- Companies
- Specialist contractors
- Westcliff-on-Sea
- Onj Construction Management Ltd
Onj Construction Management Ltd
- Company number
- 15937043
- Incorporated
- 4 Sep 20242 years trading
- Registered office
- 3 Denton Close, Westcliff-on-Sea, SS0 0LB
- Nature of business
- Other specialised construction activities n.e.c.
Onj Construction Management Ltd is a 2-year-old private limited company registered in Westcliff-on-Sea, company number 15937043, one of 10 specialist construction companies in Westcliff-on-Sea. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Where Onj Construction Management Ltd is registered
The registered office is in Westcliff-on-Sea (SS0), in the Southend-on-Sea local authority area, East of England. Show SS0 0LB on a map.
Other trade companies in SS0
- B&P Property Holdings LimitedBuilders
- Stan Electrical LtdElectricians
- DJJ Consulting LimitedCleaning companies
- Nadree Builders LtdBuilders
- Estuary Groundworks LimitedBuilders
- Thake Property Group LtdFinishing trades
- Anuk LtdBuilders
- Nela Roxana Ciurea LtdCleaning companies
What happens if Onj Construction Management 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £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
- 15937043
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 September 2024 (2 years ago)
- Registered office
- 3 Denton Close, Westcliff-on-Sea, SS0 0LB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 2 September 2026
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 Westcliff-on-Sea
Other active specialist construction companies registered in Westcliff-on-Sea.
- Pajodab Limited2007
- Pro Services Essex Ltd2025
- TCSH Services Ltd2025
- Frame Forge Structures Limited2025
- JSD Firerack Limited2015
- Lawless Construction Ltd2022
- LJ Construction Essex Limited2021
- MPD Constructs Ltd2026
All specialist construction companies in Westcliff-on-Sea · All trades in Westcliff-on-Sea · Specialist contractors across the UK
Frequently asked questions
When are Onj Construction Management Ltd's accounts due?
Onj Construction Management Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Onj Construction Management Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Onj Construction Management Ltd still trading?
Onj Construction Management 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 Onj Construction Management Ltd do?
Onj Construction Management Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Onj Construction Management Ltd?
Onj Construction Management Ltd was incorporated on 4 September 2024, 2 years ago.
What is the penalty if Onj Construction Management 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 Onj Construction Management 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.