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Design, Cost & Planning

Home Insulation Dublin — Warmer Home, Lower Bills, SEAI Grants Available

BuildTech installs home insulation for Dublin homeowners as SEAI registered contractors. External wall insulation, attic insulation, floor insulation, and cavity wall insulation — all managed with SEAI grant funding deducted from your cost.

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0818 333 443
  • 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
  • SEAI registered — insulation grant application managed on your behalf
  • Serving Greater Dublin — CIRI registered, fully insured, 100+ projects delivered

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

Our team will respond within 1 business day.

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  • CIRI REGISTERED

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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

Feasibility First

The Single Most Cost-Effective Home Improvement in Ireland

Improving your home’s insulation is the single most cost-effective energy upgrade you can make. Proper insulation reduces heat loss, cuts energy bills, improves comfort in winter and summer, and significantly increases your home’s BER rating — which affects its value and mortgageability.

SEAI grants make insulation upgrades significantly more affordable. As SEAI registered contractors, BuildTech manages the grant application on your behalf — and confirms the net cost to you before any work begins.

  • Energy assessment — existing insulation levels reviewed and upgrade options identified
  • SEAI grant application managed on your behalf — grant amounts confirmed at outset
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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

External Wall, Attic, Floor, and Cavity Wall Insulation — All In-House

BuildTech installs all types of residential insulation in-house — external wall insulation (the most effective for older Dublin homes with solid walls), attic insulation, floor insulation, and cavity wall insulation for cavity-wall properties. We advise on the most appropriate solution for your home type.

Every insulation installation is carried out by qualified installers, and the completed works are eligible for a BER assessment to demonstrate the improvement in energy performance.

  • External wall insulation — most effective for pre-1940s Dublin homes with solid walls
  • Attic insulation — the highest-impact single measure for most Dublin homes
  • Floor and cavity wall insulation — where construction type permits
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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 Home Insulation?

BuildTech is SEAI registered for all types of residential insulation. We assess your home’s insulation needs, manage the SEAI grant application, and install the appropriate solution — all through a single contractor.

We recommend the most appropriate insulation solution for your home type — not the most expensive option. If your home is not suitable for a particular insulation type, we will tell you clearly and advise on alternatives.

  • We do not progress projects without a clear, agreed budget — always
  • SEAI registered — full grant application managed on your behalf
  • Honest assessment — we recommend the right solution for your home type
  • Cost confirmed before work begins — total cost confirmed before work begins
  • BER certificate available on completion to confirm improved energy rating
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.

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.

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.

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.

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.

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

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

SEAI grants are available for external wall insulation (up to €8,000 for a detached house), attic insulation (up to €1,500), cavity wall insulation (up to €1,700), and floor insulation (up to €3,500). The exact grant amount depends on the property type and size. BuildTech confirms your eligibility and manages the application.
It depends on your home's construction type. Pre-1940s Dublin homes typically have solid walls — external wall insulation is the most effective solution. Post-1940s cavity-wall homes can benefit from cavity wall insulation. Attic insulation is the single highest-impact measure for most Irish homes regardless of construction type. BuildTech assesses your home and recommends the most appropriate solution.
External wall insulation of a typical Dublin semi-detached house typically costs €15,000 to €30,000 gross, before the SEAI grant of up to €8,000 is applied. Attic insulation typically costs €1,500 to €3,000 gross before grants. BuildTech confirms the net cost — after all applicable grants — before any work begins.
Attic insulation typically takes 1 day. Cavity wall insulation typically takes 1–2 days. External wall insulation takes 2–6 weeks depending on the size of the property. BuildTech will confirm the programme before work begins.
External wall insulation changes the external appearance of the home — it adds thickness to the walls and is finished with a render coat that can be coloured. Most homeowners find the finish improves the appearance of their home. Attic, floor, and cavity wall insulation have no visible external impact.

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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.

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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.

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.

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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 Insulate Your Dublin Home?

BuildTech assesses your home’s insulation needs, manages the SEAI grant, and installs to a clear, agreed cost — with grants deducted from your total.

Request a Consultation →
0818 333 443

No obligation. No pressure. Just honest advice.

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