CRYPTIC 219 - it is the worst cryptic i have ever done

furniture pieces that are simple to make 4 -6 (flat packed??)
prospective councillors are able, and achieved control of seat 10
vale, mr campbell 4
building firms start checking on farm vehicles 11
join forces to get the lowdown ---o
it's a real pleasure to provide therapy 5
one hundred hurt by magic spell c-a--
left behind roman ruin as usual 6