Agenda - 10-05-2010 - 4g - Laserfiche WebLink

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�� ��: i III. Historic Buildings (Maintenance and Exterior Changes) 2 3 These design standards are intended to assist property owners and HPC members to 4 identify the elements that make Local Landmark properties significant and to provide 5 directions for protecting those elements. The HPC will focus on exterior changes to 6 buildings and contributing natural or landscape features on individual local landmark 7 properties or in local historic districts.4 This section targets three key elements of design 8 review for historic properties: 9 ■ how to maintain a building's historic fabric; io ■ how to modify the exterior of a Local Landmark building for an addition or update 11 without destroying its character; and 12 ■ how to attach a new addition to an existing building in a way that leaves the 13 original structure intact and allows for the new section to be removed at a future 14 date (reversibility). 1s 16 A. GENERAL MAINTENANCE 17 Property owners are ` � t_��, �, expected to maintain the � .�_ buildings on individual ' Local Landmark properties �� or within Local Historic ~"' Districts particularly buildings identified as "contributing" in the �:_. .- - - �� y�� ;�� ;� �� . application materials ; - ,� prepared as part of the �=`� �k � � � designation process. 4 � �� ;� �� ,�:-�'� ��.�n;��_ �.� � �� . . 3�� Building elements should y��a ��°��,,,,� �� ;. � ° �;�,._. --= be maintained and � ` " �' °'"'"��'" - repaired in a good 32 workmanship manner using traditional methods. Proper maintenance includes 33 routine inspections of the uninhabited areas as well as the living spaces. Attic 34 and crawlspace areas should be insulated and ventilated. Most maintenance 3s work can be completed with staff approval; however, large-scale projects or 36 substantial renovations will be subject to the formal Certificate of Appropriateness 3� (COA) process. The COA application should describe the proposed work and 3s specify the proposed construction methods to complete the work. Certain 39 techniques that are known to be detrimental to historic buildings, such as the use 40 of grinders for paint removal and sand blasting for masonry cleaning, should not 41 be used. Exterior surfaces such as wood siding and metal roofing, which are a2 traditionally painted, should be repainted in regular intervals usually from seven to 43 ten years. Painted surFaces should be properly prepared prior to the application 44 of new paint. Heat guns and other paint removing apparatus should be used with 45 care and proper ventilation to prevent risk of fire damage. Depending on the date 46 of the existing paint, homeowners may need to utilize lead paint abatement 47 practices. (Contact the State Historic Preservation Office Restoration Branch, 48 listed in Appendix F, for more information about lead paint removal.) 49 4 The HPC will typically limit its review to exterior features, but may comment on changes to interior features when the property owner authorized such review to the HPC during the Local Landmark designation process. 9/27/2010 Draft Orange County Design Standards 25