We are encountering a situation at the moment where our builders draftsman has made an error with the plan. the contract plans we have already signed at the end of November shows floor cieling tiles in bathroom, ensuite and laundry and an increase of the kitchen splash back to behind the rangehood. Now the builder has sent amended plans to show what it should be. My question is because we have already signed contracts with the above and it wasn't picked up prior to contract are we eligible for reimbursement, if the tables are turned they would charge us to make alterations after contract signing.