Sustainable Mortgages: Benefits & Energy Labels

How an energy-efficient home lets you borrow more, why 2026 trimmed the top labels, and the escrow, NHG uplift and subsidies that pay for making a home greener.

An energy label is not just a sticker on the listing — in the Netherlands it changes how much you can borrow, what interest you pay, and how much of a renovation the bank will finance. For a first-time buyer weighing a cheap-but-draughty house against a pricier efficient one, the rules below often close more of the gap than people expect.

Borrow more for an energy-efficient home

The Dutch lending norms (set each year by the Nibud) add a fixed amount to your maximum mortgage when the home has a high energy label. It reflects the lower energy bills, which leave more room for the mortgage payment. The bonus is a flat amount by label — it is not separately income-tested — and it sits on top of your income-based maximum.

Two of these were cut for 2026: A+++ dropped by €5,000 and A++++ by €10,000, and the top €40,000 now requires a performance guarantee proving the home really performs as promised. The reason is that the salderingsregeling (net metering for solar) ends in 2027, so the bill saving from an ultra-efficient home is smaller than it used to be. There is no "A+++++" label — the Dutch scale stops at A++++.

The maximum-mortgage calculator has this bonus built in, so you can see what a better label is worth on your own income.

An energy-saving budget for a home that needs work

The label bonus above rewards buying an already efficient home. A separate mechanism — the energiebespaarbudget — lets you borrow extra to make the home you are buying greener: insulation, HR++ glass, a heat pump, solar panels. This is where a cheaper E/F/G house can catch up.

Without an extra income test you can add a base of roughly €9,000 at any income. With a test income of at least €33,000 the ceiling rises — up to about €20,000 for a home currently labelled E, F or G, and less for homes that are already reasonably efficient. A full nul-op-de-meter (energy-neutral) renovation with a builder's guarantee can reach €50,000.

The 106% exception

Since 2018 a Dutch mortgage is capped at 100% of the home's value — you cannot borrow more than the house is worth. Energy measures are the one deliberate exception: you may borrow up to 106% of the value, provided the extra 6% is spent entirely on making the home more sustainable. It is the only way to finance improvements without dipping into your own savings.

NHG's higher limit for green measures

The National Mortgage Guarantee (NHG) has a cost limit of €470,000 in 2026. When you co-finance energy-saving measures that limit rises by 6% to €498,200 — but the amount above €470,000 has to be spent entirely on those measures. It keeps NHG's lower rate and safety net available to buyers of homes that need work.

The renovation escrow (bouwdepot / verbouwingsdepot)

Money borrowed for improvements is not handed over in a lump sum. It sits in a renovation escrow (bouwdepot for new-build, verbouwingsdepot for an existing home) and you draw against it by submitting invoices as the work is done. The account typically runs 6 to 24 months. A useful detail: you pay mortgage interest on the whole loan, but you receive an interest credit on the balance still sitting in the depot, so the cost of the undrawn part is largely offset while you renovate.

A rate discount for a green home

Many lenders also offer a small duurzaamheidskorting — a sustainability discount of roughly 0.1% to 0.2% on the interest rate for a home at label A or better. It sounds trivial, but over a 10- or 20-year fixed period even 0.15% on a €350,000 mortgage adds up to real money.

Subsidies you can stack on top

Financing is only half the picture — several grants sit alongside the mortgage:

Work your numbers

Before you rule out a house on its label, run both scenarios in the maximum-mortgage calculator and read What is NHG? — the combination of a higher borrowing limit, the 106% exception and a rate discount often makes the efficient home, or the fixer-upper you plan to insulate, more affordable than the sticker price suggests.