- Companies
- Specialist contractors
- Canvey Island
- CSK Building Works Limited
CSK Building Works Limited
- Company number
- 15852324
- Incorporated
- 22 Jul 20242 years trading
- Registered office
- 16 Casino Court, Furtherwick Road, Canvey Island, Essex, SS8 7GJ
- Nature of business
- Other specialised construction activities n.e.c.
CSK Building Works Limited is a 2-year-old private limited company registered in Canvey Island, company number 15852324, one of 41 specialist construction companies in Canvey Island. Companies House shows its accounts as overdue: they were due on 22 April 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.
Is this your company?
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Where CSK Building Works Limited is registered
The registered office is in Canvey Island (SS8), in the Castle Point local authority area, East of England. Show SS8 7GJ on a map.
Other trade companies in SS8
- Beckett Contracting LimitedBuilders
- Haara Motors LtdMotor traders
- First Response Aviation Group LtdMachinery repair and installation
- GN Motorz LtdMotor traders
- Sure Compliance LtdInstallers
- Sorspeed Spediton LtdPlumbers and heating engineers
- RH Mechanical LtdPlumbers and heating engineers
- I-Dent-I-Call Bodyworks LtdMechanics and garages
What happens if CSK Building Works Limited files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Apr 2026 to 22 May 2026 | £150 |
| 1 to 3 months late | 23 May 2026 to 22 Jul 2026 | £375 |
| 3 to 6 months late | 23 Jul 2026 to 22 Oct 2026 | £750 |
| More than 6 months late | From 23 Oct 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2026 | £200 |
| 3 months late | 31 Oct 2026 | another £200 |
| 6 months late | 31 Jan 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 15852324
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 July 2024 (2 years ago)
- Registered office
- 16 Casino Court, Furtherwick Road, Canvey Island, Essex, SS8 7GJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 21 July 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Canvey Island
Other active specialist construction companies registered in Canvey Island.
- Darpez Construction Ltd2025
- Eagle Scaffolding Contracts Limited1999
- Ejm Construction Limited2014
- F & F Utilities Limited2018
- FK Utilities (Essex) Ltd2026
- Ii Create Ltd2026
- J. E. Blackholly Ltd2018
- K J Sprinklers Limited2019
All specialist construction companies in Canvey Island · All trades in Canvey Island · Specialist contractors across the UK
Frequently asked questions
When are CSK Building Works Limited's accounts due?
CSK Building Works Limited's accounts were due at Companies House on 22 April 2026 and the register shows them as overdue.
When is CSK Building Works Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 21 July 2025, due by 21 July 2026, and one for the period to 31 July 2025, due by 31 July 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is CSK Building Works Limited still trading?
CSK Building Works Limited is listed as active on the Companies House register (checked 12 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 CSK Building Works Limited do?
CSK Building Works Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is CSK Building Works Limited?
CSK Building Works Limited was incorporated on 22 July 2024, 2 years ago.
What is the penalty if CSK Building Works Limited 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 CSK Building Works Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.