The NHG Mortgage Rate Trap: Why Landlords Are Locking Tenants Into Rentals They Won't Maintain

The 10-year fixed NHG mortgage rate just hit 4.11%—its highest point since December 2023. If you're an international renter in Amsterdam or Utrecht, you might think mortgage rates are someone else's problem. They're not. That number is directly responsible for the dripping faucet your landlord won't fix.

Here's why. Small-scale private landlords across the Netherlands bought or refinanced their rental properties with NHG-backed mortgages when rates were sitting around 1.5%. Now those same landlords are trapped. If they sell, they lose that favorable rate. If they refinance, they're looking at 3.6% to 4.1% on a new 10-year fix—assuming they can even qualify under today's stricter affordability rules.

So they stay. But staying doesn't mean maintaining.

The math is brutal. Gross rental yields average 6.28% nationwide, but in Amsterdam that drops to 5.35%. Rotterdam does better at 6.91%. Those numbers sound fine until you factor in what's actually eating the returns: capped rent increases, rising insurance, higher property taxes (WOZ), and energy costs that landlords can't pass on to tenants.

The government capped annual rent increases at 4.4% for the private sector and 6.1% for the mid-market in 2026. Meanwhile, maintenance obligations under Dutch law remain stringent, and the Huurcommissie gives tenants real recourse for disputes. But here's the uncomfortable truth: the Huurcommissie only works if the landlord cares about the outcome.

A landlord who can't sell without absorbing a loss, can't raise rents to cover improvements, and can't refinance at an affordable rate has zero financial incentive to keep tenants happy. What's the worst that happens? The tenant leaves? Great—another tenant arrives, pays the same capped rent, and the cycle continues.

We see this at House Hunter when renters ask us why a listing that looked perfect on Pararius has a bathroom that hasn't been updated since 2008. The answer is usually that the landlord bought the place in 2020 at 1.5%, and the economics of fixing it stopped making sense two rate hikes ago.

The Dutch government has been tightening the screws on private landlords from multiple angles. Stricter rent controls in the mid-market segment were designed to protect tenants. Instead, they've created a situation where landlords are legally required to maintain properties to a high standard but financially unable to do so.

Banks have also slashed the maximum interest-only mortgage component from 50% to 30% of property value. For older landlords who structured their financing around interest-only loans, this means refinancing isn't just expensive—it requires a fundamentally different repayment structure they may not be able to afford.

The NHG threshold is rising to €470,000 in 2026, and up to €498,200 for properties with energy-saving upgrades. That's meant to keep buyers eligible. But for landlords already locked in, it doesn't help. The energy efficiency incentives built into NHG are irrelevant when landlords can't recoup those investments through higher rents.

What's emerging is a split in the Dutch rental market that's going to get worse before it gets better. Institutional investors—pension funds and insurers—are returning, attracted by stabilized capital market rates and long-term rental income. But they're focused on new-build and energy-efficient projects, not the aging stock held by private landlords.

If you're renting a newly built apartment in Eindhoven or Groningen from an institutional landlord, you're probably fine. Maintenance gets done. Energy labels are decent. The business model works because the financing was set up in the current rate environment.

If you're renting a 1990s flat in Den Haag or Delft from a private landlord who bought in 2020, you're in a different situation entirely. That property is aging, the landlord's margins are shrinking, and there's no institutional capital coming in to upgrade it. The divide between high-quality institutionally owned rentals and neglected private rentals is widening fast.

The Huurcommissie remains your strongest tool if your landlord is genuinely neglecting mandatory maintenance. Filing a complaint can trigger an assessment and force action. But be strategic: document everything, keep records of every repair request, and know your rights under the Woningwet.

If you're hunting for a new rental, pay attention to the energy label. A property with a poor energy label owned by a private landlord is a red flag—not because the landlord is malicious, but because the economics of upgrading it don't work for them. You'll be the one paying higher energy bills while waiting for improvements that may never come.

The lock-in effect also reduces housing mobility. Older landlords can't sell and downsize, which means fewer family homes hit the market. That constrains supply across the board and keeps pressure on both the rental and purchase markets. So even if you're not directly affected by a negligent landlord, you're paying for this trap through higher rents and fewer options.