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Lynn, MA Accessory Structures: Tiny Homes (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Tiny home rules in Lynn, MA, covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds, determine where they are legal and how they get permitted.

Key Facts

On Wheels
Cannot be a dwelling/ADU
Foundation Home
May qualify as ADU
Max Size
900 sq ft or 50% of home
Max Height
15 ft (detached ADU)
Building Code
780 CMR required

Summary

Lynn bans tiny homes on wheels as dwellings. ADUs may not occupy RVs, campers, or structures on wheels. A tiny home on a permanent foundation must meet the MA Building Code and accessory-structure zoning limits.

ADUs may not be located in temporary structures, mobile structures, campers, recreational vehicles (RVs), and other structures on wheels.

Source: City of Lynn Revised OrdinancesView official code

Official source re-checked September 8, 2026: the cited page had not changed since it was quoted.

Full Breakdown

Lynn does not recognize a movable tiny home as a legal dwelling. Under the 2025 Lynn Zoning Ordinance (Section 9.B.3.a), ADUs may not be located in temporary structures, mobile structures, campers, recreational vehicles, or other structures on wheels. A tiny house parked on a trailer is treated as an RV, not a residence. A tiny home built on a permanent foundation can qualify as an ADU if it meets Section 9.B: by right on single-family lots, no larger than 900 square feet or 50% of the main home, under 15 feet as a detached accessory structure, and one added parking space unless near transit. All such construction requires a building permit under the MA Building Code (780 CMR).

Violations & Fines

Living in a tiny home on wheels or an RV as a permanent residence violates the zoning ordinance and draws correction orders. Building a foundation tiny home without permits triggers stop-work orders and retroactive permit penalties.

Frequently Asked Questions

Can I live in a tiny home in Lynn?
Only if it is on a permanent foundation and meets the ADU rules. Tiny homes on wheels, RVs, and campers cannot be used as dwellings under Lynn's zoning.
Can a tiny house be an ADU?
Yes, if built on a foundation, under 900 square feet or 50% of your home, under 15 feet tall, and permitted under the MA Building Code and Section 9.B.

Sources & Official References

Other rules in Lynn

Parking Rules: Overnight ParkingSignificant RestrictionsADU RulesSome RestrictionsShed & Carport RulesSome RestrictionsNoise Ordinances: Decibel LimitsSome RestrictionsParking Rules: Driveway RulesSome RestrictionsParking Rules: EV ChargingSome RestrictionsParking Rules: Loading ZonesSome RestrictionsParking Rules: Snow Removal Parking RulesSome Restrictions

All Lynn rules

Compare Lynn to another location·View the Massachusetts accessory structures overview

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