Name: Andy's Trenching (and Boring) Service. Descripton: DON'T RENT a trencher, when I will give you the price over the phone for me to DO IT FOR YOU. $185 is the normal price to trench a 1/4 acre lot,(front and back yards in the Salt Lake Valley). I work all over. I also have the ability to bore(drill) under most sidewalks and driveways. $30 per hole under normal 4 foot sidewalks and $10 a lineal foot for driveways. I have trenched Full-time for 15 years. Ask your neighbors-- see how they liked me. Call me and I will answer your questions. Also www.sprinklertrenching.com Rating of 5.0000 based on 6 reviews.