This is an old thread but in my experience it seems that Vientiane is the place that most people gravitate to as it is the hub of the country with most expat companies having their offices there.
Prices for real estate are outrageous in Vientiane.Can pay anywhere between $250,000 to $1 million. The cheaper places are further out from the city centre.
Our house (4 bedroom, 3 bathroom single storey) is only 7 minutes drive from the city centre in a quiet dead end street.
Paid $75,000 for it in 2011 and late last year the Chinese neighbor offered $200,000.
I have no knowledge about real estate procedures, taxes etc as I left that to my wife and she never asked me for any money to cover this.
Maybe someone can enlighten us as to what happens now when purchasing a house or apartment.