I have not yet determined who built this stately townhouse at 429 West Walnut St. Lancaster, PA. Many of the other townhouses in this block were built in the 1870s and 80s by Barton B. Martin as rental / resale properties. Barton Martin built the houses here at 412 to 422 West Walnut St., as well as the homes at 432 to 450 West Walnut St.
Barton Martin was a lumber and coal dealer / real estate developer who built the house known as West Lawn nearby for his family's home. That Martin home, at 407 West Chestnut St., is one of Lancaster County's finest examples of Second Empire architecture.