Add 60 SF (6′ X 10′) mudroom on a crawlspace foundation with steel siding, aluminum soffit and 30-year architectural shingles. Include drywall of interior walls and ceilings, insulation at exterior walls and luxury vinyl tile floor. Includes new wood window and exterior doors. Add electrical to code. Also include ceiling and exterior lights. Includes built-in cabinet at new entry.
NOTE: Assuming existing forced-air heating system is adequate for additional load.