- Company number
- 17479777
- Incorporated
- 24 Sep 2026
- Registered office
- Flat 345 Sulivan Court, Peterborough Road, London, SW6 3BZ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Basileus 17 Construction Ltd is a newly incorporated private limited company registered in London, company number 17479777, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 24 June 2028, and its first CT600 is due at HMRC on 23 September 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 Basileus 17 Construction Ltd is registered
The registered office is in London (SW6), in the Hammersmith and Fulham local authority area, London. Show SW6 3BZ on a map.
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What happens if Basileus 17 Construction 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 24 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 25 Jun 2028 to 24 Jul 2028 | £150 |
| 1 to 3 months late | 25 Jul 2028 to 24 Sep 2028 | £375 |
| 3 to 6 months late | 25 Sep 2028 to 24 Dec 2028 | £750 |
| More than 6 months late | From 25 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17479777
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 September 2026
- Registered office
- Flat 345 Sulivan Court, Peterborough Road, London, SW6 3BZ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
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.
- Bask Construction Ltd2018
- Baskent Consulting Ltd2016
- Bassa Developments Limited2020
- Bassett Workwear Ltd2026
- Bataru Ltd2021
- Batcombe Estate Limited2025
- Bath & Bath Construction Ltd2026
- Bati Conseil Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Basileus 17 Construction Ltd's accounts due?
Basileus 17 Construction Ltd's next accounts are due at Companies House by 24 June 2028 (in 620 days), covering the period to 30 September 2027.
When is Basileus 17 Construction 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 23 September 2027, due by 23 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Basileus 17 Construction Ltd still trading?
Basileus 17 Construction 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 Basileus 17 Construction Ltd do?
Basileus 17 Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Basileus 17 Construction Ltd?
Basileus 17 Construction Ltd was incorporated on 24 September 2026, less than a year ago.
What is the penalty if Basileus 17 Construction 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 Basileus 17 Construction 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.