I’ve worked on both, and honestly, garages can be a real puzzle. The insulation issue is huge—most garages are basically iceboxes in winter and ovens in summer unless you really invest in proper materials. Attics, with a dormer, just feel more inviting from the start. Garages sometimes have weird steps or sloped floors that mess with the layout, and you often need to upgrade electrical and add windows for egress anyway. If you’re after that true bedroom comfort, I’d lean attic every time... unless your garage is unusually well-built or already insulated.
Attics definitely have a certain charm, but I’ve gotta say, garages aren’t always the villain here. Sure, you’re right about the insulation—most garages are basically “outdoor adjacent” until you throw a bunch of money at them. But I’ve seen a few where the bones were surprisingly solid. One client had a garage with a slab so level and thick, it was almost overkill. We just had to frame up a subfloor and add spray foam, and it was golden.
Attics, though, can be sneaky. Ever tried running ductwork through rafters that look like they were designed by an Escher fan? And then there’s the headroom dance—duck here, stoop there. Dormers help, but sometimes you’re still left with weird nooks that only fit a lamp and a single sock.
If I had to give a step-by-step: check your structure first (both spaces), then really look at how much you’re willing to invest in comfort upgrades. Sometimes the “easy” attic turns into a maze, and the “tricky” garage ends up being a blank slate. It’s almost never as straightforward as it seems on paper...
Attics in old houses are a whole different beast. I tried turning ours into a guest room once—thought it’d be cozy, but between the sloped ceilings and ancient wiring, it was more “hobbit hideout” than anything practical. Ended up moving the project to the garage instead. At least out there, you can stand up straight and don’t have to worry about stepping through 100-year-old plaster. Still had to deal with insulation, but honestly, I’ll take that over crawling around rafters any day.
Turning attics and garages into bedrooms: is it worth the hassle?
Totally get where you're coming from. Attics in older places can be a real mixed bag—those sloped ceilings look charming until you try to fit a bed under them, right? And the wiring... yeah, that's a whole other headache. I’ve run into knob-and-tube more times than I care to count.
But honestly, I think you made the smart call moving your project to the garage. Even though insulation can be a pain (especially if you’re dealing with concrete floors), at least you’re not risking a foot through the ceiling or having to duck every time you stand up. One trick I learned: laying down rigid foam insulation before framing can make a world of difference with those cold floors.
Still, there’s something about attic spaces that’s tempting—if only they weren’t such wild cards. Sometimes I wonder if all the charm is worth the work, but then again, when it works out, it’s pretty cool. Your “hobbit hideout” line made me laugh... been there myself.
Totally agree on the garage being less risky—at least you know what you’re dealing with structurally. Attics can be a money pit if you hit weird framing or ancient insulation. One thing I’d add: garages usually have easier access for running new HVAC, which is a huge plus. Attics always seem to need custom ductwork or mini-splits, and that gets pricey fast. Still, I get the attic appeal... just not sure it’s ever worth the surprise costs.
