# Cornerstone (East Anglia) Limited

Cornerstone (East Anglia) Limited is an insulation installer in Harleston. Rated 4.9/5 from 3 public reviews across 1 review source. This is the MyTrustedTraders public-evidence profile — independent reviews, credentials and registry data from named public sources, with no ads and no paid placement.

Trust score: 57/100

Independent sources agree they've been operating since at least 2004 — that's 22 years, confirmed across 2 separate sources.

## About
Insulation in Harleston, Norfolk.

## Public review evidence (by source)
| Source | Average rating | Reviews |
| --- | --- | --- |
| Checkatrade | 4.9/5 | 3 |

_Per-source review counts may overlap — they need not sum to the 3 cross-checked total above._

Most recent review: 4 years ago.

## In customers' own words
_Verbatim quotes from this trader's public reviews, each attributed to its source:_
> "You only know how good a company is when some thing goes wrong. Wow did Cornerstone impress me! I had a very minor bit of the render coating had came away after 4 years, I contacted Cornerstone with pictures and they sent a external surveyor to look at my property. Then I had numerous updates and contact from ADAM at Cornerstone who arranged scaffolding contractors and other contractors to partly redo the front of my house. All of this done in the middle of a pandemic, with no excuses and fantastic communication throughout with Adam. At no cost. Thank you Adam and the team at..."
> — Anonymous (5.0, via Checkatrade)

> "Having researched a couple of companies and sought out several quotes I discovered Cornerstone. From the beginning they were thorough, professional and were happy to visit site a couple of times to discuss my queries if they couldn't be dealt with on the phone. The workforce were prompt and thorough with the only delays being due to prolonged rain. Nothing was too much for Joel, Wes, the install team or indeed Paul who even fitted my new slate sign to the Cottage. I will certainly contact them again for my next project."
> — Anonymous (5.0, via Checkatrade)

> "Cornerstone did a fabulous job of insulating the outside of our100 year old cottage. The onsite building team arrived early and left late, always making sure to tidy up every evening and keeping us updated at each stage. We are very pleased with the difference it has made to the interior temperature of the house and it all looks great from the outside as well."
> — Anonymous (4.8, via Checkatrade)

## Trades
Insulation installer

## Independent verification
_What MyTrustedTraders independently checked for this business (verified items only):_
- Review volume: MTT is showing 3 public reviews on this profile. (via MyTrustedTraders public listing)
- Public listing spread: MTT is showing 2 public listings for this trader. (via MyTrustedTraders public listing)
- Business identity: MTT is showing public business identity data for company number 05117129 with operating status active. (via MyTrustedTraders public listing)

Full verification checklist: https://mytrustedtraders.com/traders/cornerstone-east-anglia-limited/checks

## Credentials & sources
- Credentials shown: 0
- Companies House status: active
- Evidence held from: Checkatrade, Companies House, Companies House Officers
- Public evidence last checked May 2026

## Before you hire an insulation installer
_What to check when choosing this kind of trade — general guidance, not a claim about this business:_
- Look for consistent reviews across several named sources, not one polished profile.
- Check any credential evidence, and that the business details independently check out.
- Get a written quote and keep guarantee, insurance and payment terms in writing.
- Run the Cowboy Checker before you commit to anyone.

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Source: MyTrustedTraders — https://mytrustedtraders.com/traders/cornerstone-east-anglia-limited
Real public evidence only: every figure traces to a named source and is cross-checked. If a source does not carry a field, it is not shown.