Design, Cost & Planning

Attic Conversion Dublin — Add Space Without Extending Outward

An attic conversion is one of the most cost-effective ways to add a bedroom, home office, or additional living space to a Dublin home. BuildTech manages the full process — structural assessment, design, planning (where required), and construction — with your budget confirmed before any design work begins.

We do not progress any project without a clear, agreed budget
If your expectations do not align with your budget, we will tell you immediately
Structural suitability assessed at feasibility — no surprise structural costs mid-project
Serving Greater Dublin — CIRI registered, fully insured, 100+ projects delivered

Request a Consultation

All enquiries are reviewed by our team before a consultation is confirmed.

Our team will respond within 1 business day.

NO OBLIGATIONCIRI REGISTERED
CIRI Registered
Construction Industry Register Ireland
CIF Member
Construction Industry Federation
5★ Google Rated
Verified by Dublin homeowners
100+ Projects Delivered
Across Greater Dublin Region
Structural Assessment First

Is Your Attic Suitable for Conversion? We'll Tell You Clearly.

Not all attic spaces are suitable for conversion. The existing roof structure, head height, floor joist capacity, and access requirements all determine whether a conversion is viable — and what it will cost.

BuildTech carries out a full feasibility and structural assessment before any design work begins. We confirm whether your attic is suitable, whether planning permission is required, and exactly what the project will cost — before you commit to any design fees.

Structural suitability — roof type, head height, and floor joist capacity all assessed
Planning status confirmed — Velux-type conversions are often planning exempt
Full cost plan before you commit to any design or construction fees
Request a Consultation →
Attic conversion Dublin — structural assessment and design
Structural assessment first Suitability confirmed before design
Client Reviews

What Our Clients Say

Rated 5★ across Google, Houzz, and OnlineTradesmen by Dublin homeowners.

GB
Graham Barry
Google

"Professional, reliable service with clear communication and integrity."

"BuildTech expertly handled my Dublin house renovation, offering professional, reliable service with clear communication, integrity, and cost-effective solutions, saving me time and stress. From the very first consultation I knew I was dealing with a team that genuinely cared about getting the job done right."

KW
Kirsten Wendenburg
Google

"Excellent communication and budget-friendly suggestions throughout."

"BuildTech fully renovated our house, offering excellent communication, budget-friendly suggestions, and efficient problem-solving. We are thrilled with the result, which exceeded our expectations. The team was professional at every stage and the final finish was outstanding."

OA
Olga Antipenko
Google

"Excellent communication and support throughout. Highly recommend."

"BuildTech helped with my rear extension, providing excellent communication and support throughout. The project was delivered on time and exactly as quoted. The team was respectful of our home and kept disruption to a minimum. Highly recommend to any Dublin homeowner."

JH
John Hagan
Google

"Handled my renovation with professionalism and care. Very pleased."

"BuildTech handled my renovation, including plumbing and plastering, with professionalism and care. Very pleased with the results. The team was courteous, tidy, and kept me informed at every stage."

JH
Jason Hollifield
Google

"Expertly guided my house renovation, delivering exactly what I wanted."

"BuildTech expertly guided my house renovation, delivering exactly what I wanted. The process was smooth from start to finish and the quality of the work speaks for itself."

SM
Salena McCarthy
Google

"Made building my home easy and successful."

"BuildTech made building my home easy and successful. The team was knowledgeable, responsive, and delivered on every promise. Thanks, BuildTech!"

JB
Judy Braodnax
Google

"My kitchen looks amazing after the renovation — great work from BuildTech!"

"My kitchen looks amazing after the renovation — great work from BuildTech! The team transformed the space completely and the quality of the finish is exceptional."

VV
Victoria Vetter
Google

"Kitchen and bathroom renovation — beautiful, eye-catching result."

"Thanks to BuildTech for my kitchen and bathroom renovation, giving my home a beautiful, eye-catching look. The team were professional throughout and the result exceeded what I had hoped for."

FP
Fabio Pulvirenti
Google

"The team was very kind to answer all my questions throughout."

"So far so good. The team was very kind to answer all my questions throughout the process and I felt informed and comfortable at every stage."

AH
Anne-Marie Hickey
Google

"Expertly managed my cottage renovation remotely — great communication and quality results."

"BuildTech expertly managed my cottage renovation remotely — great communication, quality results, and a helpful team. Highly recommended! The remote management process was seamless and the results were excellent."

KC
Kristen and Colm
Google

"Transformed our home with excellent management and clear communication."

"BuildTech transformed our home, providing excellent management and clear, responsive communication throughout the entire project. We are delighted with the result and would not hesitate to recommend them."

J
Justin
OT OnlineTradesmen

"Professional, courteous, punctual — stayed late, finished early. Excellent work."

"Ronan's team revamped a room, gutting, rewiring, insulating, plastering. Professional, courteous, punctual, stayed late, finished early, excellent work, very pleased. Would not hesitate to use BuildTech again."

D
Dylan
h Houzz

"Professional, courteous, punctual — finished early. Excellent work."

"Ronan's team revamped a room, gutting, rewiring, insulating, plastering. Professional, courteous, punctual, stayed late, finished early, excellent work, very pleased. A pleasure to deal with from start to finish."

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Matt
h Houzz

"The client portal gives full project transparency — drawings, costs, updates and team comms."

"Buildtech's client portal gives full project access, drawings, costs, updates & team comms, ensuring full transparency. This level of visibility into the project is something I had never experienced with a contractor before — outstanding."

K
Kirsten
h Houzz

"Superbly renovated our home — great team, clear communication, outstanding results."

"BuildTech renovated our home superbly — great team, clear communication, smart advice, and outstanding results! Every aspect of the project was handled professionally and the quality of the finish is exceptional."

Attic conversion under construction — BuildTech Dublin
Documentation prepared in-house No third-party delays
Design & Build

From Structural Drawings to Finished, Certified Living Space

BuildTech manages the full attic conversion in-house — structural design, planning application where required, construction, insulation, and sign-off. Our in-house team eliminates the delays that occur when structural engineers, architects, and builders are separate companies.

Every attic conversion is managed with a clear, agreed cost, managed by a dedicated project manager, and certified by an independent chartered engineer on completion.

Structural design and drawings produced in-house — no third-party engineers to coordinate
Certified on completion by an Independent Chartered Engineer
Request a Consultation →

Not sure if your attic is suitable for conversion? We assess suitability and give you full cost clarity — before any fees.

How It Works

A Structured Process Built Around Your Budget

BuildTech follows a clear four-step pathway — from initial feasibility through to completed construction — designed to protect your budget and keep your project on track.

1
Feasibility
Budget & scope clarity before any design work begins
Design
Measured survey, technical layout & cost plan
2
3
Planning
Managed application where required — many extensions are exempt
Build
On-time, on-budget delivery with full project management
4
Why BuildTech

Why Choose BuildTech for Your Attic Conversion?

BuildTech is a specialist design and build contractor. We manage structural design, planning, and construction in-house — meaning your attic conversion is coordinated by a single team from feasibility to handover.

We do not progress any project without a clear, agreed budget. If your attic is not suitable for conversion, or if the cost does not align with your expectations, we will tell you clearly and honestly at the outset.

We do not progress projects without a clear, agreed budget — always
In-house structural design — no delays coordinating separate structural engineers
Many Velux-type attic conversions are planning exempt — we confirm this first
All works certified by an Independent Chartered Engineer on completion
How It Works

Our Planning Application Process

BuildTech manages the full planning permission process from initial feasibility through to decision. Every stage is handled internally — there are no third-party handoffs that cause delays or miscommunication.

1

Feasibility & Exemption Check

We confirm whether your project requires planning permission or qualifies as Exempted Development. Many single-storey rear extensions in Dublin do not need planning — we establish this clearly at the outset, saving you time and fees.

2

Pre-Planning Strategy & Local Authority Engagement

Where planning is required, we develop a pre-planning strategy aligned with the relevant local authority's development policies. Where appropriate, we engage with the planning authority informally before submission to identify potential issues early and reduce the risk of refusal.

3

Planning Drawings & Documentation

Our in-house architectural design team prepares all required drawings — site location map, site plan, floor plans, elevations, and sections — along with any supporting reports and compliance documentation. Accurate, complete documentation reduces the risk of requests for further information from the council.

4

Submission & Application Management

We prepare and submit the full application to the relevant local authority — Dublin City Council, Dún Laoghaire-Rathdown, Fingal, or South Dublin County Council. We manage all correspondence and respond to any requests for further information within the statutory timeframes.

5

Decision Monitoring & Next Steps

We monitor the application through to decision — typically 8–12 weeks from submission. On receipt of planning permission, we advise on any conditions attached and prepare the project for the next stage: cost and technical design, or construction if design is already complete.

Common Issues

What Can Cause Delays or Refusals in Planning Applications?

Delays and refusals in planning applications are almost always avoidable with proper preparation. The most common causes in Dublin are:

Incomplete documentation

Missing drawings, incorrect scale, or absent site information trigger requests for further information — adding weeks to the process.

Policy conflicts

Designs that don't align with the local development plan — on height, scale, overlooking, or amenity — attract objections or conditions.

No pre-planning engagement

Submitting without checking with the planning authority first misses an opportunity to identify issues before they become formal refusal reasons.

Wrong application type

Applying for full permission when the works are Exempted Development — or vice versa — wastes time and money. We confirm the correct route at feasibility stage.

Exempted Development

What Can You Build Without Planning Permission in Dublin?

Many home extensions and improvements in Dublin qualify as Exempted Development under the Planning and Development Regulations — meaning no planning application is required. However, exemptions are subject to specific conditions and can be lost if previous unauthorised works exist on the property.

Common Exempted Development for residential properties includes:

Single-storey rear extensions up to 40m² (combined with any previous extensions) — provided the rear garden is not reduced below 25m²
Attic conversions using Velux-type rooflights that do not increase the ridge height or alter the front roofline
Domestic garages and sheds — subject to floor area and height limits
Solar PV panels and heat pump installations — subject to specific criteria

Not sure if your project needs planning?

BuildTech confirms planning status as part of every feasibility consultation — before any design fees are committed. If your project is Exempted Development, we will tell you clearly and save you the cost of an application.

Request a Feasibility Consultation →
Common Questions

Frequently Asked Questions

Many attic conversions using Velux-type rooflights are Exempted Development — no planning required — provided the conversion does not increase the ridge height, does not alter the front roofline, and the rooflights do not project more than 150mm above the roof plane. Dormer windows and any changes to the external appearance of the roof will typically require planning permission. BuildTech confirms planning status at the feasibility stage.
A straightforward attic conversion to create a bedroom or home office typically costs €25,000 to €50,000, depending on the roof structure, the level of finish, and whether an en suite is included. A full dormer conversion will typically cost more. BuildTech provides an accurate, project-specific cost plan at the feasibility stage.
The key factors are: head height (minimum 2.2m at the ridge is ideal), the existing roof structure (traditional cut rafter roofs are easier to convert than modern trussed rafters), floor joist capacity, and access — a proper staircase is required, which needs space on the floor below. BuildTech assesses all of these at the structural feasibility stage.
A standard attic conversion typically takes 8 to 14 weeks from construction start to completion, depending on complexity. BuildTech provides a detailed programme at the technical design stage.
BuildTech's minimum project value is €100,000. Some attic conversions may qualify as part of a larger renovation or extension project. If your project is below this threshold, we will tell you clearly at the outset.
What We Do

Our Services

BuildTech is a specialist design and build contractor. We take on a focused range of projects — and we do not progress any project without a clear, agreed budget.

Single-Storey Rear Extension ★ Core

The most common home project in Dublin. Open-plan kitchen and living, utility room, or additional family space — from feasibility through to a certified, compliant build.

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Home Renovation

Whole-home renovations and structural alterations for Dublin homeowners. Internal reconfigurations, layout redesign, and full refurbishment — all budget-led from day one.

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Feasibility Consultation Start Here

€200 call or €500 home visit. We establish what is realistically achievable within your budget before any design work begins — saving you time, money, and stress.

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Planning Permission

Full application management — pre-planning strategy, drawings, submission, and decision monitoring. Many extensions are planning exempt; we confirm this first.

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Already Have Plans?

Cost Planning & Construction Review from €2,500 + VAT. We provide a full cost breakdown of your existing drawings — gap identification, budget alignment, and value engineering.

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Cost & Technical Design

Measured survey, technical layout, and a detailed cost plan — all aligned to your budget before construction begins. No over-specified designs that cannot be built within your means.

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Take the First Step

Ready to Convert Your Attic?

A BuildTech feasibility consultation assesses structural suitability and gives you full cost clarity — before any design or construction fees are committed. We do not progress projects without a clear, agreed budget.

No obligation. No pressure. Just honest advice.

Call Us Get a Consultation