Depending on where you live… there are a lot of modular barns, like Barnmaster and MD, sold used on Craigslist. There are some deals. When people’s homes get sold or foreclosed, they sometimes sell off unused barns and sheds to realize extra money… or whatever reason.
This can work if you live out west where there are a lot of these modular barns. If you find one, you’ll need an experience barn mover. The biggest issue can be permitting: if you must permit the barn on your property, you can sometimes buy the original engineering plans from the barn maker, as they probably did them the first time they sold the barn.
In my experience, you can usually pay quite a bit less than the asking price, but do plan on spending AT LEAST what you spend for the barn for having it dismantled, moved, and set up on concrete ribbons with slabs for tack, etc. Electrical and plumbing will be additional… but if you have construction-minded family members, most of this is not very hard: these things go together kind of like adult legos.
Rule of thumb for me is $1,000 to $3,000 per stall space for a used barn. Center aisle is more expensive than a shed row, FCP and MD most expensive, Barnmaster OK, Port-A-Stall were good in their day but unless it’s in Arizona, likely very rusted. (Unless it sat for 20 years on someone’s back yard, never used… which happens!) Keep your wits about you and disregard what someone cries that they paid for the barn- they probably did pay that much, but you don’t have to.
You’ll need to look at the panels carefully for the rust issues, and if you buy an assembled barn, take TONS of photos before and during teardown. Consider putting ribbon footings for a new barn that are about 4" high, for the barn to sit up on- it keeps the wall panels from the dreaded pee contact.
Do look for condition of the barns: the biggest thing is the barn panels get rusted out along the bottom from contact with damp bedding. If they are bad, and the frames are really rusted, keep looking. If the damage seems minimal-ish, you have options: flip the walls over so you have fresh walls at the bottom, Bond-O the damaged spots (auto-body filler) and/or flip the walls and then cut the 12" or so of damaged wall off, so you have 7’ interior walls. This actually makes a nice barn because the inside ventilation is much better!
This route is not trouble-free and your concrete, plumbing, and electrical are still pricey, but… you can sure whittle the cost of the barn down if you get lucky. Be patient- I have seen a lot of good deals and am now (as an insomniac) always stumbling across interesting barns.
I’ve built our boarding barn out of lots of recycled things… it’s possible!
You’ll find these modular barns in California and Arizona primarily, on Craigslist. If you live very far from those areas, then freight could be prohibitive and you might not have the snow load you’d need on the roof. I go to 'Farm and Garden" then search for “barn” and check “search titles only” and “has image” on the left, and then I check all the nearby areas I can. This saves time. You can also use www.onecraigs.com for national searches.
Sometimes you will want to look by major areas: in CA I look in Sacramento, Los Angeles, Inland Empire, and San Diego. Arizona I do Phoenix. Nevada I do Las Vegas and Reno.
Here’s a few current ads:
-8 stall MD barn with 16’ center aisle, 2 tack rooms, wash racks, cross ties. $29,500 http://modesto.craigslist.org/grd/5611497995.html
-7 stall MD Lonestar (4’ walls with pipe tops, great in warm areas) shed row, tack room, 3 12 x 20’ foaling stalls, big covered porch on part of it- nice design. $18,500 http://sierravista.craigslist.org/grd/5627298056.html
-4 stall MD shed row with 4 big stalls, feed room, cross tie area, etc. looks almost new. $19,500 http://fresno.craigslist.org/grd/5584839940.html
-4 stall Barnmaster shed row with feed/tack. Decent condition, looks like. $11,000 http://sandiego.craigslist.org/csd/grd/5618590280.html
-8 stall FCP shedrow. This barn was for sale earlier- looks like someone maybe bought it (its disassembled) and can’t put it up due to zoning or something. It looks almost new. No price given. http://inlandempire.craigslist.org/grd/5585352015.html
10 stall center aisle, they bought it used so it’s disassembled. Tongue and groove wood, looks decent. 12’ aisle. Asking $17,000. http://inlandempire.craigslist.org/grd/5539691535.html
If you watch the ads, you will find these barns… Happy Barn Hunting!