William Falkenstein Improvements to the Home has been serving Northeast Philadelphia, PA, and New Jersey for 43 years, and that experience shows in the window and door installations we handle and custom jobs of any size. We're licensed, insured, and OSHA 30 and OSHA 10 certified, and we take on one job at a time so every project gets the attention it deserves. Whether it's a single drafty window or a full-home update, our team will walk you through the options and get it done right.