One Stop Shop vs Individual SEAI Grants: How to Decide
Two Routes to the Same Destination
The SEAI offers two main grant routes for home energy upgrades: the Individual Grant route (previously called Better Energy Homes) and the One Stop Shop route (part of the National Home Energy Upgrade Scheme). Both fund insulation, heating, and other energy improvements. But they work very differently, and the right choice depends on what you’re planning to do.
This guide compares them head to head so you can pick the route that gives you the best value and the least hassle.
Side-by-Side Comparison
| Feature | Individual Grants | One Stop Shop |
|---|---|---|
| How it works | You pick individual measures, get a grant for each | A registered company manages the whole retrofit |
| BER target required? | No | Yes, must achieve BER B2 or better |
| Grant amounts | Fixed per measure (see below) | Typically higher per measure |
| You choose the contractor? | Yes | You choose the One Stop Shop company |
| Project management | You manage it | The company handles everything |
| Multiple trades needed? | You coordinate them | The company coordinates |
| Paperwork | You apply, submit evidence | The company handles SEAI paperwork |
| Best for | One or two specific upgrades | Whole-house retrofits |
| Home eligibility | Built before 2011 | Built before 2011 |
How the Individual Grant Route Works
This is the simpler route. You decide which measure you want (attic insulation, cavity wall fill, external insulation, etc.), apply to SEAI for that specific grant, get approval, hire an SEAI-registered contractor, complete the work, and draw down the grant.
The grant is typically deducted from your invoice. So if attic insulation costs €1,800 and the grant is €1,500, you pay the installer €300.
Individual Grant Amounts for Insulation
| Measure | Detached | Semi-d | Mid-terrace | Apartment |
|---|---|---|---|---|
| Attic insulation | €2,000 | €1,500 | €1,400 | €1,100 |
| Cavity wall | €1,800 | €1,300 | €850 | €700 |
| External wall | €8,000 | €6,000 | €3,500 | €3,000 |
| Internal dry lining | €4,500 | €3,500 | €2,000 | €1,500 |
Welfare recipients and first-time buyers get enhanced rates. For the full breakdown, see our SEAI insulation grants guide.
Pros of the Individual Route
- Flexible. You do one measure at a time, when it suits you and your budget
- No BER target. You don’t need to achieve a specific rating. Any improvement qualifies
- Choose your own contractor. You get quotes, compare, and pick who you want (must be SEAI-registered)
- Faster. Grant approval typically takes two to six weeks. No project management overhead
- Good for targeted upgrades. If all you need is cavity fill and an attic top-up, this is the straightforward option
Cons of the Individual Route
- Lower grants per measure in some cases (particularly for whole-house work)
- You manage it. Getting quotes, coordinating multiple contractors, and handling paperwork is on you
- No guarantees on outcomes. The grant is for the measure, not for achieving a specific energy rating
- Multiple separate applications if you’re doing several measures at different times
How the One Stop Shop Route Works
A One Stop Shop company is an SEAI-registered firm that manages your entire retrofit from start to finish. They assess your home, design a package of upgrades to achieve BER B2 or better, manage all the contractors and trades, handle the SEAI paperwork, and ensure the work is done to standard.
You choose the One Stop Shop company, they do the rest. You still pay for the work, but the grant is applied to your bill.
Pros of the One Stop Shop
- Higher grants for the same measures compared to individual grants
- Hassle-free. One company manages everything. One point of contact, one timeline
- Guaranteed outcome. The target is a specific BER (B2 or better), not just individual measures. If the work doesn’t achieve the target, it’s the company’s problem to fix
- Better overall result. Because the company designs the whole package, the measures work together. Insulation, heating, ventilation, and windows are coordinated
- Access to additional grants not available through the individual route (e.g., enhanced window and door grants when combined with wall insulation)
Cons of the One Stop Shop
- Must hit BER B2. If your home can’t realistically reach B2 (some very old homes), this route may not be available
- More expensive overall. One Stop Shop projects are bigger and more comprehensive. The grants are higher, but so is the total cost
- Less control. The company designs the package. You can input preferences, but you’re trusting them to make the right technical decisions
- Fewer companies to choose from. Not as many One Stop Shop operators as individual SEAI-registered contractors, particularly in rural areas
- Longer timeline. A whole-house retrofit takes weeks or months, not days
Which Route Gives Better Value?
It depends on the scope of work.
For one or two measures
The Individual Grant route is almost always better. If you just want cavity fill and an attic top-up, there’s no point engaging a One Stop Shop company. The individual grants cover those measures well, the work is quick, and you don’t need project management.
For three or more measures
This is where it gets interesting. If you’re planning wall insulation, a heating upgrade, and attic insulation, the One Stop Shop route typically offers higher total grant value. The project management fee adds to the cost, but the higher grants and coordinated approach often make up for it.
For a full retrofit
If you’re targeting a major energy upgrade (walls, heating, windows, ventilation), the One Stop Shop is usually the better route. The company handles the complexity, and the BER B2 target ensures you get a meaningful outcome rather than a collection of individual measures that may not add up to a cohesive result.
Decision Guide
| Your Situation | Best Route |
|---|---|
| Only need attic insulation | Individual |
| Only need cavity wall fill | Individual |
| Need wall insulation + heating upgrade | Consider One Stop Shop |
| Want to reach BER B2 or better | One Stop Shop |
| Tight budget, want to do work in stages | Individual |
| Want one company to manage everything | One Stop Shop |
| Live rurally with limited One Stop Shop options | Individual (more contractor choice) |
| Planning to sell and want maximum BER uplift | One Stop Shop |
Real Cost Scenarios
Scenario 1: Attic + cavity wall (Individual Route)
| Measure | Cost | Grant | You Pay |
|---|---|---|---|
| Attic insulation | €1,200 | €1,500 | €0 |
| Cavity wall fill | €1,800 | €1,300 | €500 |
| Total | €3,000 | €2,800 | €200 |
For simple measures like these, the individual route is clearly the way to go. The grants cover nearly everything.
Scenario 2: Full retrofit (One Stop Shop)
| Measure | Typical Cost |
|---|---|
| External wall insulation | €22,000 |
| Heat pump | €14,000 |
| Attic insulation | €1,500 |
| Ventilation (HRV) | €5,000 |
| Project management | €3,000 |
| Total | ~€45,500 |
| One Stop Shop grants | ~€22,000 |
| You pay | ~€23,500 |
The One Stop Shop grants are higher per measure than individual grants, and the project management ensures everything works together. For this level of work, the coordinated approach makes sense.
Can You Mix Both Routes?
Not on the same property at the same time. If you start with individual grants for some measures, you can later engage a One Stop Shop for additional work, but the previously granted measures won’t attract One Stop Shop rates retrospectively.
Some homeowners do take a phased approach: individual grants for attic and cavity fill now (cheap, quick, immediate benefit), then a One Stop Shop retrofit later for walls, heating, and windows. This can work well if you can’t afford the full retrofit yet.
Frequently Asked Questions
How do I find a One Stop Shop company?
The SEAI maintains a register of approved One Stop Shop operators on their website. Search by county to find companies operating in your area.
Do I need a BER assessment before choosing a route?
Not necessarily. But a BER assessment helps you understand your starting point and whether BER B2 is achievable, which determines whether the One Stop Shop route is viable. An insulation contractor can also give you a good idea based on a site visit.
Is the One Stop Shop more expensive because of project management fees?
The project management fee (typically €2,000 to €5,000) is an additional cost. But the higher grant amounts and the coordinated approach often offset this. You also avoid the hidden costs of managing multiple contractors yourself (time, follow-up, coordination problems).
Can landlords use the One Stop Shop?
Non-private landlords and approved housing bodies can access the One Stop Shop route with enhanced grant rates of roughly 75% to 80% of costs. Eligibility varies by landlord type, so check the SEAI website for current rules.
What if my home can’t reach BER B2?
If BER B2 isn’t achievable (common in very old homes), the One Stop Shop route won’t work. The individual grant route has no BER target, so you can still get grants for whatever improvements are possible. See our guide to insulating older homes for more on this.
How long does a One Stop Shop retrofit take?
Typically two to four months from start to finish, depending on the scope. This includes assessment, design, contractor scheduling, and the physical work. It’s a significant project, so expect some disruption.