Housing math, made visible.
Free calculators and maps for the financial questions that come up when you're thinking about buying, renting, or moving.
Calculators
Should you buy a house — or rent and invest?
California-focused calculator with realistic taxes, costs, and growth assumptions.
Open calculator →Bay Area neighborhood maps
Hover any neighborhood to see whether buying or renting wins for that area's typical home price and rent. Click for the full breakdown.