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- Walstone Specialist Building Services Limited
Walstone Specialist Building Services Limited
- Company number
- 02900318
- Incorporated
- 21 Feb 199432 years trading
- Registered office
- 12A Portsmouth Road, Woolston, Southampton, Hampshire, SO19 9AA
- Nature of business
- Construction of commercial buildings
Walstone Specialist Building Services Limited is a 32-year-old private limited company registered in Southampton, company number 02900318, one of 491 building contractors in Southampton. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £11K (+3.3%) on the year before, to £357K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £416K against £137K owed within a year: 3.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £357K | £123K | £416K | £137K | 2 |
| 31 May 2024 | £346K | £68K | £404K | £79K | 2 |
| 31 May 2023 | £362K | £22K | £426K | £406K | 2 |
| 31 May 2022 | £357K | £9,602 | £403K | £32K | 2 |
| 31 May 2021 | £375K | £110K | £535K | £95K | 2 |
| 31 May 2020 | £374K | £188K | £576K | £159K | 2 |
| 31 May 2019 | £397K | £27K | £454K | £72K | 2 |
| 31 May 2018 | £394K | £49K | £541K | £172K | -3 |
| 31 May 2017 | £355K | £14K | £504K | £156K | -3 |
| 31 May 2016 | £389K | £31K | £778K | £406K |
Public contracts won
Walstone Specialist Building Services Limited has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| VIVID Housing Ltd | Retaining Wall Refurbishment Works | Ceiling, not shown | 20 Mar 2026 |
Where Walstone Specialist Building Services Limited is registered
The registered office is in Southampton (SO19), in the Southampton local authority area, South East. Show SO19 9AA on a map.
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What happens if Walstone Specialist Building Services 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 02900318
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 February 1994 (32 years ago)
- Registered office
- 12A Portsmouth Road, Woolston, Southampton, Hampshire, SO19 9AA
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 21 February 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Southampton
Other active building contractors registered in Southampton.
- Walthams South Limited2003
- Warsash Enterprises Limited2006
- White Build Ltd2025
- White World Limited2023
- Wilbec Construction Limited2023
- Yardley Homes Ltd2021
- Yeargate Limited1983
- Zac Renovations Ltd2026
All building contractors in Southampton · All trades in Southampton · Builders across the UK
Frequently asked questions
When are Walstone Specialist Building Services Limited's accounts due?
Walstone Specialist Building Services Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Walstone Specialist Building Services Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Walstone Specialist Building Services Limited still trading?
Walstone Specialist Building Services 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 Walstone Specialist Building Services Limited do?
Walstone Specialist Building Services Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Walstone Specialist Building Services Limited?
Walstone Specialist Building Services Limited was incorporated on 21 February 1994, 32 years ago.
Has Walstone Specialist Building Services Limited won public sector contracts?
Yes. Walstone Specialist Building Services Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from VIVID Housing Ltd.
What is the penalty if Walstone Specialist Building Services 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 Walstone Specialist Building Services 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.