The basics
What is the WWSO?
The Woningwaarderingsstelsel Onzelfstandige woonruimte (WWSO) is the Dutch rent point system for shared housing — rooms where you share the kitchen and/or bathroom with other tenants. It is a separate system from the standard WWS, with its own calculation rules and maximum rent table.
The rules were significantly strengthened with the Wet betaalbare huur in July 2024. Unlike independent dwellings, shared rooms under the WWSO are always in the regulated sector — there is no point threshold above which a room becomes “free sector.” Your rent is legally capped regardless of the point score or what the contract says.
home
Zelfstandige woonruimte (WWS)
Your own front door, kitchen, and bathroom — exclusively yours. The standard WWS applies. This includes most apartments, studios, and houses.
Read the WWS guide →bed
Onzelfstandige woonruimte (WWSO)
You rent a room and share the kitchen and/or bathroom with others. The WWSO applies — a separate point system with different maximum rents. You're in the right place.
Key concept
The shared-space division rule
The fundamental difference between WWS and WWSO is how shared spaces are counted. In the WWSO, points for shared rooms — the kitchen, bathroom, common areas, energy label, and WOZ value — are calculated based on a division by the number of onzelfstandige woonruimten (independent lettable rooms) in the property, not simply the number of current occupants.
This means a well-equipped shared kitchen might earn 11 points in total, but divided by 4 lettable rooms, each person gets 2.75 points. Your private room area is the exception — it earns 1 point per m² just for you.
lightbulb What this means in practice
A typical student room of 15 m² in a 4-person house scores roughly 60–100 WWSO points. Per the January 2026 rent table, 100 WWSO points corresponds to a maximum rent of approximately €822/month. Many private landlords charge significantly more — often without realising the cap applies.
The point categories
How WWSO points are calculated
There are 13 rubrieken (categories) in the WWSO. The most impactful ones are listed below. Each contributes to your total score, which determines your maximum legal rent.
Source: Beleidsboek Woningwaardering Onzelfstandige Woonruimte — Huurcommissie (januari 2026) ↗
R1
Your own room earns 1 point per m². This is the single biggest factor for most rooms — measure the floor area of your private room only. To qualify, the room must have at least 2.10m ceiling height over at least 50% of the floor area, a window facing outside, and a floor area of at least 4m².
How it's measured: Measure at floor level. All built-in wardrobes (kasten) count toward the room area regardless of their size. Sloped ceilings below 1.5m height do not count toward floor area. En-suite shower cubicles and toilets inside the room are included.
Beleidsboek §2.1–2.2, p. 10
R2
Shared living rooms and common areas earn points that are divided equally among all lettable rooms. A shared living room earns 1 pt/m² ÷ number of woonruimten; shared storage or utility rooms earn 0.75 pt/m² ÷ number of woonruimten.
Note: Only rooms that all residents can access count. Landlord's private rooms or rooms exclusively used by specific tenants do not. Division is by the total number of onzelfstandige woonruimten in the property, not the number of current residents.
Beleidsboek §2.3, p. 10
R3
A heated private room earns 2 points regardless of the type of heating system — whether it is an individual CV boiler, district heating (stadsverwarming), or a heat pump. Heated shared rooms earn the same 2 points per room, divided by the number of woonruimten.
Tip: Check your meter cupboard or contract to confirm whether your room has its own heating. An unheated room earns 0 heating points.
Beleidsboek §3, p. 16
R4
The energy label of the whole building earns a fixed number of points per m² of floor area (vertrekken only), which is then attributed to your room proportionally based on your private room area. A better energy label earns more points per m²: for example, label A earns 1.25 pts/m² while label G earns 0 pts/m². The total energy label contribution is divided by the number of woonruimten in the property.
Check yours: Look up the building's energy label at
ep-online.nl using the property address. If no valid registered label exists, the construction year is used as a fallback.
Beleidsboek §4, p. 18
R5
The shared kitchen scores points using rules similar to the WWS — based on worktop length and appliances provided by the landlord (induction hob, oven, dishwasher, extractor hood, fridge, etc.). The total kitchen score is divided by the number of woonruimten.
Important: Only count appliances and fixtures that the landlord provided. Items you or other tenants brought yourselves do not count.
Beleidsboek §5, p. 22
R6
The shared bathroom and toilet score points based on fixtures (shower, bath, toilet, washbasin, towel radiator, etc.) using the same rules as the WWS. The total score is divided by the number of woonruimten.
Important: Only landlord-provided fixtures count. Bidets are not a recognised WWSO fixture and earn 0 points.
Beleidsboek §6, p. 26
R9
Parking facilities provided by the landlord can add points, divided equally among the woonruimten. An enclosed garage earns 9 points; a covered parking space earns 6 points; an open parking space earns 4 points — each divided by the number of woonruimten in the property.
Note: Only parking that the landlord provides as part of the rental counts. Public street parking does not.
Beleidsboek §9, p. 33
R11
The WWSO WOZ calculation is different from the WWS. The WOZ value per m² of the property is compared to the average WOZ/m² for the COROP region. Based on that ratio, your room receives a fixed number of additional points: 10 points if the WOZ/m² is at or below the regional average, 12 points if it is above the regional average, or 14 points if it is more than 1.5× the regional average. These points are not divided — each woonruimte receives the full score. There is no 33% proportional cap in the WWSO.
Find your WOZ: Look it up at
wozwaardeloket.nl. Divide the WOZ value by the total floor area (m²) of the property to get the WOZ/m², then compare to the COROP average published by the Huurcommissie.
Beleidsboek §11, p. 37
R12
Special landlord-provided amenities can add points, divided among the woonruimten: an EV charging point in shared parking, a shared bicycle storage room, a shared laundry room with landlord-provided machines, and similar facilities.
Note: Only facilities provided by the landlord and accessible to all residents count. Shared facilities must meet minimum quality criteria to qualify.
Beleidsboek §12, p. 39
Your rights
What can you do if your rent is too high?
If your rent exceeds the legal maximum for your WWSO score, you have the right to challenge it — shared rooms are always in the regulated sector regardless of points. The process is the same as for independent dwellings.
1
Calculate your WWSO score
Use our
WWSO calculator to get an estimate of your point total and the corresponding maximum legal rent. Takes about 2 minutes.
2
Write to your landlord
Send a written request (email is fine) asking them to lower the rent to the legal maximum. Many landlords comply at this stage — especially if you include your calculated point total.
3
File with the Huurcommissie
If your landlord refuses, file a formal request at
huurcommissie.nl. The €25 filing fee (toetsing aanvangshuurprijs) is refunded if you win completely. You must file within
6 months of the start date of your contract.
warning The 6-month deadline
You have 6 months from the start of your contract to challenge the initial rent at the Huurcommissie. After that window, you can no longer dispute the starting rent — only future rent increases. Don't wait.
public This applies to everyone
Dutch tenancy law applies regardless of nationality or residency status. International students and expats in shared housing have exactly the same rights as Dutch tenants. Your landlord cannot treat you differently because you are foreign.
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