Dennis, Mass., Code of Bylaws ch 242 § 242-10
Seasonal conversion (Dennis Housing)
Operative Text
A. Applicability. No building within the Town of Dennis shall be converted, altered or repaired so as to extend its seasonal use nor shall its use be changed unless the present, existing septic system complies with the requirements of Title V, 310 CMR 15.00 , or the system can be upgraded to comply with Title V. The Board of Health shall not approve any permits unless the requirements of Subsections B , C and D are met. B. Each unit intended for living purposes shall meet the minimum requirements set by 105 CMR 410.00 , Sanitary Code, Chapter II, Minimum Standards of Fitness for Human Habitation, and Dennis regulations for housing. C. Each unit intended for living purposes shall be connected to a central or individual septic system which meets the requirements of 310 CMR 15.00 , Title V, and Dennis regulations for subsurface disposal of sewage. No building shall be remodeled, replaced or altered or added to in any manner which increases usage of said septic system without written approval of the Board of Health. D. Each unit, in addition to the above, shall be in conformance with all state and local laws and/or regulations, and an affidavit attesting to the same shall be submitted to the Board of Health.
Dennis, Mass., Code of Bylaws CH. 242 § 242-10 governs the conversion of seasonally used buildings to year-round or extended-use occupancy within the Town of Dennis. Under this rule, no such conversion, alteration, or change of use may proceed unless the property's septic system already meets or can be upgraded to meet Massachusetts Title V standards (310 CMR 15.00), and each living unit satisfies the state Sanitary Code's minimum habitability standards (105 CMR 410.00) as well as all applicable local regulations. The Board of Health must receive an affidavit confirming compliance with all state and local laws before it may approve any related permits.
Plain English — not legal advice.
Property owners and managers considering a seasonal-to-year-round conversion under CH. 242 § 242-10 generally ensure that the existing septic system is evaluated for Title V compliance before any work begins, and arrange for any necessary upgrades if the system does not already meet 310 CMR 15.00 standards. Compliant operators also verify that each living unit meets the minimum habitability requirements of 105 CMR 410.00 and Dennis's local housing regulations, and they do not proceed with remodeling or additions that would increase septic system usage without first obtaining written Board of Health approval. Submitting a completed affidavit attesting to full compliance with all applicable state and local laws is a required step before the Board of Health can issue permits under this provision.
General guidance for property managers — not legal advice for your specific situation. Consult an attorney for advice on your case.
Tenants living in or considering a unit that has undergone a seasonal conversion in Dennis should be aware that CH. 242 § 242-10 establishes baseline protections, including the requirement that each living unit meet the minimum standards of fitness for human habitation set out in 105 CMR 410.00 and that the septic system comply with Title V. If a tenant believes a converted unit does not meet these standards, one general path is to raise the issue with the Dennis Board of Health, which is the body responsible for reviewing compliance and approving permits under this provision. Tenant-rights organizations and local housing agencies can help residents understand what documentation or inspections may be relevant to a habitability concern.
General guidance for tenants — not legal advice for your specific situation. Consult a tenant-rights organization or attorney for advice on your case.
Generated November 11, 2026 — auto-generated, not yet human-reviewed. See /transparency for methodology.
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