Improving the energy efficiency of your home has become a major priority for many homeowners in Dublin. Rising energy costs, climate goals, and government support have made deep retrofits more popular than ever. In 2026, generous grants are available to help Dublin homeowners upgrade older properties and make them warmer, healthier, and cheaper to run.
What Is a Deep Retrofit?
A deep retrofit is a complete energy upgrade of a home. Unlike simple improvements such as adding attic insulation, a deep retrofit looks at the entire property and upgrades multiple areas at the same time.
A typical deep retrofit may include:
- Attic insulation
- Wall insulation
- Floor insulation
- New windows and doors
- Heat pump installation
- Solar panels
- Improved ventilation systems
- Airtightness improvements
- Heating controls
The goal is to significantly reduce energy consumption and improve the home’s Building Energy Rating (BER). Most deep retrofit projects aim to achieve a BER of B2 or better.
Deep Retrofit Grants Available in Dublin in 2026
The main support for deep retrofits comes through the Sustainable Energy Authority of Ireland (SEAI) One Stop Shop Scheme. This programme allows homeowners to access multiple grants through one managed project. A registered provider handles the assessment, contractors, paperwork, and grant applications.
Many homeowners can receive grant support worth more than €25,000 depending on the size of the property and the upgrades completed.
Who Can Apply?
To qualify for a deep retrofit grant in 2026, homeowners generally need to meet the following requirements:
- The property must be located in Ireland.
- The home must have been built and occupied before 2011.
- The property should usually have a BER of B3 or lower before the retrofit.
- The completed project must achieve a BER of B2 or better.
- The work must be completed through an SEAI-registered One Stop Shop provider.
Both owner-occupiers and landlords can apply under the scheme.
Grant Amounts for Common Upgrades
The exact grant value depends on the property type and the measures installed. Examples of 2026 grant supports include:
- Attic insulation: up to €2,000
- Cavity wall insulation: up to €1,800
- External wall insulation: up to €8,000
- Internal wall insulation: up to €4,500
- Heat pump systems: up to €6,500
- Solar PV systems: around €1,800
- Mechanical ventilation: up to €1,500
- Heating controls: up to €700
- Project management support through the One Stop Shop scheme.
A homeowner completing several upgrades together may receive a combined grant package worth tens of thousands of euro.
Changes to Deep Retrofit Grants in 2026
Several important changes have been introduced in 2026.
One of the biggest updates is the removal of the previous minimum energy improvement requirement for One Stop Shop projects that include a heat pump. This change allows more homes to qualify for grants.
In addition, standalone grants for windows and doors became available in 2026, giving homeowners more flexibility when planning upgrades.
Benefits of a Deep Retrofit
There are many advantages to carrying out a deep retrofit in Dublin.
Lower Energy Bills
A well-insulated home requires less energy for heating and hot water. This can lead to significant savings on electricity, gas, or oil bills.
Better Comfort
Many older Dublin homes suffer from drafts, cold rooms, and uneven temperatures. A deep retrofit helps create a more comfortable living environment throughout the year.
Higher Property Value
Homes with strong BER ratings are increasingly attractive to buyers. An upgraded property may command a higher market value.
Reduced Carbon Emissions
Deep retrofits help reduce greenhouse gas emissions and support Ireland’s climate targets.
Improved Indoor Air Quality
Modern ventilation systems can reduce moisture problems and improve overall air quality within the home.
The One Stop Shop Process
The deep retrofit journey is designed to be straightforward.
Step 1: Home Assessment
A registered provider assesses your home and identifies suitable improvements.
Step 2: Retrofit Plan
A detailed plan is prepared showing the recommended upgrades, estimated costs, and available grants.
Step 3: Grant Application
The One Stop Shop provider manages the grant application process on your behalf.
Step 4: Installation
Approved contractors complete the retrofit works.
Step 5: Final BER Assessment
After completion, a final BER assessment confirms that the required energy rating has been achieved.
Are Deep Retrofits Worth It?
For many Dublin homeowners, the answer is yes. Although the initial investment can be substantial, grants significantly reduce the overall cost. The long-term savings on energy bills, combined with improved comfort and increased property value, often make deep retrofits a worthwhile investment.
However, homeowners should always obtain several quotes and carefully compare costs. Some Irish homeowners have reported that independent contractors can sometimes offer lower prices than managed retrofit packages, while others value the convenience and project management provided by the One Stop Shop route.
Conclusion
Deep retrofit grants in Dublin are helping homeowners transform older properties into energy-efficient, comfortable, and environmentally friendly homes. With grant support often exceeding €25,000 and a simplified application process through the SEAI One Stop Shop Scheme, 2026 is an excellent time to consider a major home energy upgrade. Before starting, homeowners should assess their property’s needs, compare providers, and develop a clear retrofit plan. By taking advantage of available grants, Dublin residents can reduce energy costs, improve comfort, and increase the long-term value of their homes while contributing to a greener Ireland.
FAQs
1. How much can I receive through a deep retrofit grant in Dublin?
The amount you can receive depends on your home’s size, condition, and the upgrades completed. In many cases, homeowners can receive grant support worth more than €25,000 when multiple energy improvements are carried out through the SEAI One Stop Shop Scheme.
2. Do I need a BER assessment before applying for a deep retrofit grant?
Yes. A BER assessment is usually required to determine your home’s current energy performance. This assessment helps identify the upgrades needed to achieve the required energy efficiency standard after the retrofit.
3. Can landlords apply for deep retrofit grants in Ireland?
Yes. Both owner-occupiers and private landlords can apply for eligible deep retrofit grants, provided the property meets the scheme requirements and the work is completed by an approved provider.
4. How long does a deep retrofit project take?
The timeline varies depending on the size and complexity of the project. Most deep retrofits can take anywhere from several weeks to a few months, including the assessment, grant approval, installation work, and final BER certification.
5. Is a deep retrofit worth the investment?
For most homeowners, a deep retrofit is a worthwhile investment. It can significantly reduce energy bills, improve indoor comfort, increase property value, and lower carbon emissions. Government grants also help reduce the overall cost of the upgrades.