Window replacement costs in Harrisburg

Harrisburg's historic district guidelines sort replacement windows by what they're made of. Real wood, or a real wood composite like Fibrex, counts as an in-kind replacement for a wood window, and planning staff can approve it. Fiberglass, aluminum-clad wood and aluminum go to the Harrisburg Architectural Review Board, which looks at them case by case. Vinyl is the hard no. The guidelines call swapping historic wood windows for vinyl an inappropriate alteration, and say requests to install vinyl in the city's municipal historic districts are almost always denied.

They also flag a labeling trap. Many windows sold as "composite" are actually vinyl, the guidelines warn, so ask exactly what's in the frame before you count on staff approval.

You don't have to give up comfort to stay in-kind. A replacement can use insulated glass instead of single panes, and simulated divided lights instead of true ones, as long as it copies the original pattern of panes and the size and profile of the muntins.

Plenty of the city fits the old-house picture. About two in three Harrisburg homes were built before 1960, by the Census Bureau's count.