Going Green for a Cheaper Mortgage – How Energy Efficiency Can Save You Money

Buying a home is one of the most significant financial decisions you will make. For many, it involves balancing the need for comfort and aesthetics with affordability. But did you know that energy efficiency could be a game-changer when it comes to your mortgage?

Green mortgages are no longer just a buzzword—they’re transforming how we approach home ownership. With higher energy ratings helping you qualify for lower mortgage rates, green homes are not only kind to the planet but also to your wallet.

Whether you’re a first-time buyer, a seasoned investor, or someone considering energy-efficient upgrades, this guide explores how green mortgages work, why they’re worth considering, and what steps you can take to reap their benefits.

What Are Green Mortgages?

Green mortgages are home loans that offer favourable interest rates to buyers of energy-efficient properties. These loans incentivise purchasers to invest in homes with high Building Energy Ratings (BER), typically ranging from B3 upwards.

The idea is simple—energy-efficient homes cost less to heat and power, reducing overall expenses for homeowners. Lenders utilise these savings as justification to offer reduced interest rates. For example, homes rated A3 or higher can qualify for some of the lowest rates on the Irish market.

Why Are Green Mortgages Popular in Ireland?

Since their introduction in 2019, green mortgages have grown in popularity. A 2024 report from the Central Bank of Ireland showed that about 40% of new mortgage originations were green mortgages. Here’s why they’re gaining traction among Irish buyers:

  • Financial Benefits: Significant savings can be achieved over the lifetime of your mortgage compared to non-green options.
  • Environmental Awareness: The growing emphasis on sustainability is encouraging buyers to prioritise energy-efficient homes.
  • Government Incentives: Schemes like the Croí Cónaithe grant support renovations to improve energy efficiency, bringing more properties into the ‘green’ category.

How Much Can You Save?

On a €300,000 mortgage over 30 years, the monthly repayment difference between a B3-rated property and a C-rated property is €190.21, thanks to lower interest rates on green mortgages. Over time, these savings can amount to thousands of euros.

However, the exact rate you qualify for depends on several factors, such as the lender, your loan-to-value (LTV) ratio, and the energy rating of the property.

How Green Mortgages Fit Into the Bigger Picture

Energy efficiency is not just a personal financial benefit—it also mitigates climate risk. By encouraging borrowers to invest in energy-saving homes, financial institutions reduce their exposure to fluctuating energy costs and climate-related risks.

Paul Lyons, an economist at the Central Bank, underscores this point, saying, “Green mortgage products benefit both borrowers and banks by motivating energy-efficient investments and reducing credit risks associated with energy inefficiency.”

Steps to Qualify for a Green Mortgage

Thinking of securing a green mortgage? Here’s how to prepare.

1. Understand BER Ratings

Your home must meet a minimum BER rating, usually B3 or higher, to qualify. If you’re purchasing a new home, these are typically A-rated thanks to stricter EU energy standards for new builds.

For existing homes, assess the current BER and understand what upgrades, such as insulation or installing solar panels, might help boost the rating.

2. Consider Grants and Incentives

If the property requires energy upgrades, look into schemes like the Croí Cónaithe grant, which offers up to €50,000 for renovations on homes built before 2007. These upgrades can help you reach the required BER rating for a green mortgage.

3. Compare Lender Offers

Not all banks approach green mortgages in the same way. For instance, AIB offers rates as low as 3% for A-rated homes, while lenders like PTSB provide attractive cashback incentives alongside reduced rates.

Please note, we are not financial advisors and do not endorse specific banks or advisors, as the right choice can vary significantly based on individual circumstances.

It’s essential to carefully compare your options to ensure you secure the best deal tailored to your needs.

4. Work with Experienced Professionals

Navigating the homebuying process is complicated enough without factoring in energy efficiency requirements. Working with seasoned property law solicitors—like those at HOMS Assist—can ease your stress. They’ll ensure your contracts are airtight and guide you through the technicalities, such as BER compliance and title checks.

The Long-Term Benefits of Going Green

Investing in an energy-efficient home and securing a green mortgage has advantages that extend far beyond savings on interest rates.

  • Lower Utility Bills: Efficient heating, insulation, and renewable energy solutions significantly reduce your monthly expenses.
  • Higher Property Value: Buyers consistently pay more for homes with higher energy ratings, making your home a better long-term investment.
  • Positive Environmental Impact: By reducing energy consumption, you’re contributing to a greener, more sustainable planet.

Where to Begin

If you’re thinking about buying your first home or upgrading to a greener property, taking the first step can feel overwhelming. Here’s how to get started.

  1. Assess Your Finances

Try out online mortgage calculators to estimate what you can afford, factoring in potential green mortgage savings.

  1. Research Your Options

Evaluate lenders, compare rates, and explore available grants. Not every lender has the same offerings—so keep an open mind.

  1. Seek Expert Guidance

Partnering with knowledgeable professionals—like property solicitors from HOMS Assist—can help you avoid pitfalls and make informed decisions.

Your Green Mortgage Journey Starts Here

Green mortgages offer a fantastic opportunity to save money while promoting sustainability. For first-time buyers especially, they open doors to building a long-term investment while reducing the cost of living.

At HOMS Assist, our experienced team is here to make your homebuying experience as seamless as possible.

Visit our website for expert tips or call us at 1800 207 207 to discuss how we can support you through the process.

Your greener, smarter future is only a few steps away!

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