What we do
Why eastern Idaho is different
Most deck advice online is written for a national audience, which in practice means it is written for somewhere warmer. Three local conditions change how a deck has to be built here, and all three cost money that a cheap bid quietly leaves out.
The frost line is three feet down
Pocatello's published design frost depth is 36 inches. Boise's is typically 24. That single number is the most consequential difference between a deck built here and one built four hours west.
Water in soil expands when it freezes. If a footing sits above the frost line, the ground beneath it lifts every winter and settles every spring — a cycle called frost heave. The deck does not fail all at once. It racks slowly: a post rises an inch, the frame twists, the ledger takes the strain, gaps open at the stairs, and a railing that passed inspection at build time is loose four years later. Homeowners usually blame the lumber. It is almost always the footings.
Digging to 36 inches across eight or twelve post locations is real labour and real concrete. It is also the first thing to disappear from a low bid. When you compare quotes, footing depth is the line to check before you look at the decking material.
Snow sits on it all winter
Bannock County design values put ground snow load in the 35 to 40 psf range, with Pocatello's roof snow load design figure at 35 psf. A deck is not a roof, but the loading logic is similar: snow accumulates and stays. Extended cold means it does not melt off between storms the way it does at lower elevation.
That matters for joist spacing, beam sizing and post spacing, and it matters enormously if you are putting a roof or a pergola over the deck. A covered structure collects and holds the load rather than shedding it. Pocatello's design wind speed of 115 mph adds uplift on top of that, which is why covered decks and patio covers here need proper connections rather than deck screws and optimism.
The sun is harder than the winter
Counterintuitive, but true. Idaho's dry climate is generally favourable for wood — decay pressure is far lower than in the humid Southeast. What gets decks here is ultraviolet exposure at elevation combined with severe daily temperature swings. Boards check, cup and grey out faster than the same product would at sea level, and finishes fail early on south and west exposures.
This has practical consequences for material choice and finish schedules that most national buying guides never mention. We go through it on the composite page.
Questions people actually ask
Do I need a permit for a deck in Pocatello?
Generally yes once the deck is more than 30 inches above grade at any point, and often regardless if it attaches to the house. Pocatello builds under the 2018 IRC with Idaho amendments. The permit is not the expensive part — the inspection is what protects you, because footing depth and ledger attachment are exactly the two things a cutting-corners builder hides. Full detail on the permits page.
Can a freestanding deck skip the deep footings?
The IRC does include an exception stating that decks not supported by a dwelling need not have footings extending below the frost line. That sounds like an easy way to save money, and contractors do sometimes propose it. Be careful: the exception is about code minimums, not about whether your deck will move. A freestanding deck on shallow footings in 36-inch frost country will still heave — it just heaves independently of the house instead of dragging the ledger with it. Whether that is acceptable depends on the deck. Ask your builder to explain the tradeoff rather than just quoting the exception at you.
How long does a deck take to build?
For a straightforward attached deck, most builders are on site a few days to a couple of weeks depending on size, height and how the footing dig goes. The longer variable is the queue. Deck demand here peaks in May and June every year without fail, and good builders are booked out well before that. If you want a deck for next summer, the time to book is late winter, not June.
Should I build it myself?
Plenty of people do, and a simple ground-level platform is a reasonable DIY project. Two things push a Pocatello deck out of DIY range faster than elsewhere: the footing depth, which is genuinely hard digging in rocky soil, and the ledger attachment, which is where most deck collapses originate. If your deck is elevated — and with walkout basements common here, many are — the structural consequences of getting the ledger wrong are severe. That is the part to hire out even if you frame the rest yourself.
When is the best time of year to build?
Late summer through early autumn is the quiet window and often the best availability. Spring is when everyone calls at once. Winter builds are possible but the footing dig gets difficult once the ground freezes, and concrete placement in cold weather needs precautions that add cost.