Enfield, Conn., Code of Ordinances ch. 14, art. IV § 14-177

(a) The town, through its property maintenance inspector, shall serve written notice to the person responsible for the blighted premises. The notice may be hand-delivered or mailed by certified mail, return receipt requested to the last known address of the owner, or such notice may be served by any other method authorized or required in Connecticut. A copy of the notice shall also be sent to the lien holder(s) of the property per G.S. § 7-148gg. Notices shall:
(1) Be in writing.
(2) Set forth the violations of this chapter that are causing the premises to be considered a blighted premises.
(3) Specify a final date for the correction of any violation.
(4) Contain an outline of remedial action, which if taken, will affect compliance with the provisions of this chapter pursuant to the current violation and any appeals process.
(5) State that the penalties and enforcement provisions of this chapter will become effective on the final date set for the correction of any violation.
(6) State that the town, its employees, its designated agents and/or its contractors may enter the premises to remediate exterior blighted conditions and that the costs of such remediation shall constitute a lien on the premises.
(b) Such notice shall state that the violation(s) shall be corrected within 30 calendar days. If the owner fails within that time to correct the violation(s) or provide a written plan of correction that may include a bona fide purchase and sale agreement which addresses the blighted condition that is acceptable to the property maintenance inspector, the property maintenance inspector property maintenance inspector may issue an enforcement citation as specified herein. Notwithstanding the foregoing, any violation which pertains only to grass, weeds, or similar growths reaching a height greater than 12 inches, or the accumulation of persistent garbage, refuse or trash shall be corrected within ten days.
(c) If the owner or other person responsible for the blighted premises cannot be ascertained or does not accept delivery of the written notice, the notice shall be published once in a newspaper having a substantial circulation in the town. The notice shall include the name of the last known owner of the real property upon which violation has been found and the address of the real property.
(d) Notwithstanding the foregoing, the town manager or his/her designee may elect to first provide informal verbal notice to the person responsible in an attempt to resolve the matter prior to formal written notice being sent.
(e) If the property owner disagrees with a notice of violation issued pursuant to section 14-172 (3)c of this article, it is the owner's responsibility to provide the property maintenance inspector with a letter from a licensed arborist, on the arborist's letterhead, stating that the tree(s) in question are not dead, decayed, diseased, or damaged. The letter must be received by the property maintenance officer within the corrective time period set forth in the notice of violation.