[Res. No. 135-90, § 5(a), 11-27-1990]
If the historic preservation commission believes that a group of adjoining properties possesses historic interest to the community as a whole, but they do not meet the criteria set forth in this chapter relative to the establishment of historic districts, the commission may recommend to the common council the establishment of a historic interest district.
[Res. No. 135-90, § 5(b), 11-27-1990]
Upon the recommendation of the historic preservation commission, the common council, if it finds that a group of adjoining properties possesses a historical interest, may, by majority vote, establish a historic interest district. No public hearings shall be required for the establishment of such district.
[Res. No. 135-90, § 5(c), (d), 11-27-1990]
(a) 
Once a historic interest district is created, the historic preservation commission shall have the power to review all building permit or demolition applications received by the building inspector related to properties within the district. Within five days of receipt of a building permit or demolition application for a structure within a historic interest district, the building inspector shall deliver a copy of the application to the chairman of the commission. The commission shall, within seven days, review the application, and if the commission believes that the work described on the application may have an impact on the subject property or the historic interest district in part or in whole, it may, upon written notice to the building inspector with a copy mailed to the applicant for such a permit, make recommendations to the applicant as to how the applicant can complete the planned work without affecting or lessening the effect of the planned work on the historic interest of the structure or district. In making its recommendations, the commission shall be permitted to review all documents, drawings, or other materials submitted with the building permit application. However, it shall not be able to require the owner to provide additional materials unless the owner voluntarily agrees to do so. If the commission requests the opportunity to make recommendations, the building inspector shall not issue the permit for 30 days from the date of the original application, unless the commission shall consent in writing.
(b) 
If the commission does not act within the seven-day period after the building inspector has delivered the permit application to the chairman, the building inspector shall act in his ordinary course.
[Res. No. 135-90, § 5(e), 11-27-1990]
If a historical district, landmark, or monument is located within a historic interest district, the more stringent portions of the law related to the landmark, monument, or historic district shall apply to those properties. A landowner in a historic interest district may use the informal procedure set for in section 11-31; however, section 11-31(c) shall not apply.