Dundurn National Historic Site is a prominent historic house in Hamilton, dating from 1835. This Regency style mansion was built as the home of Sir Allan Napier McNab. ERA’s work at Dundurn includes underpinning of foundations walls, repointing and waterproofing and below-grade drainage to prevent periodic floods in the basement. Extensive archaeological work was done to document the remains of a previous structure on the property dating back to the War of 1812.