But the customer does not get a payment certificate from me until they make payment.
So thats why people worry. they make a payment and do not get this certificate.
Still one should assume that if lawyers and notaries are involved this all is saver than 99% of other btc purchases.
I'd recommend you start another auction when you have some free hours to answer the inevitable questions and spend some thoughts on how to layout and formulate your offer to minimize them (details how the transaction works, offer to give details per PM etc) - considering the experiences you made with this thread which I'd consider as a test run, for it is no longer a valid auction thread imho.
So OP, please don't give up selling this house for bitcoin. its an awesome idea and it should happen.
Your idea is very good, I already asked the MODS to look in and maybe send this somewhere else so I can start again. But had no reply......