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.

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

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
Why Insulate Your Home?

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
Request a Consultation →
Home insulation Dublin — BuildTech SEAI registered insulation installation
SEAI registered contractor Grants managed for you
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."

M
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."

External wall insulation installation — BuildTech Dublin home
Documentation prepared in-house No third-party delays
Types of Insulation

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
Request a Consultation →

Considering home insulation? We assess your home, confirm the grants, and install to a clear, agreed cost.

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 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.

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

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.
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 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.

No obligation. No pressure. Just honest advice.

Call Us Get a Consultation