Firstly you should remember that stamp duty will not apply to the first €125k of the house you would buy and only at 7% for the remainder. Without knowing what part of Cork you live in or want to move to, a quick look on myhome.ie showed a number of bungalows available for €250k-€300k, meaning your overall stamp duty could be less then €10k. Remember as well that a new house may be exempt from stamp duty.
There are grants availble which may help you upgrade your home, I've attached some URLs from the Citizens advice bureau.
http://www.citizensinformation.ie/c...g_adaptation_grant_for_people_with_disability
http://www.citizensinformation.ie/c...-schemes/housing_aid_for_older_persons_scheme
http://www.citizensinformation.ie/c...grants-and-schemes/mobility_aids_grant_scheme
There are grants availble which may help you upgrade your home, I've attached some URLs from the Citizens advice bureau.
http://www.citizensinformation.ie/c...g_adaptation_grant_for_people_with_disability
http://www.citizensinformation.ie/c...-schemes/housing_aid_for_older_persons_scheme
http://www.citizensinformation.ie/c...grants-and-schemes/mobility_aids_grant_scheme