- Companies
- Installers
- Northampton
- SJ Construction Northampton Ltd
SJ Construction Northampton Ltd
- Company number
- 15618695
- Incorporated
- 5 Apr 20242 years trading
- Registered office
- 36 Wellingborough Road, Mears Ashby, Northampton, NN6 0DZ
- Nature of business
- Other construction installation
SJ Construction Northampton Ltd is a 2-year-old private limited company registered in Northampton, company number 15618695, one of 122 installation companies (insulation, lifts, shutters and similar) in Northampton. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 April 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Who runs and owns SJ Construction Northampton Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** A*** | Director | Apr 2024 |
Person with significant control
Charges (secured borrowing)
1 of 1 registered charge is outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Charter Court Financial Services Limited Trading As Precise Mortgages | Outstanding | Jun 2024 |
Where SJ Construction Northampton Ltd is registered
The registered office is in Northampton (NN6), in the North Northamptonshire local authority area, East Midlands. Show NN6 0DZ on a map.
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What happens if SJ Construction Northampton 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 15618695
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 April 2024 (2 years ago)
- Registered office
- 36 Wellingborough Road, Mears Ashby, Northampton, NN6 0DZ
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 4 April 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Northampton
Other active installation companies (insulation, lifts, shutters and similar) registered in Northampton.
- Smart Conservatory Solutions Ltd2015
- Smashgard Window Films Ltd2018
- Sostac & Co Facades Ltd2021
- Space Etcetera Ltd2025
- Spicer Installations Limited2006
- Stonehayes Bricklayers Ltd2025
- Storm Solutions Ltd2022
- Symmetry Builds Limited2010
All installation companies (insulation, lifts, shutters and similar) in Northampton · All trades in Northampton · Installers across the UK
Frequently asked questions
When are SJ Construction Northampton Ltd's accounts due?
SJ Construction Northampton Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is SJ Construction Northampton Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is SJ Construction Northampton Ltd still trading?
SJ Construction Northampton 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 SJ Construction Northampton Ltd do?
SJ Construction Northampton Ltd is registered under Other construction installation (SIC 43290).
How old is SJ Construction Northampton Ltd?
SJ Construction Northampton Ltd was incorporated on 5 April 2024, 2 years ago.
Who runs SJ Construction Northampton Ltd?
SJ Construction Northampton Ltd has 1 active director, the longest-serving appointed in Apr 2024. Their names and service addresses are on the Companies House register.
Who owns SJ Construction Northampton Ltd?
One person or company has significant control of SJ Construction Northampton Ltd: an individual (owns 75% or more of the shares).
What is the penalty if SJ Construction Northampton 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 SJ Construction Northampton 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.