About Us

Established in 1993, LandMark Associates is an independently owned and operated business that provides appraisal, consulting, and marketing services for all property types throughout Southern Delaware. Our clients include law firms, consulting firms, accounting firms, developers, HOA's, real estate firms, government agencies and individuals. Our evaluation business has grown to include residential and commercial appraisals and consulting services to enable us to better serve our customers needs. Our services range from certified real estate appraisals to portfolio management. Our group of local appraisers have earned a reputation for preparing accurate and thorough evaluations in a diverse and rapidly expanding real estate market.

Our Company

All LandMark staff and associates reside in Sussex County, Delaware. We have combined real estate appraisal experience exceeding 80 years. Our staff also contributes extraordinary knowledge and experience in the construction, development and brokerage industries. Glenn T. Piper, CREA, President of LandMark Associates of DE, Inc., is the lead state-certified appraiser and is a licensed real estate broker, contributing over forty years of real estate experience. Mr. Piper has provided professional testimony in the Delaware Chancery, Family, & Superior Courts, as well as before various Sussex County Administrative Boards.

Our Staff

  • Glenn T. Piper, CREA - President 
  • Barbara Piper - Office Manager 
  • Wesley D. Piper - IT Manager/Appraiser Trainee

Our Associates

  • T. William Lingo, GREA 
  • Michael J. Tigue, CREA