- Company number
- 12352434
- Incorporated
- 6 Dec 20196 years trading
- Registered office
- 25 Cabot Square, London, E14 4QZ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other specialised construction activities n.e.c.; General cleaning of buildings
Construction Square Ltd is a 6-year-old private limited company registered in London, company number 12352434, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £146K (-100.1%) on the year before, to -£293K.
- Net assets rose in 0 of 3 year-on-year comparisons on record.
- Current assets of £4,265 against £299K owed within a year: 0.0 times cover.
- 7 employees on average, up from 6 the year before.
- Balance sheets on record for 4 years, 2020 to 2023.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2023 | -£293K | £3,245 | £4,265 | £299K | 7 |
| 31 Dec 2022 | -£146K | £69K | £70K | £216K | 6 |
| 31 Dec 2021 | -£41K | £20K | £22K | £62K | 3 |
| 31 Dec 2020 | -£14K | £333 | £14K | 2 |
Public contracts won
Construction Square Ltd has one public sector contract award on record; the ones with their own published value total £115K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| The District Council of Folkestone and Hythe | Garage refurbishment Works 2026 | £115K | 7 Apr 2026 |
Where Construction Square Ltd is registered
The registered office is in London (E14), in the Tower Hamlets local authority area, London. Show E14 4QZ on a map.
Other trade companies in E14
- Clarke & Lloyds Technologies LtdSpecialist contractors
- London Dev Grays LimitedProperty developers
- London Dev Sittingbourne LimitedProperty developers
- London Dev Dagenham LimitedProperty developers
- JK Motor Vehicles LtdMotor traders
- Eilunio LtdProperty developers
- Gasi Cleaning Co LtdCleaning companies
- Lustrouk LimitedCleaning companies
Also registered at this address
7 other companies use the same registered office as Construction Square Ltd.
- Beim Services LtdProperty developers
- Butterfly Virginia Park LtdProperty developers
- Enviraboard LtdSpecialist contractors
- Global Consulting & Monitoring LtdProperty developers
- Haarp Logistics LtdMachinery repair and installation
- M1Llion Developments LtdProperty developers
- The Remarkable 2020 LtdProperty developers
What happens if Construction Square Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 12352434
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 December 2019 (6 years ago)
- Registered office
- 25 Cabot Square, London, E14 4QZ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999)
General cleaning of buildings (SIC 81210) - Year end
- 31 December (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 19 October 2025
- Previous names
- Cold Square Ltd (until 19 Aug 2025)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Construction UK 365 Limited2022
- Construction Vip Ltd2025
- Construction Work 4 U Ltd2024
- Construction-Mrinomjon Ltd2026
- Construction.RR Ltd2018
- Constructions 4 Life Ltd2022
- Constructorama Solutions Ltd2023
- Constructya Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Construction Square Ltd's accounts due?
Construction Square Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Construction Square Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Construction Square Ltd still trading?
Construction Square Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Construction Square Ltd do?
Construction Square Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999); General cleaning of buildings (SIC 81210).
How old is Construction Square Ltd?
Construction Square Ltd was incorporated on 6 December 2019, 6 years ago.
Has Construction Square Ltd won public sector contracts?
Yes. Construction Square Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £115K), most recently from The District Council of Folkestone and Hythe.
What is the penalty if Construction Square Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Construction Square Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.