Landscape Contractors & Designers in T Hornhill, Ontario

"We had an old upper/lower deck that we wanted replaced with an upper deck, and lower stone patio. Alterra was..."

"Ours was a challenging project, with a very narrow entry to our backyard in the very heart of the city. Scott and his..."

"I hired them long time ago and still the sprinkler system they installed works flawlessly. I highly recommend!"