The 5,000-square-foot house on the corner of Champa and 26th streets was once the pride of the Curtis Park neighborhood, a circa 1880 Queen Anne-style home that was one of the largest Victorian-era houses in the city. James Mathews, an ore and bullion broker, was the first owner; Isaac Gotthelf, a merchant and legislator, bought the place in 1890. Over the years, though, the home deteriorated into a warren of tiny apartments inside and a horror show outside, its mansard roof crumbling. Colorado Preservation Inc. bought the property last year and started a massive renovation project in January — a project that's already brought twelve jobs to the historic neighborhood, and will be a real landmark.