"hermit crab insurance", with the shell in the logo being a stylized house.
"cuckoo nest insurance", can't be more provided than this.
I was looking at fortress insurance (and sure enough it already exist) in the sense of being fine and cozy inside while under siege. So the second thing that come to my mind in the "creative" synonym would be "Martello Insurance" (as in the martello towers fortification).
Home transfer insurance. Pops to Pups insurance. Everlasting shelter insurance. Ownership for life insurance.
What about an alusion to superman with "fortress of certitude insurance"
Fortress heritage insurance
Various suggestions I see have already been offered so let me give some suggestions for a possible name for your insurance company.
1. "Secure Insurance". Takes the ideas you have stated about the goals of staying at home and providing for family.
In thinking about these goals, other suggestions:
Piece of Mind Insurance
Estate House Insurance
Good luck with your new business.