

Saugus has adopted the Stretch Energy Code. That means a new ADU must hit a HERS rating of 52 or lower, which drives real decisions about insulation, air sealing, windows, and heating — typically an all-electric heat pump system. Budget for a HERS rater on the project from day one.

Based on Saugus’s bylaw as last verified 2026-02-25. Bylaws change at annual town meetings — confirm with the Inspectional Services / Affordable Housing Trust before you build.