There is no magic number of days. A home listed for 30 days has not really been sitting. In a normal market plenty of homes take 60, 90, even 100 days to sell, and buyers coming out of the frenzy years forget what normal looks like. Leverage builds the longer a home lingers and the further its price sits above comparable sales, but how much less you can offer depends on where that asking price came from in the first place. Start by having your agent call the listing agent and ask how they arrived at the number. Sometimes real upgrades or a premium location justify it. Sometimes the seller insisted on a figure their own agent never supported. Then look at what similar nearby homes actually sold for relative to their original list prices. That spread tells you what a credible discount looks like, far better than any headline or round percentage. We would steer you away from the "write a disrespectful offer" advice floating around online. Anchor your offer to where you honestly believe the home's value is, and try to understand what the seller actually needs. An offer that solves their real problem, whether that is timing, a rent-back, or a clean close, can sometimes justify coming in lower than the comps alone would suggest. Pick a price you are comfortable with that also has a real chance of being accepted.