Founded in 1859 as the first permanent settlement in the Pikes Peak region, Old Colorado City predates Colorado Springs itself by more than a decade. The 80904 corridor running along West Colorado Avenue from 24th Street out to 31st preserves a residential pattern that is genuinely rare in the West: continuous occupancy since the territorial era, with housing stock layered across six distinct construction eras. You can walk a single block off Bancroft Park and see an 1890s miner's cottage sitting next to a 1925 Craftsman bungalow sitting next to a 1958 ranch infill.

The original-window problem here is a real one. Many of the Victorian-era cottages around Bancroft Park and the Midland corridor still carry their factory-original single-pane wood sashes, weighted-rope mechanisms, and lead-glazed putty beds. Some are over 130 years old. The wood itself, old-growth Douglas fir from a different forest era, is usually salvageable; the glazing system, putty, and single-pane efficiency are not. Inside-pane condensation on January mornings, drafts that move the curtains with the sashes closed, and noise bleed from Colorado Avenue trucks are the calls we take from this neighborhood.

The replacement strategy here is different from a Banning Lewis tear-and-swap. Pre-1940 openings rarely match modern stock sizing, so almost every window is custom-ordered. For homeowners who want the historic profile preserved, Andersen 400 Series with simulated divided lites and the right grille bar width (typically 7/8" for Victorian, 5/8" for Craftsman) reads correctly from the street. SmartSun Low-E glass cuts the afternoon heat gain on west-facing rooms by roughly 65% — the difference between a Victorian parlor that bakes from 3pm onward and one that stays usable. Andersen 400 Series meets ENERGY STAR V7.0 Northern Zone with a U-factor at or below 0.22, which is what HB 23-1161 effectively expects for replacement windows sold in Colorado after 2024.

Pro tip for Old Colorado City homeowners: before pulling a permit for window replacement in any home built before 1940, check whether your block falls inside the Old Colorado City Historic District boundary. Properties inside the district need a Certificate of Appropriateness from the Historic Preservation Board if exterior profile, muntin pattern, or sash configuration is changing. The board generally approves period-appropriate replacements quickly, but a missed step adds weeks to a project. After more than a decade in the Colorado window industry we have learned to flag this in the first site visit, not the second.