
If you’re sitting on unused office space, you’re not alone. Many businesses across Ireland are finding themselves with more square footage than they need especially with hybrid and remote work models on the rise. But what’s the best way to legally sublet that space without landing in legal hot water or breaching your lease?
That’s where smart planning and the right tools like the FindQo.ie Office Space Calculator can make a difference. Designed specifically for office planning in Ireland, this free AI-powered tool helps both lessors and subtenants estimate the right office footprint based on real needs, not guesswork.
In this guide, we’ll walk you through the legal steps of subletting office space in Ireland and show you how the office space calculator helps both sides make better, informed decisions.
Before you list your extra desks on the market, it’s essential to understand the legal framework for subletting commercial space in Ireland.
Most commercial leases include a “user clause” or “alienation clause” that outlines whether subletting is allowed. Some leases outright prohibit it, while others permit it with the landlord’s written consent.
You’ll need to:
Failing to follow this process could result in breach of contract which comes with serious risks.
If you’re unsure, consult a solicitor specialising in property law. They can help you draft a sublease agreement that protects your interests and aligns with Irish regulations.
Once the legal boxes are ticked, it’s time to determine how much space you should actually sublet. That’s not just a logistical issue it’s a financial one.
Too much, and your team could be cramped. Too little, and you’re missing out on potential income. That’s where the FindQo.ie Office Space Calculator becomes invaluable.
Rather than relying on assumptions, you can use the office space calculator to analyse:
This ensures you’re retaining the space you need while offering an accurate, functional layout to potential subtenants.
The tool is:
The calculator uses a two-fold approach to generate accurate office layout estimates, making it ideal for landlords, tenants, and subtenants alike.

Start by entering structured details such as:
These data points generate a square metre estimate for optimal space planning.
Next, it asks you scenario-based questions, such as:
This adaptive logic helps account for fluctuating team sizes, hybrid models, and temporary usage patterns ideal for companies subletting to short-term or seasonal partners.
Startups often lease more space than they initially need to allow for growth. But while you’re scaling, that extra space can be an expense rather than an asset.
This ensures you generate revenue from unused space without impacting your core business.
In a hybrid work environment, your office may only be used 50% of the time. Subletting becomes a smart move but it has to be calculated properly.
This kind of data can also make your offering more appealing to potential subtenants who may be looking for flexible, part-time arrangements.
Even remote-first companies tend to lease office space for meetings, client days, or creative sessions. But often, this space is idle more than it’s used.
It’s a win-win: they get professional space, and you recoup overheads without altering your working culture.
After identifying how much space to sublet, the next step is presenting it effectively. Here’s how to turn your insights into action.
Use the calculator’s output to detail:
Clear, accurate specs make listings more attractive and build trust with potential subtenants.
Subtenants especially in the Irish startup scene love flexibility. Use the calculator to propose:
With accurate planning, you’ll appear professional, organised, and ready to work collaboratively.
Whether you’re a business subletting extra space or a company looking for a small, flexible footprint, planning is everything. And that planning starts with understanding your true space requirements.
The FindQo.ie Office Space Calculator empowers you to:
No sign-ups. No fees. Just clear, AI-backed insights to support your decisions in real-time.
Subletting doesn’t have to be a legal maze or a logistical headache. With the right understanding of your lease, proper planning, and the office space calculator at your side, you can turn unused space into an opportunity.
Whether you’re trying to maximise ROI on a commercial lease, scale sustainably, or support the flexible future of work, start with data not guesswork.
Browse thousands of verified property listings on FindQo.ie