Owners of village can build like on stronghold mode defenses,after accept on village map they will build like crafting items in strategus browser and need construction materials/site or goods.Constructions like this can be destroyed by hand weapon and repaired after battle if they didn't destroyed.
I remember old mod.
All start without fiefs,on fief place just empty camp.You own camp,start extract resources (wood,stone,iron etc),on this resources and gold construct buildings (town-hall,smithy,barracks,tower,walls etc),hire peasants for what you want.
P.S. btw maybe some1 know this mod i forget how it call.