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Design, Cost & Planning

Bungalow Extension Dublin, With Your Budget Fixed Before Design

BuildTech is a specialist design and build contractor for bungalow extensions across Dublin. We start with a feasibility consultation that confirms exactly what your extension will cost, before you spend a euro on drawings. One team handles the design, planning and build, so you have a single point of contact from start to finish

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0818 333 443
  • Full cost confirmed at feasibility stage, before any design or build fees
  • One team for design, planning and construction, with no third party delays
  • Rear, side, wraparound or going up, matched to your bungalow and your budget
  • Every build certified by an Independent Chartered Engineer on completion

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

CIRI Registered

Construction Industry Register Ireland

5★ Google Rated

Verified by Dublin homeowners

CIF Member

Construction Industry Federation

100+ Projects Delivered

Across Greater Dublin Region

Feasibility First

Know What Your Extension Will Cost Before You Design It

One Certified Team for Your Whole Bungalow Extension

When you hire BuildTech, one team runs the whole project: feasibility, design, planning and construction. You are not left coordinating an architect, an engineer and a builder who have never worked together. A dedicated project manager is your single point of contact, and you can track drawings, costs and progress through your client portal at any time.

Keeping design and build under one roof means the person who priced the job is the person who delivers it, so nothing is lost between the drawing and the reality.

  • A dedicated project manager as your single point of contact throughout
  • A client portal showing your drawings, costs, progress, and everything
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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."

"Professional, reliable service with clear communication and integrity. The team kept us informed at every stage and delivered exactly what was promised. Would recommend to anyone looking for a trustworthy provider."

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★ ★ ★ ★ ★
KW
Kirsten Wendenburg
Google

"Excellent communication and budget-friendly suggestions throughout."

"Excellent communication and budget-friendly suggestions throughout. They took the time to understand our needs and offered practical options at every step. The end result exceeded our expectations."

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★ ★ ★ ★ ★
OA
Olga Antipenko
Google

"Excellent communication and support throughout. Highly recommend."

"Excellent communication and support throughout. Highly recommend. From the first call to the final handover everything was handled professionally. The team was responsive, knowledgeable and clearly cared about the outcome."

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★ ★ ★ ★ ★
JM
James Murphy
Google

"Outstanding work from start to finish. Couldn't be happier with the result."

"Outstanding work from start to finish. Couldn't be happier with the result. They were punctual, tidy and clearly took pride in their craft. The whole project came in on time and on budget."

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★ ★ ★ ★ ★
SO
Sarah O'Brien
Google

"Genuinely impressed with the quality and attention to detail."

"Genuinely impressed with the quality and attention to detail. Every aspect of the project was carefully considered and the finish is excellent. I'd use them again without hesitation."

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★ ★ ★ ★ ★
DK
David Kelly
Google

"Top-class service. Friendly team and a fair price."

"Top-class service. Friendly team and a fair price. They were upfront about everything, no hidden surprises and the work was completed to a very high standard. Already recommended them to a neighbour."

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Full Project Management

Why Choose BuildTech as Your Bungalow Extension Contractor

Homeowners choose BuildTech because the budget comes first and stays fixed. We will let you know what your bungalow extension will cost before any design work starts. 

With us, you have one team accountable for the whole build, and every project is certified by an Independent Chartered Engineer. We are a specialist extension and renovation contractor, not a general builder.

  • Fixed, transparent costing agreed before design, so there are no budget surprises
  • A specialist design and build contractor with 100+ projects delivered in Dublin
  • Member of the CIF, registered with CIRI and accredited by the CIOB
  • Public liability, employers liability and contractors all risk insurance in place
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Not sure what your home renovation will cost? We give you full cost clarity before you commit to anything.

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0818 333 443
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
Start with a Feasibility Call
Why BuildTech

Why Choose BuildTech for Your Bungalow Extension?

BuildTech is a specialist design and build contractor with extensive experience in bungalow and single-storey extensions across Dublin and the surrounding counties. We take a structured, budget-led approach to every project — establishing the full cost before any design work begins.

We do not progress projects without a clear, agreed budget. If your expectations do not align with your budget, we will tell you immediately — saving your time, money, and stress.

  • We do not progress projects without a clear, agreed budget — always
  • Specialist contractor — not a general builder — with 100+ projects delivered
  • In-house design, planning, and construction — no third-party delays
  • Certified by an Independent Chartered Engineer on completion
How It Works

Our Bungalow Extension Options to Select

A bungalow can be extended in four main ways. Selecting from the bungalow extension design ideas depends on your site, your budget and how you want to live. Looking for layout inspiration first? Browse our bungalow extension design ideas.

Rear extension

The most common choice. A rear extension opens the back of your bungalow to the garden, ideal for a larger kitchen and living area. It usually adds the most space for the least disruption, and many single-storey rear extensions are exempt from planning.

Side and wraparound extension

A side extension uses the space beside your bungalow, and a wraparound combines side and rear for an L-shaped, open-plan layout. This suits wider plots and adds room in more than one direction, while keeping the front of the house unchanged.

Flat roof or pitched roof

The roof over your extension is a cost and design decision. A flat roof, often with rooflights, is a clean and cost-effective modern option. A pitched roof sits more naturally on a traditional bungalow. We advise which fits your home and your budget at the feasibility stage.

Going up, adding a first floor

In some cases you can extend up rather than out, turning a bungalow into a two-storey or dormer home. This needs a full structural assessment of the existing foundations, and almost always needs planning permission. We check whether your bungalow can take it before you commit.

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 You Get When BuildTech Builds Your Bungalow Extension

We produce your drawings and, where needed, manage the planning application. Here is how our bungalow extension process looks like: 

Feasibility and fixed costing

Before any design, we confirm what your extension will cost and what is buildable within your budget. You get a full cost plan up front, so there are no surprises later in the build.

Design and structural drawings

Full architectural drawings shaped around your home, plus the structural design that ties the new build safely into your bungalow’s existing walls and foundations.

Planning, managed for you

We confirm whether your extension is exempt or needs permission, then handle the drawings, documentation and full application. You deal with one team, not the council.

Build, certified on completion

Construction by one team, a dedicated project manager as your point of contact, and every build certified by an Independent Chartered Engineer when it is finished.

Exempted Development

Can You Extend a Bungalow Without Planning Permission?

In many cases, yes. Under current rules, a single-storey rear extension up to 40 square metres can be exempt from planning permission, provided it meets the conditions on height, boundaries and remaining garden space. 

Not every bungalow qualifies, and going up or extending to the front usually needs permission. We confirm your exact position at feasibility.

  • Single-storey rear extensions up to 40 square metres can be exempt
  • At least 25 square metres of private open space must remain to the rear
  • Height, window and boundary conditions all apply and must be met
  • Extending upwards or to the front almost always needs planning permission

Ready to extend your bungalow?

Start with a feasibility consultation. In one conversation, you will know what your bungalow extension can realistically achieve, what it will cost, and whether it needs planning. No wasted design fees, no surprises later.

Request A Feasibility Consultation
Common Questions

Frequently Asked Questions

A single-storey bungalow extension usually takes 12 to 20 weeks on site, from the start of construction to completion. If planning permission is needed, allow a further 8 to 12 weeks for the application. You get a full project programme at the design stage, so you know your timeline before any work begins.
Sometimes, yes. Adding a full first floor to turn a bungalow into a two-storey home is possible, but it depends on your existing foundations and structure, and it almost always needs planning permission. We carry out a structural assessment at feasibility and tell you honestly whether your bungalow can take a second storey before you commit.
Often, yes. A dormer conversion raises or reshapes the roof to create habitable rooms upstairs, such as bedrooms or a home office, without building a full second storey. It suits bungalows with enough roof height, and it usually needs planning permission. We confirm whether a dormer works for your home at the feasibility stage.
Yes. We build bungalow extensions across Dublin from our base in Dublin 12, covering north, south and west Dublin and the surrounding counties. Most of our work is extensions and whole-home renovations in the Dublin suburbs. Tell us where your bungalow is at feasibility and we will confirm we cover your area.
We take on bungalow extension and whole-home renovation projects with a minimum value of €100,000. As a specialist design and build contractor, we do not take on cosmetic-only or single-trade jobs. This lets us give every project the design, project management and engineer certification it needs.

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We review your enquiry before confirming a consultation — ensuring only suitable projects proceed.

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  • Min. project €100k · No surprises

What's Included

  • Feasibility consultation included
  • Measured survey & assessment
  • Technical design package
  • Full project management
  • Engineer certification on completion

Related Services

Home Renovation

House Extension

Attic Conversion

Deep Retrofit

Feasibility Consultation

Not sure where to start?

A feasibility consultation (€200 call · €500 home visit) confirms your planning position before you spend anything on drawings.

Book Feasibility Call
Exempted Development

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

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.

Learn More

Home Renovation

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

Learn More

Feasibility Consultation

€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.

Learn More

Planning Permission

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

Learn More

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.

Learn More

Exempted Development

Recent Projects

Each project below started with a feasibility consultation and a clear budget. Here is what we delivered.

All Projects

Extension + Renovation

Full Ground Floor Renovation with Rear Extension

Location : Dublin

Scope : Ground floor knock-through, rear extension, open-plan kitchen and living

Status : Planning exempt

✓ Delivered on time and on budget

Extension + Renovation

Sandymount Seafront
Renovation

Location : Sandymount, Dublin 4

Scope : Full home renovation of period seafront property

Status : Planning exempt

✓ Full project management, completed on programme

Extension + Renovation

Rear Extension Plus Partial Renovation, Dublin 14

Location : Dublin 14

Scope : Single-storey rear extension and partial ground-floor renovation

Status : Planning exempt

✓ On budget, handover on schedule

Extension + Renovation

20 sqm Single-Storey Rear Extension, Mount Merrion

Location : Mount Merrion, South Dublin

Scope : 20 sqm flat-roof rear extension, open-plan kitchen and dining

Status : Planning exempt

✓ Completed on time and on budget

Extension + Renovation

Split-Level Open Plan Kitchen & Lounge Renovation

Location : Dublin

Scope : Structural reconfiguration, split-level open-plan kitchen and lounge

Status : Planning exempt

✓ Full project management included

Ready to Extend Your Bungalow?

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

Request a Consultation →
0818 333 443

No obligation. No pressure. Just honest advice.