- Companies
- Installers
- Portsmouth
- CJS Construction Services Ltd
CJS Construction Services Ltd
- Company number
- 14989251
- Incorporated
- 7 Jul 20233 years trading
- Registered office
- 1 Lower Brookfield Road, Portsmouth, PO1 5HY
- Nature of business
- Other construction installation
CJS Construction Services Ltd is a 3-year-old private limited company registered in Portsmouth, company number 14989251, one of 84 installation companies (insulation, lifts, shutters and similar) in Portsmouth. Companies House shows its accounts as overdue: they were due on 30 April 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where CJS Construction Services Ltd is registered
The registered office is in Portsmouth (PO1), in the Portsmouth local authority area, South East. Show PO1 5HY on a map.
Other trade companies in PO1
- Design 1805 Southern LtdJoiners and carpenters
- Portsmouth Roofing LtdRoofers
- Peterborough Mews (London) LimitedProperty developers
- Doxa Facility Group LtdCleaning companies
- Crestpoint Cleaning & Facilities LtdCleaning companies
- Dark Rose Cleaning Co LtdCleaning companies
- PDS Garage Services LtdMechanics and garages
- HDF Roofing LtdRoofers
What happens if CJS Construction Services Ltd 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 | 1 May 2026 to 31 May 2026 | £150 |
| 1 to 3 months late | 1 Jun 2026 to 31 Jul 2026 | £375 |
| 3 to 6 months late | 1 Aug 2026 to 31 Oct 2026 | £750 |
| More than 6 months late | From 1 Nov 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
- 14989251
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 July 2023 (3 years ago)
- Registered office
- 1 Lower Brookfield Road, Portsmouth, PO1 5HY
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 2 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2024
- Last confirmation statement
- 17 July 2026
- Previous names
- CJS Home Improvements Ltd (until 17 Oct 2025)
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 Portsmouth
Other active installation companies (insulation, lifts, shutters and similar) registered in Portsmouth.
- Coles Construction Ltd2026
- Commercial Building Solutions Limited2013
- Cowltech Woodburners Ltd2025
- Crossway Insulation Ltd2010
- D and L Southern Ltd2018
- D Eyre Brickwork Ltd2016
- D&H Brickwork Ltd2023
- D2I Property Maintenance Limited2009
All installation companies (insulation, lifts, shutters and similar) in Portsmouth · All trades in Portsmouth · Installers across the UK
Frequently asked questions
When are CJS Construction Services Ltd's accounts due?
CJS Construction Services Ltd's accounts were due at Companies House on 30 April 2026 and the register shows them as overdue.
When is CJS Construction Services Ltd's CT600 due?
The CT600 for the period to 31 July 2025 is due at HMRC by 31 July 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2026.
Is CJS Construction Services Ltd still trading?
CJS Construction Services 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 CJS Construction Services Ltd do?
CJS Construction Services Ltd is registered under Other construction installation (SIC 43290).
How old is CJS Construction Services Ltd?
CJS Construction Services Ltd was incorporated on 7 July 2023, 3 years ago.
What is the penalty if CJS Construction Services 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 CJS Construction Services 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.