A seller usually has no fixed legal deadline to accept an offer unless the offer itself includes an expiration date. In practice, many sellers respond within 24 to 72 hours , and a common offer deadline is 48 hours or sometimes 1 to 3 days.

What controls the timing

The biggest factor is the offer wording: if the buyer includes an expiration time, the seller has to act before that deadline to accept, reject, or counter. If there is no deadline, the seller can take longer, though market norms still push for a fairly quick response.

Typical real estate timing

  • 24 to 48 hours: common in competitive situations.
  • 48 hours: often treated as a standard response window.
  • 1 to 3 days: a very common practical timeframe.
  • A week or more: possible, especially if the seller is slow or the deal is complicated.

What to do if you are waiting

If the seller has not responded, the offer may still be alive until it expires, so check the deadline in writing. If there is no deadline, your agent can usually follow up and ask for a response or submit a new offer with a firm expiration.

Simple rule of thumb

If you want a fast answer, include a clear expiration time in the offer. Without that, the seller may have time to think, compare offers, or wait for better terms.

TL;DR: A seller usually does not have a mandatory acceptance deadline, but most offers get a response within 24 to 72 hours , and many buyers set a 48-hour expiration to keep things moving.