Here some background to my problem. I'm selling my home. The buyer had a professional home inspector go though our house. He found mostly little things but a couple more significant items too. One was a double floor joist had been cut during the original construction to allow for a stove vent ducting. We had no idea when we bought the house the joist was cut. The other is a problematic drainage issue in our back yard. Water just seems not to absorb well there. The buyer requested both item be corrected. I called the builder about the floor joist and they came out and fixed it…. I thought. I never actually climbed under the house to inspect it myself. When the buyer had it re-inspected, we found that the builder installed a pier to support the joist but he never placed a concrete footing under the pier and the inspected says it is not acceptable under code rules. As for the back yard, we found and replaced a leaky sprinkler head but the yard is still wet in areas. The buyer has an estimate from a landscape contractor that says a french drain is needed and back fill dirt to slope away from the house. He also wants the grass replaced with sod.

Enough of the background. Here's my question. The buyer contact indicates that repair contingency of $3000. His landscapers estimate to correct the yard is for $3300. We don’t think the yard problem is that big a deal nor should it cost that much. Can he break the contact even if we agree to fix it and get the floor joist corrected too?