Detached Garage Demolition in Boise: What to Expect

A guy in Boise's North End had me come look at his garage last spring. Single car, built sometime in the 1940s, sitting off the alley the way half the garages up there do. The roof had a visible wave in it and one side wall was out of plumb by a couple inches.

His question was the one I get most: is detached garage demolition a weekend with a sledgehammer, or a phone call?

For almost everybody, it's the phone call. Not because we want the work, though we do. It's that a garage isn't built like the stuff people usually tear down themselves.

A garage isn't just a bigger shed

A shed comes apart into pieces one person can carry. A garage doesn't.

You've got rafters holding sheathing, and that sheathing is usually holding two or three layers of asphalt shingles nobody ever stripped. One small single-car roof can put a couple tons of debris on the ground once it's down.

That's the part people underestimate every time.

Then there's the framing. Older Treasure Valley garages were built with real full-dimension lumber and nails that have had eighty years to seize up. It doesn't pry apart politely.

It comes down in sections instead, and sections are heavy and they don't always fall where you'd like.

Almost every garage around here has power run to it, too. Sometimes it's a proper buried feed off the house panel. Other times it's an extension cord stapled along a fence that somebody's dad ran in 1986.

You need to know which one you've got before anything gets swung.

Permits and the part nobody wants to think about

Do you need a permit to tear down a garage? Yes. It's a structure, and structures need a demolition permit pulled before they come down.

How that goes depends on where you live. Boise, Meridian, Nampa and unincorporated Ada or Canyon County each run the process a little differently, and Eagle, Star and Kuna have their own quirks.

If your place sits in a historic district, and a good chunk of the North End does, expect an extra review step on top of that.

Older buildings bring up asbestos. Anything built before the late 1970s can have it in the siding, the roofing felt, or old mastic on the slab.

Sometimes a survey clears it in a day. Other times it changes how the whole job gets handled. Either way, it's not something you want to discover after the walls are already down.

We pull the permit and handle the utility disconnects as part of the job. Cutting and capping the power isn't a homeowner task, and Idaho Power works on their own schedule, which is a real reason not to start swinging just because you had a free Saturday.

Heads up: Before demo day, go look up in the rafters. Nine out of ten garages we tear down have something stored on loose boards laid across the joists, and about half the time the owner forgot it was up there. Old skis, boxes of photos. A wedding dress, once.

What detached garage demolition actually costs

We price by volume, meaning how much truck space the debris fills. You get a firm number at the free on-site estimate, before we touch anything, and nothing gets added later.

Two things move that number more than anything else. How much material is sitting there, and how hard it is to reach.

A garage that opens onto an alley in the North End or an older Nampa neighborhood is about as good as it gets. We back right up to it and load.

A garage tucked behind a house on the Bench, with a narrow side yard and a six-foot gate, means everything gets carried out by hand. That takes longer, and longer costs more.

The slab is its own decision. Plenty of people keep it as a patio pad or a spot to park a trailer. Others want it gone so they can put in lawn or a garden.

You can also split the difference and pull just the apron at the alley. Worth deciding before we come look, since it changes both the plan and the price.

How long detached garage demolition takes

Most single-car garages are down, loaded and hauled in one day. A two-car with the slab coming out usually runs a day and a half to two.

Scheduling moves fast too. Demolition jobs typically go on the calendar within a few days of the estimate, once the permit's in hand.

Season matters more than people expect. Summer here is hot and bone dry, so we keep the debris wet to keep dust out of the neighbors' open windows.

Winter is the harder one. Frozen ground turns footings and slab removal into a slow, ugly job, and if you're planning to plant anything in that dirt afterward, waiting for spring is usually the smarter call.

Not all of it goes to the landfill, either. Metal roofing, old wiring and appliances get recycled, and decent lumber gets set aside when somebody wants it.

The rest makes the run out to Ada County.

The bottom line

A detached garage is heavier, more structural and more paperwork than it looks from the alley. One day with the right crew and equipment beats three weekends and a rented trailer, and you won't spend any of it wondering whether you just cut a live wire.

If you've got one that's seen better days, give us a call at (208) 593-2877. We'll come look, tell you straight what's involved, and hand you a firm price. No pressure either way.