Verify that the price they request from you for the property is the "market
price".
If you have visited several properties before deciding, you will already have
this information and if you have not done, make it.
Consider that the initial sale price usually is superior between a 5% and a
10% to which finally the transaction is made. This price will be conditional,
between other things, by the antiquity of the house, its state of conservation
and the possible loads or debts.
With these elements, as much buyer as salesman will be able to negotiate the
price. It is always useful to ask to an appraisal society for the valuation
of the house.
If you are going to finance the purchase by means of a hypothecating loan, the
appraisal will have to be made for this concrete purpose. It turns out useful
to know the appraisal societies that have accredited the financial organization
where you are going to ask for the hypothecating loan, in order to avoid possible
duplicities in this cost.
In addition to the price of the house, you must count on the expenses of the
transaction and the hypothecating loan if necessary, that would be about 10%
of the price of the property.
Remember: Do your own market study asking prices and request
that they appraise the house for you. Do not forget to include
in the final price the expenses of the transaction.