No Short-Term Letting: What You Can and Can't Do With a Garden Dwelling Under the New Rules

The Short-Term Letting Ban

One of the clearest conditions in the new exempted development regulations is this: a garden dwelling built under the exemption cannot be used for short-term letting.

This means no Airbnb, no Booking.com, no holiday rentals. The government was explicit about this — driven in part by concerns from opposition parties about a potential "shadow rental market" of unregulated "shed-sits."

Labour Party warnings about the risk of substandard rental accommodation being created without tenant protections were taken seriously, and the short-term letting prohibition is the result.

What About Long-Term Rental?

This is where it gets interesting. The regulations state that the garden dwelling must "remain connected to the principal house and will not be sold separately." But they do not explicitly prohibit long-term residential rental.

In fact, the government has indicated that the Rent-a-Room relief scheme may be extended to cover auxiliary dwellings. The Tánaiste and Minister for Finance confirmed they will "consider the tax arrangements for auxiliary dwellings and how it interacts with the Rent-a-Room tax relief as part of the normal Budgetary process."

Under the existing Rent-a-Room scheme, homeowners can earn up to €14,000 per year tax-free from renting a room in their principal residence. If extended to garden dwellings, this could make a modular home in the back garden a genuinely viable income source.

What You Can Use the Dwelling For

Under the exemption, a garden dwelling is intended for:

• A dependent relative — elderly parents, adult children returning home
• A family member needing independent but proximate living space
• Long-term residential rental (potentially under Rent-a-Room relief, subject to confirmation in the Finance Bill)
• A home office or studio (though the 30sqm garden structure exemption may be more appropriate for this)

What You Cannot Do

• Short-term let (Airbnb, holiday rentals)
• Sell the dwelling separately from the principal house
• Subdivide the principal house AND build a garden dwelling (you can do one or the other, not both)
• Use it as a separate self-contained dwelling sold or let independently of the main house

The Political Debate

The new rules have not been without controversy. Social Democrats leader Holly Cairns warned the government it risks throwing renters "to the wolves," while Labour raised concerns about a rush of unregulated substandard rental units.

The government's response — the short-term letting ban and the owner-occupier requirement — is an attempt to balance the need for new housing supply with tenant protections.

How New Chapter Homes Approaches This

We advise all our clients to use garden dwellings as they were intended: to provide living space for family members or long-term tenants under proper rental arrangements. We do not support or facilitate short-term letting of our modular homes, and we design every unit to comply with the exemption conditions.

Note: The exemption rules described here are in force from 27 July 2026 under S.I. No. 340 of 2026. Always verify the current position with your local planning authority before proceeding, as conditions apply and individual circumstances vary. See our Planning Permission Ireland: The Complete 2026 Guide for the latest information.

Contact us to discuss your specific use case.