Window Tax?

Bit of an unproductive troll around Carlisle shooting the bits & pieces. I glanced back over my shoulder at one point & spotted this one.
Considering that window tax ... "......... was introduced in 1696 and was repealed in 1851, 156 years after first being introduced."
it's taken them a fair while to re-glaze?

Just could not resist a retrospective Frog.
Reckon I'm Frogophylic?