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- ST Building Projects Ltd
Company profile · Finishing trades
ST Building Projects Ltd
ST Building Projects Ltd is a newly incorporated private limited company registered in Portsmouth, company number 17131498, one of 137 building finishing companies in Portsmouth. Its next accounts are due at Companies House on 1 January 2028, and its first CT600 is due at HMRC on 31 March 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where ST Building Projects Ltd is registered
The registered office is in Portsmouth (PO3), in the Portsmouth local authority area, South East. Show PO3 5LS on a map.
Other trade companies in PO3
- GJM Construction LtdBuilders
- Al Fajar Building LimitedFinishing trades
- New Milton Decor LtdPainters and decorators
- Portsmouth Autos LtdMechanics and garages
- Henley Roofing Group LimitedInstallers
- I’M Covered 365 Ac LtdPlumbers and heating engineers
- Scope Bodyshop LtdMechanics and garages
- GP Technical LtdSpecialist contractors
What happens if ST Building Projects 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 1 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Jan 2028 to 1 Feb 2028 | £150 |
| 1 to 3 months late | 2 Feb 2028 to 1 Apr 2028 | £375 |
| 3 to 6 months late | 2 Apr 2028 to 1 Jul 2028 | £750 |
| More than 6 months late | From 2 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 17131498
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 April 2026
- Registered office
- 2 Military Road, Hilsea, Portsmouth, PO3 5LS
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Portsmouth
Other active building finishing companies registered in Portsmouth.
- Stewart Interiors (Hampshire) Limited2023
- T & J Decorators Limited2014
- Tech Duct Ventilation Services Ltd2021
- The Loft Conversion Company (Portsmouth) Limited2003
- Topgun Sealant Limited2019
- Trade Mates Property Developments Limited2014
- TSC Maintenance Services Ltd2024
- TWF Building Services Limited2016
All building finishing companies in Portsmouth · All trades in Portsmouth · Finishing trades across the UK
Frequently asked questions
When are ST Building Projects Ltd's accounts due?
ST Building Projects Ltd's next accounts are due at Companies House by 1 January 2028 (in 446 days), covering the period to 30 April 2027.
When is ST Building Projects Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 March 2027, due by 31 March 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is ST Building Projects Ltd still trading?
ST Building Projects 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 ST Building Projects Ltd do?
ST Building Projects Ltd is registered under Other building completion and finishing (SIC 43390).
How old is ST Building Projects Ltd?
ST Building Projects Ltd was incorporated on 1 April 2026, less than a year ago.
What is the penalty if ST Building Projects 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 ST Building Projects 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.