Attic Conversion Dublin

Why Choose OS Holding

• Fully insured for your peace of mind
• Member of the Construction Industry Register Ireland
• Member of the National Guild of Master Craftsmen
• Member of the Construction Industry Federation
• Free site survey and no-obligation quotation
• Dedicated project management from consultation through to completion
• 1-year workmanship guarantee

Make Better Use of the Space You Already Have

Many Dublin homeowners reach a point where they need more room but don’t want the cost, uncertainty and inconvenience of moving. Converting an existing attic allows you to expand your living space while making better use of your current property.

An attic conversion is often an ideal solution for:

• Growing families needing an additional bedroom
• Professionals working from home
• Homeowners creating a guest room with an en-suite
• Families looking for a playroom or teenage retreat
• Anyone wanting to improve the functionality of their home without extending its footprint

Not every attic is suitable for conversion. Factors such as roof structure, available head height and access all influence what is possible. During your free site survey, we’ll assess your attic and explain the most suitable options for your property before providing a detailed quotation.

Because every home is different, each attic conversion is individually designed to suit the existing structure, your lifestyle and your budget.

More Than Extra Space

A well-designed attic conversion doesn’t simply add another room—it changes how you live in your home.

Create Space for Your Family

Whether you need another bedroom for a growing family, a quiet home office or a dedicated guest suite, converting your attic gives you practical living space without sacrificing your garden or outdoor areas.

Add Long-Term Value to Your Home

An attic conversion can improve both the functionality and appeal of your property. By making previously unused roof space fully habitable, many homeowners also strengthen the long-term value of their investment.

Avoid the Cost of Moving

Buying a larger property often involves significant costs beyond the purchase price. An attic conversion allows many homeowners to remain in the neighbourhood they enjoy while gaining the additional space they need.

Designed Around Your Home

Every property is different. We tailor each conversion to suit the existing roof structure, available space and intended use, creating a room that feels like a natural extension of your home rather than an afterthought.

What’s Included in Our Attic Conversion Service

Every attic conversion begins with understanding your home’s existing structure and your plans for the new space. We manage the project from planning through construction, providing a single point of contact throughout the process.

Our attic conversion service can include:

• Free site survey and consultation
• Detailed written quotation
• Tailored attic conversion design
• Structural alterations where required
• Installation of stairs
• Roof windows or dormer construction, depending on the chosen conversion type
• Insulation and ventilation works
• Electrical installation
• Plumbing for en-suite bathrooms where required
• Interior finishes
• Compliance with applicable Irish building regulations
• Dedicated project management throughout the build

Every project is unique, so the final specification depends on factors such as the size of your attic, the roof design, structural requirements and the type of room you want to create.

What Does an Attic Conversion Cost?

The cost of an attic conversion depends on factors such as your roof structure, the type of conversion, the size of the space and the level of finish you choose. As a general guide, basic Velux attic conversions typically start from €25,000–€35,000, while dormer attic conversions in Dublin generally range from €35,000–€55,000+, depending on the complexity of the project.

Following a free site survey, we’ll provide a detailed, no-obligation quotation tailored to your home and renovation goals.

If you’re planning your project, you may also find these guides helpful:

• How Much Does a Dormer Attic Conversion Cost in Dublin? – Learn about current pricing, the factors that affect costs and budgeting tips.
• How to Convert an Attic into a Bedroom – Explore the conversion process, planning requirements and design considerations before you get started.

Why Choose OS Holding for Your Attic Conversion?

Choosing the right builder is about more than comparing quotes. You want a team that communicates clearly, manages the project professionally and delivers work that meets the agreed specification.

At OS Holding, we aim to make the entire process as straightforward as possible by providing one point of contact from your initial enquiry through to project completion.

A Dedicated Project Manager

Home renovation projects often involve multiple trades working together. Rather than coordinating different contractors yourself, you’ll have a dedicated project manager overseeing the build and keeping you informed throughout each stage.

Clear, Tailored Quotations

Every attic conversion is different. We take the time to assess your home before preparing a detailed written quotation that reflects the scope of your project, helping you understand exactly what is included.

Built Around Your Home

No two roof spaces are identical. Whether your property is suited to a Velux conversion, a dormer extension or a hip-to-gable design, we’ll recommend the most practical solution based on your home’s structure, available head height and how you plan to use the new room.

Fully Insured and Professionally Accredited

For added peace of mind, OS Holding is fully insured and is a member of the Construction Industry Register Ireland, the National Guild of Master Craftsmen and the Construction Industry Federation. These memberships reflect our commitment to professional standards and responsible construction practices.

A Complete Design-and-Build Service

From the first site survey through to the finishing touches, we manage every stage of your attic conversion. This approach helps streamline communication, reduces the need to coordinate multiple contractors and provides a more organised renovation experience.

Our Attic Conversion Process

We believe homeowners should know what to expect before work begins. Our process is designed to keep you informed from your first enquiry through to project completion.

1. Free Site Survey

We visit your property to assess your attic, discuss your goals and determine whether the space is suitable for conversion. We’ll answer any questions you have about layout options, planning considerations and the overall process.

2. Design and Detailed Quotation

Following the survey, we’ll prepare a tailored proposal outlining the recommended scope of work. Every quotation is based on your property’s requirements and the type of room you want to create.

3. Planning and Construction

Once you’re ready to proceed, our team coordinates the project from start to finish. This may include structural works, staircase installation, spray foam attic insulation, electrical, plumbing services and heating services, roof windows or dormer construction, and interior finishes where included within the agreed scope.

4. Final Completion

Before handing over the finished space, we carry out final checks to ensure the work has been completed in line with the agreed specification. You’ll then have a new living area that’s ready to become part of your everyday home.

Attic Conversion Types

The right conversion depends on your home’s roof structure, available head height and how you intend to use the new space. During your site survey, we’ll explain which option is most suitable for your property.

Velux Attic Conversions

A Velux conversion makes use of existing roof space by installing roof windows without significantly altering the roof structure. This option is often suitable where sufficient head height already exists and homeowners want to maximise natural light.

Dormer Attic Conversions

Dormer conversions extend outward from the existing roof, creating additional floor space and improved headroom. They’re a popular choice for homeowners planning an extra bedroom, home office or guest suite.

Hip-to-Gable Conversions

For suitable properties, a hip-to-gable conversion replaces the sloping side of the roof with a vertical wall, increasing the usable floor area. This option is often combined with a rear dormer to create even more living space.

Planning Permission and Building Regulations

Many homeowners ask whether planning permission is required before converting an attic.

The answer depends on the design of the conversion and the changes being made to your roof. Some projects may fall within exempted development, while others require planning permission.

Regardless of planning requirements, attic conversions intended for living accommodation must comply with the relevant Irish Building Regulations. These cover important considerations such as:

• Structural safety
• Fire protection
• Staircase design
• Insulation
• Ventilation
• Emergency escape requirements

We’ll explain how these requirements apply to your project during your consultation so you understand what’s involved before work begins.

Areas We Serve

OS Holding provides attic conversion services throughout Dublin and the surrounding areas.

We regularly work with homeowners across North Dublin, South Dublin, Lucan and nearby commuter towns, helping families create additional living space without moving home.

If you’re unsure whether we cover your location, please get in touch. We’ll be happy to confirm whether we can assist with your project.