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County Antrim · Northern Ireland

Cavity wall insulation for landlords in County Antrim

For landlords, filling an empty cavity is usually one of the lowest-cost ways to improve an EPC rating. Our County Antrim coverage includes Belfast, Lisburn, Newtownabbey and the towns around them.

Row of red brick terraced houses with party walls rising through the roofline

Free survey in County Antrim

Tell us about the property and we will arrange a free survey and a fixed price.

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We use your details only to answer this enquiry and arrange your visit, sharing them only with the registered installer we appoint for your job and the providers named in our privacy notice. No marketing lists, no cold calls.

Cavity wall insulation for landlords across County Antrim

We cover 7 towns in County Antrim, including Belfast, Lisburn, Newtownabbey, Carrickfergus, Ballymena and more.

Every elevation is judged on its own exposure. Parts of County Antrim face some of the heaviest wind-driven rain in the UK, especially exposed coastal and upland sites. Here the survey is stricter: some walls suit only certain certified systems, and some should not be filled at all.

For commercial buildings in County Antrim, the survey also considers building use and fire requirements before a material is specified. Blocks of flats in County Antrim are surveyed as a whole, because the cavity runs across every flat in the building.

Building control in Northern Ireland

In Northern Ireland, inserting insulation into an existing cavity wall needs a building control application to your council before the work. We make sure the application route is agreed and confirmed in writing before any drilling starts.

Funding in Northern Ireland

  • The Affordable Warmth Scheme, run with the NI Housing Executive, helps owner-occupiers and private tenants with a total gross household income under £23,000; cavity wall insulation is a priority measure where suitable.
  • The NI Sustainable Energy Programme funds energy efficiency schemes through participating providers.
  • ECO4 does not apply in Northern Ireland.

Sources: Building Control NI: frequently asked questions; Belfast City Council: what are the building regulations; NI Housing Executive: Affordable Warmth Scheme; Utility Regulator: NI Sustainable Energy Programme.

How we work with portfolios

One contact, one schedule. We survey in batches, return a simple sheet per address, and book installs around your tenants. Access arrangements and tenant notices are handled with your agent if you prefer.

What is included

  • Batch surveys
  • Per-property result sheet
  • Fixed prices per address
  • Tenant-friendly booking
  • Photo records for your files

Cavity wall insulation for landlords prices in County Antrim

Cavity wall insulation for landlords guide prices
Cavity wall insulation for landlords guide pricesGuide price
Detached house£2,295–£3,795
Semi-detached house£1,495–£2,495
End-terrace house£1,295–£2,195
Detached bungalow£1,295–£2,195
Semi-detached bungalow£895–£1,595
Mid-terrace house£795–£1,395

No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.

What happens next for a County Antrim property:

  1. Get in touch

    Online, by phone or WhatsApp, whichever suits you.

  2. Survey visit

    The surveyor checks each wall and looks into the cavity where needed.

  3. Your result in writing

    What we found, what it means, and a fixed price if work is needed.

  4. Booked work

    Carried out by the installer named on your quote, with their scheme registrations.

Last reviewed 19 October 2026.

Cavity wall insulation for landlords in County Antrim: questions

Do you cover all of County Antrim?

Yes. We cover 7 towns across County Antrim, including Belfast, Lisburn, Newtownabbey and Carrickfergus, and the villages around them. Island and remote addresses are surveyed by arrangement.

Is the survey free in County Antrim?

Yes when it is for an install quote. Standalone reports for County Antrim buyers, sellers or landlords who do not need an install quote are priced before you book.

Is there VAT on cavity wall insulation for landlords in County Antrim?

Installing insulation in a home is currently zero-rated for VAT until 31 March 2027, then 5%. Commercial buildings are standard-rated.

Do you cold-call in County Antrim?

No. We only come out when you have asked us to. If someone cold-calls offering free insulation, check before you agree to anything.

Cavity wall insulation for landlords in nearby areas

Book a free survey in County Antrim

Free survey with an install quote. Written result. Fixed price before any work.