Re: Avergae price per sq meter in District X1.
eddie10, the average price per sqm in District XI is 347,000HUF/sqm according to but averages don't really give you a full picture in Budapest. (By the way, 'EUR' should read 'thousand forints' on this link.)
340,000HUF/sqm sounds about right but the most important specific considerations in relation to value (apart from the usual - location, etc.) are condition of building, lift in building, noise, light, aspect and condition of block.