الجواب وبالله التوفيق
Transactions (buying & selling) involving interest are considered haram(impermissible) regardless of the situation.
(قال تعالی احل اللہ البیع و حرم الربو (بقرہ
Since your job is to only show and advise people regarding the suitability of the property for them, it is permissible for you to be involved in this line of work. As the decision about buying the property through interest based (or non-interest based) loan is the client’s, then it is their own responsibility. You do not have a liability in this situation, especially when you advise them regarding buying their property through non-interest based loan.
واللہ اعلم بالصواب