- Companies
- Property developers
- London
- 21 Construction Group Ltd
21 Construction Group Ltd
- Company number
- 13164004
- Incorporated
- 28 Jan 20215 years trading
- Registered office
- 230A Commercial Road, London, E1 2NB
- Nature of business
- Development of building projects; Non-specialised wholesale trade; Management consultancy activities other than financial management; Architectural activities
21 Construction Group Ltd is a 5-year-old private limited company registered in London, company number 13164004, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 30 October 2026, and the CT600 for the period to 30 January 2026 is due at HMRC on 30 January 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 up £12K (+52.4%) on the year before, to £35K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £31K against £4,328 owed within a year: 7.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jan 2025 | £35K | £31K | £4,328 | 1 | |
| 30 Jan 2024 | £23K | £18K | £3,183 | 1 | |
| 31 Jan 2023 | £18K | £12K | £3,350 | 1 | |
| 31 Jan 2022 | £1,608 | £2,409 | £801 | 1 |
Where 21 Construction Group Ltd is registered
The registered office is in London (E1), in the Tower Hamlets local authority area, London. Show E1 2NB on a map.
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What happens if 21 Construction Group 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Oct 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 30 Jan 2027 | £375 |
| 3 to 6 months late | 31 Jan 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Jan 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 30 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jan 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
- 13164004
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2021 (5 years ago)
- Registered office
- 230A Commercial Road, London, E1 2NB
- Nature of business
- Development of building projects (SIC 41100)
Non-specialised wholesale trade (SIC 46900)
Management consultancy activities other than financial management (SIC 70229)
Architectural activities (SIC 71111) - Year end
- 30 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 January 2025
- Last confirmation statement
- 18 July 2025
- Previous names
- Make A Safer Home Ltd (until 18 Jul 2025)
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- 21 Fraser Street Limited2014
- 21 Sid Limited2012
- 21 Sid Property Ltd2025
- 21 Vicar Street Developments Limited2022
- 2123 the Bridge Ltd2024
- 217 Old Ford Road Freehold Limited2020
- 219SJS Ltd2021
- 22 FRG Ltd2025
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are 21 Construction Group Ltd's accounts due?
21 Construction Group Ltd's next accounts are due at Companies House by 30 October 2026 (in 17 days), covering the period to 30 January 2026.
When is 21 Construction Group Ltd's CT600 due?
The CT600 for the period to 30 January 2026 is due at HMRC by 30 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 October 2026.
Is 21 Construction Group Ltd still trading?
21 Construction Group Ltd is listed as active on the Companies House register (checked 12 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 21 Construction Group Ltd do?
21 Construction Group Ltd is registered under Development of building projects (SIC 41100); Non-specialised wholesale trade (SIC 46900); Management consultancy activities other than financial management (SIC 70229); Architectural activities (SIC 71111).
How old is 21 Construction Group Ltd?
21 Construction Group Ltd was incorporated on 28 January 2021, 5 years ago.
What is the penalty if 21 Construction Group 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 21 Construction Group Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.