- Companies
- Property developers
- London
- Conversion Construction Company Limited
Conversion Construction Company Limited
- Company number
- 09622870
- Incorporated
- 4 Jun 201511 years trading
- Registered office
- 58 Green Lane, London, KT3 5BU
- Nature of business
- Development of building projects
Conversion Construction Company Limited is a 11-year-old private limited company registered in London, company number 09622870, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
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 £1,163 (+584.4%) on the year before, to £1,362.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £4,405 against £4,627 owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2026 | £1,362 | £4,405 | £4,627 | 1 | |
| 30 Jun 2025 | £199 | £6,442 | £5,103 | 1 | |
| 30 Jun 2024 | £3,344 | £2,952 | £5,156 | 1 | |
| 30 Jun 2023 | £806 | £7,296 | £5,350 | 1 | |
| 30 Jun 2022 | £2,281 | £5,959 | £7,100 | 1 | |
| 30 Jun 2021 | £786 | £6,163 | £6,896 | 1 | |
| 30 Jun 2020 | £2 | £3,852 | £4,397 | 1 | |
| 30 Jun 2019 | £4,903 | £11K | £7,010 | ||
| 30 Jun 2018 | £6,141 | £11K | £5,586 | ||
| 30 Jun 2017 | £5,839 | £15K | £11K |
Where Conversion Construction Company Limited is registered
The registered office is in London (KT3), in the Kingston upon Thames local authority area, London. Show KT3 5BU on a map.
Other trade companies in KT3
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- 00 Transport LtdMechanics and garages
- Denabuild Construction LtdBuilders
- PB Gardening LtdLandscapers and gardeners
What happens if Conversion Construction Company Limited 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 31 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2029 | 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
- 09622870
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 June 2015 (11 years ago)
- Registered office
- 58 Green Lane, London, KT3 5BU
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 4 June 2026
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.
- Conville Limited2000
- Conward Property Investment Company Limited1958
- Coobbs Limited2018
- Cooke Cardiff Limited2016
- Cookham Data Centre Limited2026
- Cool Construction Group Ltd2022
- Coomb House (UK) Limited2019
- Coombe Acquisitions Ltd2016
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Conversion Construction Company Limited's accounts due?
Conversion Construction Company Limited's next accounts are due at Companies House by 31 March 2028 (in 536 days), covering the period to 30 June 2027.
When is Conversion Construction Company Limited's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is Conversion Construction Company Limited still trading?
Conversion Construction Company Limited 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 Conversion Construction Company Limited do?
Conversion Construction Company Limited is registered under Development of building projects (SIC 41100).
How old is Conversion Construction Company Limited?
Conversion Construction Company Limited was incorporated on 4 June 2015, 11 years ago.
What is the penalty if Conversion Construction Company Limited 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 Conversion Construction Company Limited 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.