LANCASTER (LNP) – The proposed 20-story Willow Valley Mosaic apartment building in downtown Lancaster won a pair of key city approvals on Tuesday, though several more remain before construction can begin. Lancaster City Council’s 5-2 vote allows developer Willow Valley Living to demolish two existing buildings on the South Queen and West Vine streets property and to build a structure with an appearance as proposed. Council took the advice of the city Historical Commission, which had recommended by a 6-0 vote last month that council approve the two “certificates of appropriateness” for the project, creating the county’s tallest building and costing more than $90 million to develop. The commission weighed in because the site is in the city’s Heritage Conservation District. The 147-unit building, for people ages 55 and up, would be on a site previously owned by LNP Media Group. Willow Valley Living would raze LNP’s former production building, built in 1982, and a former office annex, built in 1952. Willow Valley Living would save the historic former home of Jasper Yeates, also on the site.  Willow Valley has no timetable set for the demolition as the project must obtain two more city approvals.