Lien for default on home owner insurance
We live in a two family condo. We have insurance on the interior and contents of our condo. There is a joint policy on the building envelope (roof, windows, structure, etc.). The other condo owner has managed the joint insurance and taxes etc for the condos. Because we had not seen an invoice for the joint home owner insurance we began asking for it. We were given reasons for not having an invoice (looking at new companies, needing to trim a tree, etc.). We finally called the insurance company and found out that the policy had not been paid since October of last year and was therefore not in effect. The insurance company explained that they had made repeated calls to the other owner on the lack of payment but had not received any return calls or payment. We have managed to convince the insurance company to renew the policy with the stipulation that it be paid in full (we can't blame them). We have asked the other owner for his share and he refuses to pay. Do we have a right to file a lien on his condo to hopefully recoup his half of the insurance? He has told us he is putting his condo on the market in the next month or so.
If so, what is that process?
Thanks for any help.