- Company number
- 16064563
- Incorporated
- 6 Nov 20241 year trading
- Registered office
- 50 Arnulf Street, London, SE6 3EQ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Bartka Build Ltd is a 1-year-old private limited company registered in London, company number 16064563, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 6 November 2026, and its first CT600 is due at HMRC on 5 November 2026.
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 Bartka Build Ltd is registered
The registered office is in London (SE6), in the Lewisham local authority area, London. Show SE6 3EQ on a map.
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What happens if Bartka Build 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 6 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 Nov 2026 to 6 Dec 2026 | £150 |
| 1 to 3 months late | 7 Dec 2026 to 6 Feb 2027 | £375 |
| 3 to 6 months late | 7 Feb 2027 to 6 May 2027 | £750 |
| More than 6 months late | From 7 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 2027 | 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
- 16064563
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 November 2024 (1 year ago)
- Registered office
- 50 Arnulf Street, London, SE6 3EQ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 5 November 2025
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.
- Barts Constructions24 Ltd2020
- Bas Development Company Ltd2023
- Bascomb & Drew Maintenance Ltd2014
- Baseline Build and Renovate Ltd2018
- Baseline Build and Surveying Ltd2026
- Basement Shell Ltd2021
- Bash Construction Ltd2023
- Basik Consultant and Construction Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Bartka Build Ltd's accounts due?
Bartka Build Ltd's next accounts are due at Companies House by 6 November 2026 (in 25 days), covering the period to 30 November 2025.
When is Bartka Build 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 5 November 2025, due by 5 November 2026, and one for the period to 30 November 2025, due by 30 November 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Bartka Build Ltd still trading?
Bartka Build 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 Bartka Build Ltd do?
Bartka Build Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Bartka Build Ltd?
Bartka Build Ltd was incorporated on 6 November 2024, 1 year ago.
What is the penalty if Bartka Build 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 Bartka Build 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.