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- Onyx Developments (Southern) Ltd
Company profile · Property developers
Onyx Developments (Southern) Ltd
Onyx Developments (Southern) Ltd is a 2-year-old private limited company registered in Fareham, company number 15224959, one of 157 property development companies in Fareham. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
Onyx Developments (Southern) Ltd over the years
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 £3,615 (-87.1%) on the year before, to £534.
- Current assets of £1,722 against £7,127 owed within a year: 0.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £534 | £1,722 | £7,127 | 1 | |
| 31 Oct 2024 | £4,149 | £6,124 | £1,865 | 1 |
Where Onyx Developments (Southern) Ltd is registered
The registered office is in Fareham (PO16), in the Fareham local authority area, South East. Show PO16 8AZ on a map.
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What happens if Onyx Developments (Southern) 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 15224959
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 October 2023 (2 years ago)
- Registered office
- 34 the Close, Fareham, PO16 8AZ
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 19 October 2025
- Previous names
- JS Developments Limited (until 29 Jan 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 Fareham
Other active property development companies registered in Fareham.
- Osashi2 Ltd2023
- Our Property Co. Ltd2022
- P & C Developments Twickenham Ltd2020
- P Surridge Limited2002
- Peak Projects Ltd2025
- PF Group Holdings Ltd2015
- Phoenix Ford Limited2026
- Premier Builds (South) Limited2016
All property development companies in Fareham · All trades in Fareham · Property developers across the UK
Frequently asked questions
When are Onyx Developments (Southern) Ltd's accounts due?
Onyx Developments (Southern) Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Onyx Developments (Southern) Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Onyx Developments (Southern) Ltd still trading?
Onyx Developments (Southern) 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 Onyx Developments (Southern) Ltd do?
Onyx Developments (Southern) Ltd is registered under Development of building projects (SIC 41100).
How old is Onyx Developments (Southern) Ltd?
Onyx Developments (Southern) Ltd was incorporated on 20 October 2023, 2 years ago.
What is the penalty if Onyx Developments (Southern) 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 Onyx Developments (Southern) 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.