- Companies
- Builders
- Northampton
- Janko Construction Ltd
Janko Construction Ltd
- Company number
- 16019938
- Incorporated
- 15 Oct 20241 year trading
- Registered office
- 42 Nene Way, Northampton, Northamptonshire, NN5 7NG
- Nature of business
- Construction of domestic buildings
Janko Construction Ltd is a 1-year-old private limited company registered in Northampton, company number 16019938, one of 586 building contractors in Northampton. Companies House shows its accounts as overdue: they were due on 15 July 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.
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Where Janko Construction Ltd is registered
The registered office is in Northampton (NN5), in the West Northamptonshire local authority area, East Midlands. Show NN5 7NG on a map.
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What happens if Janko Construction Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Jul 2026 to 15 Aug 2026 | £150 |
| 1 to 3 months late | 16 Aug 2026 to 15 Oct 2026 | £375 |
| 3 to 6 months late | 16 Oct 2026 to 15 Jan 2027 | £750 |
| More than 6 months late | From 16 Jan 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2026 | £200 |
| 3 months late | 31 Jan 2027 | another £200 |
| 6 months late | 30 Apr 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16019938
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 October 2024 (1 year ago)
- Registered office
- 42 Nene Way, Northampton, Northamptonshire, NN5 7NG
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 14 October 2025
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 Northampton
Other active building contractors registered in Northampton.
- JC Decorating Ltd2023
- JD Construction & Civil Engineering Ltd2026
- Je Brickwork Ltd2026
- Jevtiling Services Ltd2017
- Johnclad Limited2020
- Johny Pai Ltd2015
- Josan Brickwork Ltd2024
- K and R Paving and Landscaping Ltd2020
All building contractors in Northampton · All trades in Northampton · Builders across the UK
Frequently asked questions
When are Janko Construction Ltd's accounts due?
Janko Construction Ltd's accounts were due at Companies House on 15 July 2026 and the register shows them as overdue.
When is Janko 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 14 October 2025, due by 14 October 2026, and one for the period to 31 October 2025, due by 31 October 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Janko Construction Ltd still trading?
Janko Construction Ltd 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 Janko Construction Ltd do?
Janko Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Janko Construction Ltd?
Janko Construction Ltd was incorporated on 15 October 2024, 1 year ago.
What is the penalty if Janko 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 Janko Construction Ltd 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.