One or a few upgrades
Apply for the relevant individual measures and use contractors registered for that work. Check eligibility and grant approval before starting. Payment arrangements depend on your route.
Individual energy grants ↗Home energy upgrade costs and grants in Ireland.
Price the work first. Check the grant route. Keep the two numbers separate.
What is a realistic starting budget?
Use the completed-project medians below as context, then get a written quote for your scope. A median is the middle of a sample; it is not a fixed package price, an estimate for your house or proof of the best available offer.
| Upgrade | Detached | Semi-D / end terrace | Mid terrace | Apartment |
|---|---|---|---|---|
| Solar PV | €11,100 | €9,500 | €9,250 | €9,075 |
| Heat pump | €17,000 | €16,741 | €16,000 | €9,025 |
| Attic insulation | €2,700 | €2,101 | €2,200 | €1,515 |
| Cavity wall insulation | €2,350 | €1,585 | €1,250 | €1,036 |
| Internal wall insulation | €8,600 | €9,843 | €9,804 | €5,736 |
| External wall insulation | €26,500 | €23,219 | €14,000 | €11,300 |
| Windows | €10,453 | €7,110 | €4,650 | €4,196 |
SEAI’s sample covers 23,412 individual upgrades. The apartment external-wall median is based on only five homes. Solar equipment and system size vary within the sample; do not treat this as a panels-only package.
Read SEAI’s full cost publication ↗Which grants should I check?
A coordinated full retrofit
A registered One Stop Shop manages the eligible project and grant process. Confirm the entity in your contract against the current register; a website’s “one stop shop” wording alone is not registration evidence.
Find a registered One Stop Shop ↗Current individual-grant pages take precedence over older grant columns in cost PDFs. Heat-pump components, enhanced support, previous grants and property conditions can change what you qualify for. Avoid adding headline maxima from different routes.
Sources checked 10 November 2026. Historical cost data covers January–June 2026. This is guidance, not a Homeology price, eligibility decision or installation guarantee.
Compare the same job, not just the final price.
- Gross works price, VAT treatment and what is excluded
- Exact grant amount and whether it is already deducted
- Equipment specification, design, labour and certification
- Roof, electrical, moisture, ventilation and making-good work
- Assessment/BER, scaffolding, access and groundworks
- Warranty, deposit, payment milestones and cancellation terms
Try the quote-minus-grant budget calculator. It does arithmetic only; it does not decide eligibility.
What about a full home retrofit?
SEAI’s January–June 2026 One Stop Shop sample covers 583 private homes. For semi-detached/end-terrace homes, median gross work was €62,881 and median household cost was €37,816. Each is a separate median; subtracting one median from another does not describe a particular home.
See the One Stop Shop cost data ↗