- Company number
- 17211023
- Incorporated
- 11 May 2026
- Registered office
- Flat 303 Quest House North, 2 Woolmore Street, London, E14 0WS
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Karmazyn Construction Ltd is a newly incorporated private limited company registered in London, company number 17211023, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 11 February 2028, and its first CT600 is due at HMRC on 10 May 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 Karmazyn Construction Ltd is registered
The registered office is in London (E14), in the Tower Hamlets local authority area, London. Show E14 0WS on a map.
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Also registered at this address
1 other company uses the same registered office as Karmazyn Construction Ltd.
- Black Sea Construction LtdBuilders
What happens if Karmazyn 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 11 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 Feb 2028 to 11 Mar 2028 | £150 |
| 1 to 3 months late | 12 Mar 2028 to 11 May 2028 | £375 |
| 3 to 6 months late | 12 May 2028 to 11 Aug 2028 | £750 |
| More than 6 months late | From 12 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 17211023
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 May 2026
- Registered office
- Flat 303 Quest House North, 2 Woolmore Street, London, E14 0WS
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 May (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.
- Karnelle Ltd2026
- Karo Construction Ltd2024
- Karol4 Construction Ltd2022
- Karoon Limited2021
- Karti Building Contractors Ltd2025
- Kas Civil Limited2018
- Kasa Construction Limited2023
- Kasar H M Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Karmazyn Construction Ltd's accounts due?
Karmazyn Construction Ltd's next accounts are due at Companies House by 11 February 2028 (in 486 days), covering the period to 31 May 2027.
When is Karmazyn 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 10 May 2027, due by 10 May 2028, and one for the period to 31 May 2027, due by 31 May 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Karmazyn Construction Ltd still trading?
Karmazyn 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 Karmazyn Construction Ltd do?
Karmazyn Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Karmazyn Construction Ltd?
Karmazyn Construction Ltd was incorporated on 11 May 2026, less than a year ago.
What is the penalty if Karmazyn 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 Karmazyn 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.