With one subtraction: your home's current market value, minus everything you still owe on loans secured by the home. That is the whole formula — equity is the slice of the home you actually own, and it moves even when you do nothing, because both sides of the subtraction move.
Both sides of the subtraction, every month, from your own realtor or lender: the value estimate and the equity beside it, recalculated when you correct your home's facts from inside the update. Watching the pair move is how a homeowner knows — before a sale, a refinance, or a loan conversation — roughly where they stand, with no surprises left for the formal numbers later.
Homeowners are always free. Realtors pay $25/mo to join and lenders join at the $5/mo founding rate, at any book size, with no setup fee; sending messages inside HQ is a $100/mo unlock ($125/mo total for realtors, $105/mo total for lenders). A lender-sponsored realtor joins for $0.
Homeowner HQ is an AI-powered marketing department for agents and lenders — a relationship and revenue engine, not a homeowner database. A homeowner's record routes them back to their own agent; it is never sold and never shown to lenders.