I pass this house all the time, on the east side of South Clemens Avenue between Michigan and Prospect. Its front walk is marked “KLH” and it is so neat and central that I have come to think of it as the house’s monogram.
It seems that it may be the mark of KLH Contracting, a home remodeling company in Pinckney. Unfortunately, their web site doesn’t give a company history. Open Corporates has an incorporation date of February 3, 2016.