Beleidsboek Huurverhoging na woningverbetering – Rent Tribunal Policy for Improvements 2026
The Beleidsboek Huurverhoging na woningverbetering is the official policy manual issued by the Huurcommissie (Rent Tribunal) in the Netherlands. This version, dated January 1, 2026, replaces the previous July 2025 edition and serves as the regulatory framework for assessing rent increases following home improvements. The document provides a structured methodology for the Huurcommissie to determine the reasonableness of proposed rent adjustments under Articles 7:255 and 7:255a of the Dutch Civil Code (Burgerlijk Wetboek). It functions as a binding set of guidelines for the tribunal, ensuring consistency in adjudicating disputes between landlords and tenants.
The scope of this policy book covers the distinction between woningverbetering (home improvement) and onderhoud (maintenance), the impact of the Wet betaalbare huur (Affordable Rent Act), and the specific calculation methods used to derive a reasonable rent increase. It categorizes rental agreements based on their start date—specifically those signed before or after July 1, 2024—and their sector classification: sociale sector, middensector, or vrije sector. The document details structural elements such as interest rate tables, depreciation periods (afschrijvingstermijnen) for various components like solar panels or heat pumps, and the interaction with the Woningwaarderingsstelsel (WWS) point system.
Professional users can reference this document for specific thresholds, including the three-month filing deadline after the completion of works and the minimum monthly rent increase threshold. It details the five-step calculation process, including the application of mortgage-based annuity models to determine investment recovery over the economic lifespan of the improvements.
Legal Framework and Sector Classification
The policy differentiates between contracts based on the Wet betaalbare huur, which came into effect on July 1, 2024. This legislation introduced new rent boundaries, including the socialehuurgrens and vrijesectorgrens.
- Contracts before July 1, 2024: Divided into the social sector (below the liberalization limit) and the free sector (above the limit).
- Contracts on or after July 1, 2024: Classified into the social sector, middle sector (middensector), and free sector.
- Non-self-contained housing: Automatically categorized within the social sector regardless of rent price or points.
Defining Home Improvement vs. Maintenance
The Huurcommissie defines woningverbetering as changes or additions that increase residential comfort (woongenot). This excludes the remediation of defects or standard maintenance, which are regular landlord obligations.
- Woningverbetering: Adding built-in appliances, installing HR++ glass, enlarging balconies, or adding solar panels.
- Onderhoud: Repairing foundations, replacing rotten window frames with identical ones, or removing asbestos.
- Samenloop: When maintenance and improvement occur simultaneously (e.g., replacing a roof and adding insulation), only the cost portion attributed to improvement may be passed on to the tenant.
Only costs for immovable (onroerend) additions are considered. Movable items such as laminate flooring, curtains, or loose appliances cannot be included in the basic rent increase calculation.
The Five-Step Calculation Method
To determine a reasonable rent increase, the tribunal follows a standardized five-step procedure:
- Step 1: Qualify which specific works count as improvements.
- Step 2: Calculate total improvement costs, including 21% VAT (or 9% for insulation labor). If invoices are missing, the ArchiCalc program is used for unit prices.
- Step 3: Subtract any received subsidies (e.g., Wmo for disabled access improvements).
- Step 4: Calculate a monthly mortgage-based annuity using specific interest rates.
- Step 5: Final assessment of reasonableness relative to the proposed increase.
For Step 4, the Huurcommissie uses the average interest rate of the Obvion Basis Hypotheek (10-year fixed, no NHG) from the year prior to the start of the works. For works starting in 2025, the applicable rate is 4.48%.
Interaction with the Woningwaarderingsstelsel (WWS)
For the social and middle sectors, the new rent (original rent plus increase) must not exceed the maximum rent limit allowed by the Woningwaarderingsstelsel.
- WWS Point Assessment: The tribunal conducts a quality check to determine the maximum reasonable rent based on the building's attributes after improvement.
- Maximum Cap: If the proposed increase pushes the rent above the WWS cap, the increase is restricted to that maximum limit.
- Disabled Access: Improvements for disabled tenants may qualify for extra quality points in the WWS calculation.
Procedural Requirements and Deadlines
Specific administrative rules govern the submission of requests to the tribunal.
- Filing Deadline: Requests must be submitted within three months after the improvements are completed (datum totstandkoming).
- Threshold: The proposed rent increase must be at least €3.00 per month; lower amounts will lead to an inadmissible (niet-ontvankelijk) claim.
- Effective Date: The rent increase starts on the first day of the month following completion, unless a later date is agreed upon.
- Complex Improvement: For projects involving 10 or more units, 70% tenant approval is typically required for renovation works.
Frequently Asked Questions
What is the deadline for a landlord to request a rent increase assessment?
The request must be submitted to the Huurcommissie within three months after the works are completed and delivered.
Can maintenance costs be included in the rent increase?
No, costs for regular or urgent maintenance, such as repairing a lift or replacing old pipes, cannot be passed on as a rent increase for home improvement.
What interest rate does the Huurcommissie use for 2025 calculations?
For improvement works starting in 2025, the tribunal uses an average interest rate of 4.48% based on the 2024 Obvion Basis Hypotheek data.
Is there a minimum amount for a rent increase request?
Yes, the proposed monthly rent increase must be at least €3.00 for the Huurcommissie to process the request.
Are solar panels considered a home improvement?
Yes, immovable solar panels are considered a home improvement provided they were not previously present, and they carry a depreciation period of 15 years.
How is the rent increase calculated for a new kitchen?
The increase is based on the costs that specifically enhance comfort, calculated by taking the total cost and subtracting what it would have cost to simply replace the old kitchen with a standard one.
What happens if the rent increase exceeds the WWS maximum?
In the social and middle sectors, the Huurcommissie will limit the rent increase so that the total rent does not exceed the legal maximum allowed by the Woningwaarderingsstelsel.
Does the tenant have to agree to the improvements beforehand?
Generally, parties must agree beforehand. If the works are already finished, the Huurcommissie assumes the tenant gave consent, though for complexes of 10+ dwellings, a 70% approval rule applies.
