Sable's bookstore is in the neighborhood of Sweeney's barbershop. They're not next door or anything, but within 3 blocks or so. It's kind of skeezy place full of dark little alleyways and shit. If you've been to Sable's place, you've probably heard of Sweeney, and vice-versa.
Judah's repair shop is going to be stuck also in that general area, probably a few doors down from Sable or something.
Why do you care?
Because Sable's place, The Sign of the Weasel, is a good place for acquiring obscure and rare reading material or staging OOMs or hiding out in. She's got it pretty well guarded and stocked with weird shit.
Judah's place will be worth noting because the little bugger can fix just about any electronic device you can name. But more than that, he can arrange to "improve" a number of things. Like weapons. He can, for example, make bullets *want* to hit their targets, make nails *want* to drive themselves deeper, etc.
Things like that will have to be done on special commission, as any golem that can't be battery-powered draws its power directly from its maker when it's activated, wherever it's activated. But hey, come hang out at Sable's place and meet a golem-maker who's there when not in his own shop and and give him a good reason why YOU should be the proud new owner of a car that will crash into a wall when driven by anyone but you, or a costume that strangles its wearer, or a moonlight-activated werepuppet with hidden mechanical knives that kills you in the night then burns itself, or a toaster that always makes toast exactly right...