Cross T Construction • Cross T Construction is a full service residential custom building company in Swan Valley Idaho. Our business focus is on meeting our clients’ needs while operating our business with high standards for quality. Our Code of Ethics keeps us focused and our clients satisfied. Our solid reputation is built on providing quality construction with unique creation of our client’s vision. We can use an existing plan or work with your architect, or we can make referrals to designers or offer in-house design options.