Howard Pierce Sr. and P&P Construction Inc. have served Maryland, Pennsylvania, and Delaware since 1979 with various excavating services. P&P Construction is an excavating contractor specializing in residential and commercial site work. We are fully licensed and insured, and have worked with many homeowners, builders, and general contractors on various projects through the years. P&P Construction has always made sure each job is completed as if it was for us.. Septic Repairs and Installations,Septic Tank Cleaning and Pumping,Excavating and Grading,Hauling,Demolition,Residential and Commercial Site Work.