Under California law, “benefit of the bargain” damages for breach of a real estate contract is the difference between the actual value of what the plaintiff got and what he expected to receive. If Joe breaches his contract to buy a house from Sam for $100,000, and Sam later sells it for $80,000, Sam is entitled to damages of $20,000.
In a recent California decision parties contracted to buy & sell a commercial property, with environmental and financial contingencies in the contract. There was a problem with subsurface contamination, and it was unclear what the cleanup cost would be.
The buyer unexplainably released all financing contingencies, though they apparently did not have a firm commitment from the bank. The lender said they would not fund the loan due to the environmental contamination. The seller ended up selling to a third party for less, and in the process lost out on a 1031 exchange.