Deck Questions, Answered

Typically, if the deck is more than 30 inches above grade or attached to the house. In West Valley City, permits come from the Building Inspection Division. In Kearns, they go through the Greater Salt Lake Municipal Services District. We confirm requirements with your city before work starts.

Below the frost line. Around the Salt Lake Valley, cities publish a 30-inch frost depth (West Jordan's design criteria are one example), so footings go below that.

Under the IRC, guards are required once a walking surface is more than 30 inches above grade, with a 36-inch minimum height.

Yes. Salt Lake City's code sets a minimum ground snow load of 28 psf at lower elevations, and Utah State University's snow load map gives site-specific values.

The 2025 Cost vs. Value report puts a wood deck addition at about $18,300 and a composite deck addition at about $25,100 nationally. See our deck cost guide for sizes and cost factors.

No. Estimates are free.

The same report estimates a wood deck recoups about 95% of its cost at resale and a composite deck about 89%.

Wood costs less up front but needs regular sealing or staining. Composite costs more but needs much less upkeep. Composite decks →

Trex's limited residential warranties run 25 years (Enhance), 35 years (Select) and 50 years (Transcend and Signature).

InterNACHI puts deck planks at about 15 years and structural wood at 10-30 years, depending on climate and care.

Often, if the frame, ledger and footings are sound. We'll tell you honestly at your estimate. Deck repair →

Soft boards, a railing that moves, loose stairs, and any gap or rust where the deck meets the house.

West Valley City, Taylorsville, Kearns, Magna and West Jordan.