# J and J Building Construction

J and J Building Construction is a concrete contractor in London. Rated 4.8/5 from 34 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: 63/100

8 reviews in the last year.

## About
J and J Building Construction have been supporting customers for over 40 years. We take on all general building works such kitchens, bathrooms, loft conver

## Public review evidence (by source)
| Source | Average rating | Reviews |
| --- | --- | --- |
| Rated People | 4.8/5 | 34 |

_Per-source review counts may overlap — they need not sum to the 34 cross-checked total above._

Most recent review: 6 months ago.

## Often reviewed for
_Job types repeatedly named in this trader's own public reviews:_
- Home Improvements (3 reviews)

## In customers' own words
_Verbatim quotes from this trader's public reviews, each attributed to its source:_
> "We hired this construction company to handle Christmas lights installation across several of our projects, and the experience was excellent from start to finish. Their team was always on time, highly professional, and extremely skilled in their work. The quality of the installations exceeded our expectations, and most importantly, our clients were truly satisfied with the results. We will definitely be using their services again in the future and highly recommend them."
> — Milana (5.0, via Rated People)

> "We hired this construction company to handle Christmas lights installation across several of our projects, and the experience was excellent from start to finish. Their team was always on time, highly professional, and extremely skilled in their work. The quality of the installations exceeded our expectations, and most importantly, our clients were truly satisfied with the results. We will definitely be using their services again in the future and highly recommend them."
> — Milana (5.0, via Rated People)

> "John and Yuri recently completed wall insulation at my property and I'm very happy with their work. The quality is high, everything was done professionally, and there were no extra costs beyond what we agreed. I would definitely recommend them."
> — Dzmitry (5.0, via Rated People)

## Trades
Concrete contractor, Demolition contractor, Siding / cladding contractor

## Independent verification
_What MyTrustedTraders independently checked for this business (verified items only):_
- Review volume: MTT is showing 34 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 with operating status unknown. (via MyTrustedTraders public listing)

Full verification checklist: https://mytrustedtraders.com/traders/j-and-j-building-construction/checks

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

## Before you hire a concrete contractor
_What to check when choosing this kind of trade — general guidance, not a claim about this business:_
- Ask to see a portfolio of completed work like yours, plus recent references you can contact.
- Check the credentials and registrations that matter for this work — and that they are current.
- Get a written, itemised quote with scope, assumptions and a staged payment schedule.
- Compare at least three concrete contractors on the depth of their evidence, not just price.

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Source: MyTrustedTraders — https://mytrustedtraders.com/traders/j-and-j-building-construction
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.