SEAI One-Stop-Shops: Complete Home Energy Upgrade
An SEAI one-stop-shop is a registered company that manages your entire home energy upgrade from start to finish. Instead of hiring separate contractors for insulation, heat pumps, solar panels, and windows, a one-stop-shop handles everything — including the SEAI grant paperwork.
One-stop-shops can access higher grant rates than individual grants, making deep retrofits more affordable. Total grants through a one-stop-shop can reach €25,000–€30,000+ for a comprehensive upgrade.
Last updated March 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Quick Answer
An SEAI one-stop-shop manages your entire home energy upgrade — insulation, heat pump, solar, windows, and grant paperwork — through a single contractor. One-stop-shops access higher grant rates than individual grants, with total support reaching €25,000–€30,000+ for a comprehensive retrofit.
Find One-Stop-Shop Providers Near You
Browse SEAI-registered one-stop-shop providers by county. Compare reviews, check ratings, and request quotes.
What does an SEAI one-stop-shop do?
A one-stop-shop provides a complete end-to-end home energy upgrade service:
Home assessment
Full energy assessment including BER, heat loss calculation, and upgrade roadmap.
Design and planning
Detailed plan for insulation, heating, solar, and ventilation upgrades.
Grant management
Handle all SEAI grant applications and paperwork on your behalf.
Contractor coordination
Manage all tradespeople (insulation, plumbing, electrical, roofing).
Quality assurance
SEAI-audited quality standards, post-installation inspections.
Post-upgrade BER
New BER assessment to confirm the improvement achieved.
The key difference: a one-stop-shop takes responsibility for the whole project. You deal with one company instead of 4–6 separate contractors. They guarantee the result — typically a minimum 2-grade BER improvement.
How does the one-stop-shop process work?
- Contact a registered one-stop-shop for a home assessment (free or low cost)
- The one-stop-shop surveys your home and creates an upgrade plan
- You receive a detailed quote showing costs, grants, and expected BER improvement
- You agree to the plan and sign a contract
- The one-stop-shop applies for SEAI grants on your behalf
- Works are scheduled and carried out (typically 2–6 weeks depending on scope)
- Post-installation inspection and BER assessment
- SEAI grant is paid directly to the one-stop-shop (you pay only the net cost)
Important: With a one-stop-shop, the SEAI grant is usually paid directly to the company, so you only pay the difference. This reduces your upfront cost significantly.
One-stop-shop grant rates
One-stop-shops can access enhanced grant rates compared to individual SEAI grants:
| Upgrade | Individual Grant | One-Stop-Shop Grant | Difference |
|---|---|---|---|
| Attic insulation | €1,500 | €1,500 | Same |
| Cavity wall insulation | €700 | €700 | Same |
| External wall insulation (detached) | €6,000 | €8,000 | +€2,000 |
| External wall insulation (semi-d) | €3,500 | €6,000 | +€2,500 |
| Internal wall insulation (detached) | €4,500 | €6,000 | +€1,500 |
| Internal wall insulation (semi-d) | €1,500 | €3,500 | +€2,000 |
| Heat pump system | Up to €6,500 | Up to €12,500 | +€6,000 |
| Solar PV | Up to €1,800 | Up to €2,400 | +€600 |
| Windows/doors | €1,500 | €4,000 | +€2,500 |
| MVHR | €1,500 | €1,500 | Same |
Total grants through a one-stop-shop can reach €25,000–€30,000+ for a deep retrofit, compared to €15,000–€20,000 through individual grants. The enhanced rates are designed to encourage comprehensive whole-house upgrades. SEAI requires a minimum BER improvement (typically to B2 or better) to access the enhanced rates. See our BER upgrades guide.
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Get a Quote ↓Benefits of using a one-stop-shop
Benefits
- Single point of contact for the entire project
- Higher SEAI grant rates (up to 50% more on some measures)
- Professional project management
- SEAI quality assurance and auditing
- Guaranteed BER improvement
- Reduced hassle — no coordinating multiple contractors
- Grant paperwork handled for you
- Often better pricing through bulk purchasing
Considerations
- Less control over individual contractors
- May cost slightly more than DIY-coordinated upgrades
- Availability varies by region
- Must commit to a comprehensive upgrade (not single measures)
- Waiting times can be 3–6 months in busy periods
How to choose a one-stop-shop
Check SEAI registration
Only use companies on the official SEAI registered list.
Get multiple quotes
Compare at least 3 one-stop-shops for your project.
Check references
Ask for examples of completed projects in your area.
Understand the scope
Make sure the quote covers everything including making good.
Payment terms
Confirm the grant is deducted upfront (you shouldn't pay it and wait).
Timeline
Get a clear project timeline with milestones.
Find SEAI registered one-stop-shops
Visit the official SEAI list: seai.ie/grants/home-energy-grants/one-stop-shop/registered-one-stop-shops
Registered one-stop-shops in Ireland
There are approximately 28 SEAI-registered one-stop-shops. Here are some of the main providers:
| Provider | Areas Served |
|---|---|
| Electric Ireland Superhomes | Nationwide |
| SSE Airtricity Energy Services | Nationwide |
| KORE Retrofit | Nationwide (based in Cavan) |
| Ashgrove Renewables | Nationwide |
| Energlaze Home Energy Upgrades | Nationwide |
| OHK Energy | Nationwide |
| Envirobead | Nationwide (excl. North West) |
| House 2 Home Retrofit | Nationwide |
| Bayview Contracts | Nationwide |
| Energywise Ireland | Clare, Cork, Kerry, Limerick, Tipperary, Waterford |
| Greenwatt | Cavan, Dublin, Meath |
| Larkrock | Dublin |
This is not an exhaustive list. The full searchable list is available on the SEAI website. Always verify SEAI registration before engaging a provider.
Typical one-stop-shop retrofit costs
A whole-house retrofit is a significant investment, but enhanced grants make it considerably more affordable. Here are typical costs by property type:
| Property Type | Total Cost | SEAI Grants | Net Cost | Typical BER Improvement |
|---|---|---|---|---|
| Apartment | €48,000–€55,000 | €11,000–€18,000 | €35,000–€40,000 | D→A3 |
| Mid-terrace | €50,000–€58,000 | €16,000–€22,000 | €34,000–€38,000 | D→A2 |
| Semi-detached | €55,000–€65,000 | €18,000–€27,000 | €35,000–€40,000 | D→A2 |
| Detached | €65,000–€75,000 | €22,000–€30,000 | €40,000–€48,000 | D→A2 |
Important: The one-stop-shop deducts the SEAI grant from your invoice upfront. You only pay the net cost. This is a major advantage over the individual grant route, where you pay the full amount and reclaim the grant from SEAI afterwards.
What's included in a typical retrofit?
A one-stop-shop retrofit is a comprehensive upgrade. A typical package includes:
Wall insulation
External or internal insulation to reduce heat loss through walls — the single biggest source of heat loss in Irish homes.
Attic insulation
Top-up or replacement of attic insulation to 300mm+ to meet current standards.
Heat pump
Air-to-water or ground-source heat pump replacing oil/gas boiler. SEAI grant up to €12,500 (bundle).
Windows & doors
Double or triple-glazed windows and insulated doors. Major impact on comfort and airtightness.
Ventilation (MVHR)
Mechanical ventilation with heat recovery. Essential in airtight homes to maintain air quality.
Solar PV
Solar panels to generate electricity and further improve the BER rating. Enhanced OSS grant up to €2,400.
One-stop-shop vs individual grants: which route?
| Feature | One-Stop-Shop | Individual Grants |
|---|---|---|
| Best for | Comprehensive upgrades (3+ measures) | Single measures (e.g. just attic insulation) |
| Grant rates | Higher on wall insulation, windows, solar | Standard SEAI rates |
| Total grants possible | Up to €30,000+ | Up to €20,000 |
| Grant payment | Deducted from invoice upfront | You pay full cost, reclaim later |
| Project management | Included (one point of contact) | You coordinate contractors |
| BER requirement | Must achieve B2 or better | No minimum BER required |
| Flexibility | Must commit to comprehensive package | Mix and match individual measures |
| Wait times | 3–6 months typical | Book contractors individually |
Our recommendation: If your home needs 3 or more upgrades (e.g. insulation + heat pump + windows), a one-stop-shop is usually the better route. You get higher grants, professional project management, and a guaranteed result. For a single measure like attic insulation or solar panels, individual grants are simpler. See our BER upgrades guide for which measures give the biggest improvement.
What's new for one-stop-shops in 2026
- Heat pump bundle increased to €12,500 (from €6,500) — effective 3 February 2026
- Windows and doors grants on individual route — previously only available through OSS, now also available individually from 2 March 2026
- 100 kWh/m² improvement waived if a heat pump is included in the OSS package — makes it easier for homes that are already partially upgraded
- Higher welfare recipient grants — qualifying households get increased rates
- First-time buyer bonus on attic insulation — effective 2 March 2026
One-Stop-Shop FAQ
What is an SEAI one-stop-shop?
An SEAI-registered company that manages your entire home energy upgrade. They handle assessment, design, contractor coordination, SEAI grant applications, and quality assurance. You deal with one company instead of multiple contractors.
Are one-stop-shop grants higher than individual grants?
Yes. One-stop-shops can access enhanced grant rates for certain measures (external wall insulation, windows, solar PV). Total grants can be €5,000–€10,000 higher than applying for individual grants separately.
How much does a one-stop-shop upgrade cost?
A typical whole-house retrofit through a one-stop-shop costs €30,000–€60,000 before grants, depending on the home's size and condition. After enhanced SEAI grants, the net cost is typically €15,000–€35,000.
How long does a one-stop-shop retrofit take?
From initial assessment to completion, expect 3–6 months. The actual construction work typically takes 2–6 weeks. Waiting times for availability can add another 2–3 months.
Do I need to move out during the upgrade?
Usually not. Most work can be done while you live in the house, though there will be disruption. External wall insulation and window replacement cause the most disturbance.
Can I choose which upgrades to include?
The one-stop-shop will recommend a package based on your home's needs. To access enhanced grant rates, a minimum BER improvement is required (typically to B2 or better). You can discuss priorities but individual measure cherry-picking defeats the purpose.
What if I only want solar panels or a heat pump?
For individual measures, you don't need a one-stop-shop. Apply for individual SEAI grants through an SEAI-registered contractor. A one-stop-shop is best for comprehensive upgrades involving 3+ measures. See our SEAI grants guide for individual grants.
Related Guides
BER Rating Guide
BER rating scale, cert costs, assessors, and how solar improves your BER.
Heat Pumps
Air source & ground source heat pumps: costs, SEAI grants up to €12,500.
Home Energy Grants Guide
All SEAI home energy grants: eligibility, amounts, and step-by-step application.
Solar Panel Costs
Full cost breakdown and payback periods.
Sources
Last updated: March 2026
John Rooney is the founder of Solar Info and has been covering the Irish solar energy market since 2023. He fact-checks all content against official SEAI data and maintains relationships with SEAI-registered installers across Ireland.
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