When it comes to transforming outdoor spaces, few options are as versatile and rewarding as a garden room. Whether used as a home office, personal gym, guest suite, or peaceful retreat, garden rooms have become one of the most popular ways to add usable space and value to a property.
Now, a proposed change to Ireland’s planning regulations could open even more possibilities. If approved, the new rule would allow homeowners to build larger standalone buildings — like garden rooms — without the need for full planning permission.
At CG Garden Rooms, we’re closely following this development and already preparing designs that align with the potential new guidelines.
Here’s what the proposed 40sqm rule could mean for your home.
As reported by RTÉ News, the Irish government has proposed updates to housing and planning laws. These updates aim to increase the allowable size for modular homes and standalone garden buildings up to 40 square metres, without requiring planning permission.
This would mark a significant increase from the previous limits and is part of a broader effort to help address Ireland’s housing challenges and promote more flexible living solutions.
If passed, this rule would give homeowners the ability to create larger, more functional garden buildings — like offices, studios, and guest suites — with far less red tape and cost.
For garden rooms, this change means much more freedom. Homeowners can now designs that take full advantage of this new flexibility — without the delays and expenses typically associated with planning approval.
How Big Is 40sqm — and Why Does It Matter?
To visualise it, 40sqm is about the size of a large studio or one-bedroom apartment. That’s more than enough space to build:
- A spacious garden office
- A self-contained guest suite
- A home gym with room for cardio and weights
- A multi-purpose space with storage and lounge zones
With thoughtful planning, you could design dual-use rooms that adapt throughout the day — like an office that becomes a playroom or a yoga space with built-in storage.
At CG Garden Rooms, we’re already helping clients plan out larger layouts that could align with this potential new limit — focusing on usability, insulation, and year-round comfort.
What Can Be Built Under the Proposed Rule?
If approved, the updated rules would likely still require that:
- The building is for private use only
- It is not located in front of the main house
- It stays within 4 metres in height
- It does not exceed 40sqm in total floor area
Even with increased freedom, it’s still essential to work with professionals who understand technical standards. Every design complies with insulation, access, and usability standards — even when formal planning permission may not be needed. We ensure every project is designed to comply with building regulations, delivering long-term safety, performance, and comfort — with or without planning approval.
Why This Could Be a Game-Changer for Homeowners
This rule change comes at the perfect moment. More people are working from home, house prices are rising, and flexible living has become a major priority.
A high-quality garden room is now one of the smartest and most cost-effective ways to:
- Expand usable living space
- Create calm, functional zones for work, family, or wellness
- Increase property value with minimal disruption
Rather than moving, many homeowners are opting to maximise their existing property — and a well-built garden room is one of the most impactful ways to do it.
Add in the Irish government’s focus on modular and sustainable construction, and it’s clear: this is the ideal time to act.
Design Possibilities with a 40sqm Limit
With up to 40sqm of space to work with, garden rooms no longer need to feel like compromises. Here’s what’s now possible:
- Multi-room layouts: Office plus lounge, or studio plus storage
- Integrated bathrooms: Add a WC or shower for full independence
- Premium finishes: Think insulation, cladding, smart lighting, even underfloor heating
- Garden gyms or yoga rooms
- Creative studios with natural light and storage
We tailor the design not just to the available space, but to their lifestyle, ensuring every square metre adds genuine value to your day-to-day life.
Things to Keep in Mind Before You Build
Even with the new rules, some key considerations still apply:
- Access: Ensure your garden allows for material delivery and equipment
- Ground conditions: The right foundations ensure long-term durability
- Utilities: Electricity, plumbing, and internet should be integrated early
- Orientation: Make the most of natural light and privacy
- Future flexibility: Design a room that can evolve with your lifestyle
At CG Garden Rooms, we walk you through every decision, making sure nothing gets missed and everything is built to last.
Bigger Spaces, Bigger Dreams
Homeowners have been limited by strict size restrictions for years. The new 40sqm rule could change that.
While the 40sqm rule is still under review, it’s already sparking interest among homeowners looking to expand in smarter, more affordable ways.
At CG Garden Rooms, we’re ready to help you plan ahead — so that if and when the new rule passes, your dream space can move forward without delay.
📞 Contact CG Garden Rooms today to start designing your garden room and get expert advice on how to prepare for the changes.