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Foggy glass and old sealed units are easy to miss and easy to negotiate, once you know to look between the panes for the date stamp. Here's what windows really cost.

The ten second check

What else is typical in a house this age?

Type the year the house was built and I will tell you what else tends to be true at that age, what it costs, and what to ask. One number, ten seconds.

A guess is fine. 1965, or just the 60s.

Anything worrying you? Tap any that apply, or skip it.

Free. No account. Educational and impartial, not a home inspection.

Failed window seals & sealed-unit age

Foggy glass and old sealed units, find the date stamp between the panes.

$400 to $2,000Address soon

Single pane and old aluminum frame windows

Original single pane glass and cold aluminum frames quietly inflate every heating bill.

$800 to $1,500Address soon

Bedroom egress windows

Could an adult climb out? The window that decides if a '+1 bedroom' is real.

$3,000 to $12,000+Address before purchase

Score a listing before you tour it

Casaroo reads any listing for the bones as well as the appearance, free, in seconds.

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