Garden Units & Outbuilding Conversions for Modern Family Living

Outbuilding Conversion

Create high-quality extra living space on your property with a bespoke garden unit or outbuilding conversion. 

Ideal for changing family needs, multi-generational living, independent space for adult children or parents, and even rental income potential.

3rd Generation Family Business

35+ Years’ Hands-On Experience

Fully Insured

More Space, More Flexibility, and More Options at Home

Sometimes what a family needs is not a bigger house, but smarter use of the space around the house.

A garden unit or outbuilding conversion can give you valuable extra living space without changing your main home, making it easier to adapt to changing family needs while staying in the place you already know and love.

For some households, that extra space means independent accommodation for an older parent, commonly known as a Granny Flat. For others, it means room for an adult son or daughter who wants more privacy while still staying close to home.
It can also work beautifully as guest accommodation, a home office, a home gym, or extra relaxing space.

It may even create rental income potential, depending on the type of unit.
With planning and tax rules changing in Ireland for rear garden modular homes, this is becoming a very popular option for Irish homeowners.

Garden Unit

Benefits of Garden Units & Outbuilding Conversions

Create More Living Space Without Extending the Main House

A garden unit or converted outbuilding can give you valuable extra room without the disruption of major changes to your main living space. It is a practical way to add flexibility while making better use of your property.

Support Changing Family Needs

Family life changes over time. What works now may not work in a few years. These spaces can provide more independence for older children, comfortable accommodation for grandparents, or a separate place for guests to stay.

Ideal for Multi-Generational Living

More families are looking for ways to live close together while still keeping a sense of privacy and independence. A self-contained garden unit can offer the best of both worlds.

Make Better Use of Existing Buildings

If you already have a garage, shed, or other outbuilding with good potential, converting it can be a smart and cost-effective way to create something genuinely useful.

Rental Income Potential

A garden unit or converted outbuildings can offer rental income potential. Short-term letting and residential use can be subject to different rules, so it is important to check what applies in your case.

A Future-Proof Investment

These spaces can adapt as your needs change. What starts as family accommodation could later become a guest suite, home office, hobby space, or another useful part of the property.

Types of Garden Units & Conversion Projects

Garden Unit

Independent Family Living Units

Ideal for multi-generational living, these spaces give parents, grandparents, or adult children more privacy and independence while still keeping family close by.

Outbuilding Conversions

Outbuilding Conversions

Existing garages, sheds, and other external buildings can often be transformed into warm, practical spaces with a completely new purpose.

Garden Unit

Multi-Use Garden Rooms

A garden room is a separate, purpose-built space in your garden that gives you extra room away from the main house. It can work beautifully as a home office, fitness room, creative studio, hobby space, or somewhere to enjoy a bit of peace and privacy.

Garden Unit

Rental-Ready Accommodation

A rental ready unit is a great way to generate extra income. These self-contained living spaces give you flexible options for long term or short term letting, while increasing the value of your property.

Why Choose Corcrin Construction

When you are creating extra accommodation on your property, you want a team that understands both the practical side and the personal side of the project. These spaces are often about family, independence, future planning, and making the most of what you already have.

Why homeowners choose Corcrin Construction for garden units and outbuilding conversions:

  • Trusted for high-quality building work that is made to last
  • A 3rd generation family business with over 100 years of building heritage
  • 35+ years’ hands-on building experience
  • Skilled at creating practical, comfortable spaces that feel like a natural part of the property
  • Highest quality workmanship and materials
  • Highest quality workmanship and materials
  • Strong attention to detail from structure to final finish
  • Honest advice and clear communication throughout
  • Fully insured for your peace of mind
  • Reliable service from a team that does what they say they will do

A lot of our work comes from repeat business and referrals from happy clients to friends and family. That says a lot about the trust we build and the standard we deliver on every project.

Garden Units & Outbuilding Conversions Frequently Asked Questions

What is a garden unit?

A garden unit is a separate structure built within the grounds of your home that can be used for additional living space, family accommodation, guest use, home working, or other flexible purposes.

Are garden units the same as granny flats?

They are often used in a similar way and are commonly known as Granny Flats, especially when they are designed as self-contained living spaces for family members.

Can I use a garden unit for a parent or adult child?

Yes, that is one of the most common reasons homeowners create them. They can work very well for multi-generational living by offering more privacy and independence while keeping family close by.

Can an existing outbuilding be converted into living space?

In many cases, yes. That depends on the condition, size, structure, and suitability of the building, but garages, sheds and other outbuildings can often be converted into very useful accommodation or living space.

Do I need planning permission for a garden unit or granny flat in Ireland?

It depends on the type of structure, size, intended use, and the current planning rules. Currently in 2026, the Irish government is proposing planning and tax exemptions for rear garden modular-style homes up to 45 sq m.

Can I rent out a garden unit?

Potentially, yes, but that depends on how the unit is designed and the intended type of rental use. It is important to get advice on your specific situation before treating it as a rental property. Short-term lets can also be subject to separate rules. (Citizens Information)

Ready To Get More Space And Unlock the Potential In Your Property?

Talk to Corcrin Construction about your house extension plans and take the next step with honest advice and a free, no-obligation quote.