- Companies
- Joiners and carpenters
- London
- Koci Building Ltd
Koci Building Ltd
- Company number
- 16695549
- Incorporated
- 4 Sep 20251 year trading
- Registered office
- 44 Woodlands Park Road, London, N15 3RX
- Nature of business
- Joinery installation; Other building and industrial cleaning activities
Koci Building Ltd is a 1-year-old private limited company registered in London, company number 16695549, one of 692 joinery companies in London. Its next accounts are due at Companies House on 4 June 2027, and its first CT600 is due at HMRC on 3 September 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.
Is this your company?
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Where Koci Building Ltd is registered
The registered office is in London (N15), in the Haringey local authority area, London. Show N15 3RX on a map.
Other trade companies in N15
- Cleanport Services LtdCleaning companies
- Rozelle Cleaning LtdCleaning companies
- Hunt4Heating LtdPlumbers and heating engineers
- Clean Stitch LtdRepair services
- Watt Rite LtdElectricians
- Did-Fit LimitedPlasterers
- Arvin Cleaning Ltd LtdCleaning companies
- North London Building Control LimitedSpecialist contractors
What happens if Koci Building 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 4 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Jun 2027 to 4 Jul 2027 | £150 |
| 1 to 3 months late | 5 Jul 2027 to 4 Sep 2027 | £375 |
| 3 to 6 months late | 5 Sep 2027 to 4 Dec 2027 | £750 |
| More than 6 months late | From 5 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16695549
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 September 2025 (1 year ago)
- Registered office
- 44 Woodlands Park Road, London, N15 3RX
- Nature of business
- Joinery installation (SIC 43320)
Other building and industrial cleaning activities (SIC 81229) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for joinery companies
Joinery companies can carry stock and work in progress at the year end, especially bespoke workshop work, and that figure moves the profit for the year.
Similar companies in London
Other active joinery companies registered in London.
- Kranston Kitchens Ltd2016
- Krasniqi Carpentry & Joinery Ltd2025
- Krispar Repairs & Maintenance Limited2013
- Krusini Design Ltd2016
- KSF Kitchen Supply Fit Ltd2023
- Kucnos Ltd2023
- Kutchenhaus Wokingham Limited2025
- L Astra Contractors Ltd2026
All joinery companies in London · All trades in London · Joiners and carpenters across the UK
Frequently asked questions
When are Koci Building Ltd's accounts due?
Koci Building Ltd's next accounts are due at Companies House by 4 June 2027 (in 234 days), covering the period to 30 September 2026.
When is Koci Building 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 3 September 2026, due by 3 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Koci Building Ltd still trading?
Koci Building 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 Koci Building Ltd do?
Koci Building Ltd is registered under Joinery installation (SIC 43320); Other building and industrial cleaning activities (SIC 81229).
How old is Koci Building Ltd?
Koci Building Ltd was incorporated on 4 September 2025, 1 year ago.
What is the penalty if Koci Building 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 Koci Building 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.