After a general die off, I would get a crew together and start scavenging the 'burbs. Everything from car part, buckets, gas cans, garbage bags, paper towels, canned goods, and tools and bits of every kith and kine, to the materials and lumber of the structures themselves. Unmaintained structures of modern building materials would soon degrade, rot, and dissolve. Dissassembled and stored under roof, they'd be useful for decades, and in a world without manufacturing, they'd be almost priceless in usable condition a few years down the road.

Thanks!