- Companies
- Installers
- Portsmouth
- Da Construction Southern Limited
Da Construction Southern Limited
- Company number
- 12310496
- Incorporated
- 12 Nov 20196 years trading
- Registered office
- 8 Spur Road, Cosham, Portsmouth, Hampshire, PO6 3EB
- Nature of business
- Other construction installation; Other building completion and finishing
Da Construction Southern Limited is a 6-year-old private limited company registered in Portsmouth, company number 12310496, one of 84 installation companies (insulation, lifts, shutters and similar) in Portsmouth. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £4,908 on the year before, to £5,013.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £2,814 against £6,265 owed within a year: 0.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £5,013 | £2,814 | £6,265 | 2 | |
| 30 Nov 2024 | £105 | £1,207 | £4,823 | 2 | |
| 30 Nov 2023 | £857 | £2,780 | £3,534 | 2 | |
| 30 Nov 2022 | £3,604 | £7,124 | £9,828 | 2 | |
| 30 Nov 2021 | £324 | £482 | £11K | 2 | |
| 30 Nov 2020 | -£132 | £2,095 | £15K | 1 |
Where Da Construction Southern Limited is registered
The registered office is in Portsmouth (PO6), in the Portsmouth local authority area, South East. Show PO6 3EB on a map.
Other trade companies in PO6
- Bellagio Partners LtdBuilders
- Cpenw LtdMachinery repair and installation
- Marla Brickwork & Construction LtdProperty developers
- Miracles in Metal LtdMechanics and garages
- FH Fire & Electrical LtdElectricians
- Thomcore LimitedSpecialist contractors
- JMS Southern LtdElectricians
- The Motum Group LtdSpecialist contractors
Shared registered office
142 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Da Construction Southern Limited 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 12310496
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 November 2019 (6 years ago)
- Registered office
- 8 Spur Road, Cosham, Portsmouth, Hampshire, PO6 3EB
- Nature of business
- Other construction installation (SIC 43290)
Other building completion and finishing (SIC 43390) - Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 11 November 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.
- Danilcom Construction Ltd2025
- Days Window & Door Services Limited2001
- Doors and Glass Limited2008
- Dreamrooms (Southern) Limited2023
- Dynamic Developments Holdings Ltd2026
- Easigrass Hampshire Ltd2024
- Estell Brown Ltd2024
- GSC Facilities Ltd2022
All installation companies (insulation, lifts, shutters and similar) in Portsmouth · All trades in Portsmouth · Installers across the UK
Frequently asked questions
When are Da Construction Southern Limited's accounts due?
Da Construction Southern Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Da Construction Southern Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Da Construction Southern Limited still trading?
Da Construction Southern Limited 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 Da Construction Southern Limited do?
Da Construction Southern Limited is registered under Other construction installation (SIC 43290); Other building completion and finishing (SIC 43390).
How old is Da Construction Southern Limited?
Da Construction Southern Limited was incorporated on 12 November 2019, 6 years ago.
What is the penalty if Da Construction Southern 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 Da Construction Southern Limited 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.