Modular Home Foundations in Ireland: Ground Screws vs Concrete
The foundation options for a modular home in Ireland — ground screws vs concrete pads vs a full slab, costs, speed, and which suits your site.

Looking for the full picture? Read our complete guide to modular homes in Ireland.
Modular Home Foundations in Ireland
Every modular home needs a foundation — and the foundation you choose affects cost, speed, groundworks and even whether you can build on a sloping or poor-ground site. This guide explains the main foundation options for a modular home in Ireland and how to choose the right one.
Why the Foundation Matters
A modular home is only as stable as what it sits on. The foundation:
- Carries the weight of the home
- Resists wind and settlement
- Keeps the structure level over decades
- Determines how much groundworks you need
A poor foundation is the single most common cause of problems with any build — modular or traditional.
The Three Main Options
1. Ground screws
Steel screws driven into the ground, onto which the modular unit is mounted.
- Speed: installed in a day
- Cost: economical, minimal groundworks
- Best for: most gardens, sloping sites, poor access
- Pros: fast, minimal disruption, removable, reusable
- Cons: needs a proper ground survey; not suitable for every soil
2. Concrete pad / plinth foundation
Concrete pads poured at set points under the unit's load-bearing positions.
- Speed: 1–2 weeks (curing time)
- Cost: moderate
- Best for: stable ground, larger units
- Pros: proven, durable, well understood by lenders
- Cons: needs excavation and curing time; weather-dependent
3. Full concrete slab
A single reinforced concrete slab under the whole footprint.
- Speed: 2–3 weeks
- Cost: higher
- Best for: large modular homes, heavy units, sites needing a full ground floor
- Pros: very strong, ideal for larger homes, lender-friendly
- Cons: most groundworks, longest lead time
Which Foundation Suits Your Site?
| Site condition | Likely best foundation | |---|---| | Flat garden, good access, small pod | Ground screws | | Sloping garden | Ground screws (adjustable) | | Poor ground / soft soil | Ground screws or piled foundation | | Large modular home, stable ground | Concrete pad or slab | | Site with restricted access | Ground screws (no concrete trucks) | | Lender requires traditional foundation | Concrete pad or slab |
Foundations and Mortgages
Some lenders prefer a traditional concrete foundation. If you're financing with a mortgage, confirm with your lender whether ground screws are accepted — most mainstream lenders now accept engineered ground-screw systems with the right certification, but it's worth checking early.
Get the Right Foundation for Your Build
At New Chapter Homes, we survey your site and recommend the right foundation for your ground, your unit and your budget. Book a free site survey to confirm the best foundation for your project.
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