Ann Arbor — Ch. 105 Housing Code § 8:514

(1) The time limit set for the correction of any violation not prohibited by subsection (3) below may be extended by the department for a reasonable time upon a showing that the person ordered to make the repair has made a good faith effort to comply with said order, and that the repair could not have been accomplished within the time originally set, or, in the case of owner-occupied 2-family dwellings upon the showing of unusual hardship. Unusual hardship can only be applied to the owner-occupied portion of the building. Each such extension shall be recorded in the file for the affected property and such record shall include a description of good faith effort, inability to accomplish within the original time, and hardship relied upon in granting the extension. No single extension shall exceed 60 calendar days unless weather conditions would prohibit correction of the violation within 60 calendar days.
(2) "Good faith effort" is defined as a substantial portion of the work completed or:
(a) The owner or agent has a signed and completed contract with a company that is capable of making the repair, and the contract was signed at a time that would have allowed the work to be completed in the time allowed by the department had not weather or natural disaster prevented.
(b) If the owner or agent or his/her staff is capable of making the repair, the owner or agent must present to the department a paid invoice or delivery order for the materials needed to make the repair and the materials must have been ordered at a time that would have allowed the repair to be made in the time allowed by the department, had weather conditions or natural disaster not prevented.
(3) Time extensions shall not be granted by the Building Official in imminently hazardous conditions, such as, but not limited to, gas leaks, no utilities, no heat in winter, unsafe fire egress, etc.
The Planning and Development Services Unit or the Housing Board of Appeals may grant a time extension due to the owner's inability to gain access to the unit if the owner has requested, by a letter sent by certified mail, reasonable times when the work can be done.
(4) The total time for making repairs of violations not constituting a hazard to health and safety, including the initial time and extensions by the Building Official shall not exceed 6 months.
(5) Additional extensions of reasonable periods, not to exceed 3 months, may be granted by the Housing Board of Appeals in cases where a person ordered to correct a violation has not been able to do so within the time set by the Building Official, despite all diligent effort. A bond may be required to be posted with the Building Official if the board determines one necessary to guarantee completion of the repairs. The bond amount shall be determined by the board based upon the repairs required by the housing bureau.
(6) Extensions must be sought within 1 working day after the expiration of the preceding time period, and decisions as to whether extensions will be granted must be made within 2 working days after the preceding time period. The Building Official shall keep written records of the reasons for granting time extensions.