Oslo - Housing typology
There are four types of housing in the Oslo area:
Housing co-operatives (boligbyggelag or
  borettslag)
  In housing co-operatives, the members hold shares in the co-operative and
  this entitles them to buy property managed by the co-operative. When buying
  a house or apartment in the co-operative, you pay towards the joint mortgage
  of the co-operative as well as the general maintenance, insurance and common
  expenses. You may sell your share in the co-operative or sublet all or part
  of it to others.
For information on co-operative housing, you may contact the Norwegian Federation of Co-operative Housing Associations at:
- 
    Norsk Boligbyggelags Landsforbund
 Øvre Vollg. 11
 Oslo
 Norway
 Tel: + 47 (22) 40 3850
 website: www.gulesider.no
 You will find a complete list of boligbyggelag (or borettslag) in the yellow pages.
The following is a list of recommended boligbyggelag/borettslag in Oslo
- 
    LHL Boligselskapet
 Sandakerv. 99
 Oslo
 Norway
 Tel: + 47 (22) 79 9400
- 
    OBOS
 Hammersborg Torg 1
 Oslo
 Norway
 Tel: + 47 (22) 86 5500
- 
    Oslo Havebyselskap
 Damplass 21
 Oslo
 Norway
 Tel: + 47 (22) 69 5193
Housing co-operatives in Asker and Bærum
- 
    Asker og Bærum Boligbyggelag
 Bankv. 11
 Asker
 Norway
 Tel: + 47 (67) 57 4000
- 
    Gullhaug Boligsameie
 Gullberget 28
 Bærums Verk
 Norway
 Tel: + 47 (67) 80 0655
Shareholding flats (aksjeleiligheter)
  These are similar to co-operatives as the owners hold shares in a block of
  flats and are jointly responsible for the mortgage and the maintenance.
Bonded flats (obligasjonsleiligheter)
  Tenants hold bonds in the property and the contracts vary. It is advisable
  to use a lawyer when signing a contract.
Privately owned dwellings
  (selveierboliger)
  These are houses or apartments/flats owned by the occupants
  (freehold).










