How long is the contract signed between the property and the owner valid?

Legal analysis: the contract signed by the owner and the property has a time limit, usually two to five years. The specific term of the prophase realty service contract shall be agreed by the construction unit and the realty service enterprise, and the longest period shall be the date agreed by the owners' congress and the realty service contract selected by them. If the term of the realty service contract expires, the owners' meeting has not yet been established or the realty service enterprise has not been selected according to law, the original contract can continue to be performed until the new realty service contract begins to provide realty service.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 471 The parties may conclude a contract by offer, acceptance or other means.

Article 472 An offer is an expression of intention to conclude a contract with another person and shall meet the following conditions:

Specific content;

(2) The offeror is bound by the expression of will by indicating that he has accepted the offer.