From Barnettsville's 1795 courthouse to an 1830 incorporation
Scotch-Irish settlers from Pennsylvania founded the community first known as Barnettsville in the 1750s, and its first courthouse went up in 1795, three and a half decades before the Town of Lancaster was formally incorporated in December 1830. Architect Robert Mills, later known for the Washington Monument, designed the jail completed in 1823 and the courthouse completed in 1828 that's still in continuous use today.
What a courthouse built in 1828 tells a basement inspection
Property near Lancaster's Mills-designed courthouse core has nearly two centuries of grading and drainage history layered under it, compared with the town's more recently developed edges. A waterproofing assessment downtown should account for that depth of prior construction rather than treat every Lancaster address the same way.
Basement waterproofing paths for a Lancaster property
What to tell us about a Lancaster basement or crawlspace
Let us know whether the property sits near the historic courthouse core or in a newer part of town, the foundation type, and when water problems first appeared. That helps a provider judge how much of Lancaster's older grading history is relevant.
Red clay under nearly two centuries of Lancaster grading
The same red clay found across York and Chester counties runs under Lancaster's courthouse district, and two centuries of incremental grading changes have layered on top of it. Older downtown properties in particular should have current drainage checked against whatever historic grading is actually still in place.