- Company number
- 16595487
- Incorporated
- 21 Jul 20251 year trading
- Registered office
- 84 Gables Close, London, SE12 0UE
- Nature of business
- Construction of domestic buildings
Karti Building Contractors Ltd is a 1-year-old private limited company registered in London, company number 16595487, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 21 April 2027, and its first CT600 is due at HMRC on 20 July 2027.
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 Karti Building Contractors Ltd is registered
The registered office is in London (SE12), in the Lewisham local authority area, London. Show SE12 0UE on a map.
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What happens if Karti Building Contractors 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 21 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 Apr 2027 to 21 May 2027 | £150 |
| 1 to 3 months late | 22 May 2027 to 21 Jul 2027 | £375 |
| 3 to 6 months late | 22 Jul 2027 to 21 Oct 2027 | £750 |
| More than 6 months late | From 22 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16595487
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 July 2025 (1 year ago)
- Registered office
- 84 Gables Close, London, SE12 0UE
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (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.
- Kas Civil Limited2018
- Kasa Construction Limited2023
- Kasar H M Ltd2026
- Kasco Builders Ltd2026
- Kaseno Group Ltd.2015
- Kasev Construction Ltd2017
- Kashir Real Estate & Builders Limited2025
- Kashmir Construction Ltd2022
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Karti Building Contractors Ltd's accounts due?
Karti Building Contractors Ltd's next accounts are due at Companies House by 21 April 2027 (in 190 days), covering the period to 31 July 2026.
When is Karti Building Contractors 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 20 July 2026, due by 20 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Karti Building Contractors Ltd still trading?
Karti Building Contractors Ltd is listed as active on the Companies House register (checked 13 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 Karti Building Contractors Ltd do?
Karti Building Contractors Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Karti Building Contractors Ltd?
Karti Building Contractors Ltd was incorporated on 21 July 2025, 1 year ago.
What is the penalty if Karti Building Contractors 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 Karti Building Contractors Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.