Lawrence Code of Ordinances ch. 15.12 § 15.12.300

A. If a written petition for a hearing is not filed in the office of the board of health within seven days after an order of condemnation of any dwelling or portion thereof has been issued, or if after a hearing the order of condemnation of a dwelling or portion thereof has been sustained in any part, the dwelling or portion thereof so affected by the order as issued or as so sustained shall be placarded by the board of health.
B. No dwelling or portion thereof which has been condemned and placarded as unfit for human habitation shall again be used for human habitation until written approval is secured from, and such placard is removed by, the board of health. No person shall deface or remove the placard, except that the board of health shall remove it whenever the defect or defects upon which the condemnation and placarding action were based have been eliminated.
C. If any person refuses to leave a dwelling or portion thereof which has been ordered condemned and has been placarded in accordance with sections 15.12.260 through 15.12.300 , he or she may be forcibly removed by the board of health, or by local police authorities on request of the board of health. (See sections 15.12.260 through 15.12.280 .)
D. The board of health may undertake to demolish any dwelling, an order for whose destruction was properly served on the owner and every mortgagee of record in accordance with the requirements of notice and hearing in sections 15.12.260B. through 15.12.280 , and a claim for the expense incurred by such board in so doing shall constitute a debt due the city or town upon the completion of the work and the rendering of an account therefor to the owner of such structure, and shall be recoverable from such owner in an action of contract. Such debt, together with interest thereon at the rate of six percent per annum from the date such debt becomes due, shall constitute a lien on the land upon which the structure was located if a statement of claim, signed by the board of health, setting forth the amount claimed without interest, is filed within 90 days after the debt becomes due with the register of deeds for record or registration, as the case may be, in the county, or in the district if the county is divided into districts, where the land lies. Such lien shall take effect upon the filing of the statement aforesaid and shall continue for two years from the first day of October next following the date of such filing. Such lien may be dissolved by filing with the register of deeds for record or registration, as the case may be, in the county, or in the district if the county is divided into districts, where the land lies, a certificate from the collector of the city or town that the debt for which such lien attached, together with interest and costs thereon, has been paid or legally abated. Such collector shall have the same powers and be subject to the same duties with respect to such claim as in the case of the annual taxes upon real estate; and the provisions of law relative to the collection of such annual taxes, the sale or taking of land for the nonpayment thereof, and the redemption of land so sold or taken shall apply to such claim.