Updated May 2026 by Corey Cohen, The Roebling Team If you're trying to figure out what your Manhattan apartment is worth, three things matter more than any automated estimate: Floor, light, layout, line. Two apartments in the same building with the same square footage can vary 20% in value based on these factors alone. No automated tool captures this. Recent in-building comps. A real valuation starts with what's actually sold in your building in the last 12 months — not the n