Windermere House is in Middle Street, Lancaster, Lancashire, England.

In 1849–50 it was rebuilt and enlarged by the local architects Sharpe and Paley.

It was paid for mainly by public subscription, but the Sharpe family contributed £25 (equivalent to £3,000 in 2023)[3] towards it.

The plan is rectangular, with a small service wing to the rear.

The building is in two storeys, with a front of five slightly irregular bays.