Serving Maryland since 1987 Allmaster Builders, Inc. has been serving Maryland since 1987. We have performed all types of home improvements including decks, room enclosures, basement remodeling, basement waterproofing, structural repair, room additions and much more. We are privately owned, licensed, bonded and insured. Our, President John Locantore has been in the construction and home improvement industry for more than 40 years. He has spent more than 16 years training and consulting in the basement waterproofing and structural repair industry. John has also testified as an expert witness in both Maryland and Virginia. His honest approach and competitive pricing has accumulated many satisfied customers throughout the years.