6418 N Fairfield Avenue Rare opportunity to build on an oversized lot in an established North Side neighborhood. At 4, 219 square feet, this RT-4 zoned parcel on Fairfield Avenue is wider than a standard Chicago lot and sits on a quiet, owner-occupied block; the kind of street buyers actually want to live on. RT-4 zoning opens the door to 4+ unit multifamily building, with an FAR of 1.2 supporting roughly 5, 000+ square feet of above-grade building. Bring your architect. West Ridge location puts you close to Peterson and Western for shopping, dining, and CTA access, while keeping the block itself calm and residential. Solid bones on all sides of the block.