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STAFF REPORT • CONCERNING APPLICATION FOR A CERTIFICATE OF APPROPRIATENESS Date: March 9, 2018 Application Number: 2018-0306A Property Location: 50106 Bittersweet Trail Architectural Style/Date/Architect or Builder: L-Plan/Italianate/1877/William C. Kownover Farm Property Owner: David A. Visser Landmark or District Designation: Local Landmark, Ordinance No. 117-76, amended 11-1987 Rating: Outstanding DESCRIPTION OF STRUCTURE/ SITE: The Kownover farmhouse is a 2'/2 story brick house with asphalt shingle roof and stone foundation. 2/2 wood windows with segmental arches, with keystones, brick heads, and stone sills, and two bay windows on the front. A portico with flat roof supported by square wood columns covers the front entrance. The property has a summer kitchen of brick to match the house, and a large gable -roof barn. ALTERATIONS: Original bay windows roofs have been replaced with higher pitch and wood shakes. Aluminum storm windows have been added. There is a small addition to the rear of the house. Between May 2012 and December 2014, the front portico was removed without a COA. The barn was taken down in 2014 without a COA. Green space at site of former barn has been developed with a stone wall built of original barn foundation stones. COA 2017-0403A approved installation of egress window on north side of house and landscaping to screen window and adjacent A/C unit, creation of dumpster pad along south side of drive adjacent to road, to be enclosed with fence, gates, and evergreens, and extension of gravel driveway. COA 2017-0501 approved installation of 6'H dog-ear wood stockade panels along north property line. Appropriate shade tolerant plants and/or junipers to be • installed as necessary. COA 2017-1204A was tabled indefinitely by the Historic Preservation Commission — the absence of a decision on the application resulted in the issuance of an approved COA on January 18, 2018. APPLICATION ITEMS: "Windmill installation (See Attached)." DESCRIPTION OF PROPOSED PROJECT: Applicant seeks approval for the installation of an approximately 40' windmill of unknown manufacture. Applicant is in dialogue with two individuals regarding purchasing their vintage windmills. Photographic evidence indicates the presence of a windmill at the site, set either to the east or the west of the former barn. The manufacture and height of the original windmill at this site are unknown at this time. PRESERVATION SPECIALIST REPORT: STANDARDS AND GUIDELINES: Group B A. Maintenance The maintenance of any historical structure or site shall in no way involve any direct physical change except for the general cleaning and upkeep of the landmark. The Commission shall encourage the proper maintenance of all structure or sites. B. Treatment Treatment shall be defined as any change of surface materials that will not alter the style or original form. Such improvements include re- roofing, glazing, or landscaping lawns and may involve a change that can potentially enhance or detract from the character of the landmark. A treatment change of any surface whether on the landmark or in its environment may require a Certificate of Appropriateness if it significantly alters the appearance of the landmark. Although these kinds of changes may not require a Building Permit, a Certificate of Appropriateness may be necessary. The commission should review the proposed treatment for character and style consistency with the original surfaces. C. Renovation and Additions Renovation is the modification of a structure, which does not alter the general massing while an addition, is a change in mass. A • modification, which involves the removal of a part of the landmark, should be considered under demolition (see demolition). Additions to landmarks should not detract from the original form and unity of the landmark and should not cover singular examples of architectural detail. Additions to landmarks should be added in a manner that does not disrupt the visible unity of overall appearance of the site. The proportions, materials and ratios of the existing structures should be carried through in the additions. Care should be taken not to change or alter the following: 1. Structure—Necessary structural improvements, where safety demands should be accomplished in such a way as to cause minimal visual change to the original style and construction.