NEW YORK CITY — New York City-based HAP Investments LLC is developing a new project at 284 Wadsworth Ave. in Washington Heights. Known as HAP 4.1, the six-story, 11,000-square-foot development will offer 10 one- and two-bedroom apartments and basement space. The project team will employ Insulated Concrete Form (ICF) wall system for building construction. HAP has selected Design AIDD Architecture to design the project. HAP is currently developing 11 other projects in Upper Manhattan and Chelsea as well as one in Jersey City, N.J.