Owners often believe that because work was done on their project a year or more ago they have no write to file suit against a contractor when the work proves to be defective. However, a lawsuit on the written contract can be filed up to 4 years after the contract was entered into. Further, the statute of limitations for patent defects (once that could reasonably observed after the construction takes place) is 4 years and the statue for latent defects (once that could not reasonably be observed i.e. a kinked pipe in the wall that starts leaking but no one sees it until there is mold on the drywall) is 10 years.
So, if you are experiencing construction defects within these time frames you can still file a lawsuit against the contractor.