- Companies
- Builders
- Portsmouth
- Adson Construction Ltd
Adson Construction Ltd
- Company number
- 13675381
- Incorporated
- 12 Oct 20215 years trading
- Registered office
- Unit 6, Airport Service Road, Portsmouth, PO3 5NU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other construction installation
Adson Construction Ltd is a 5-year-old private limited company registered in Portsmouth, company number 13675381, one of 175 building contractors in Portsmouth. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £38K (+22.5%) on the year before, to £204K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £538K against £316K owed within a year: 1.7 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £204K | £479K | £538K | £316K | 2 |
| 31 Aug 2024 | £167K | £69K | £371K | £200K | 1 |
| 31 Aug 2023 | £161K | £150K | £283K | £80K | 1 |
| 31 Aug 2022 | £98K | £95K | £136K | £39K | 0 |
Where Adson Construction Ltd is registered
The registered office is in Portsmouth (PO3), in the Portsmouth local authority area, South East. Show PO3 5NU on a map.
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What happens if Adson Construction 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 13675381
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 October 2021 (5 years ago)
- Registered office
- Unit 6, Airport Service Road, Portsmouth, PO3 5NU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other construction installation (SIC 43290) - Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 11 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 Portsmouth
Other active building contractors registered in Portsmouth.
- Aitkins Interior Specialist Ltd2018
- Ajito Property Limited2025
- All Scope Construction Limited2025
- Andromeda Carpentry and Building Services Limited2004
- Arland Developments Limited2026
- Athena South Ltd2024
- Atlas Construction & Design Ltd2025
- Aztec Elite Construction Ltd2024
All building contractors in Portsmouth · All trades in Portsmouth · Builders across the UK
Frequently asked questions
When are Adson Construction Ltd's accounts due?
Adson Construction Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Adson Construction Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Adson Construction Ltd still trading?
Adson Construction 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 Adson Construction Ltd do?
Adson Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other construction installation (SIC 43290).
How old is Adson Construction Ltd?
Adson Construction Ltd was incorporated on 12 October 2021, 5 years ago.
What is the penalty if Adson 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 Adson Construction 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.