- Companies
- Cleaning companies
- Southampton
- Clean & Build South Ltd
Clean & Build South Ltd
- Company number
- 11942839
- Incorporated
- 12 Apr 20197 years trading
- Registered office
- C/O Power Accountax Ltd, Mailbox 3, Solent Business Centre, 343 Millbrook Road West, Southampton, SO15 0HW
- Nature of business
- Specialised cleaning services
Clean & Build South Ltd is a 7-year-old private limited company registered in Southampton, company number 11942839, one of 274 cleaning companies in Southampton. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 down £604 (-92.8%) on the year before, to £47.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £40K against £36K owed within a year: 1.1 times cover.
- 6 employees on average, down from 8 the year before.
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £47 | £113 | £40K | £36K | 6 |
| 31 Mar 2024 | £651 | £15K | £57K | £48K | 8 |
| 31 Mar 2023 | £30K | £2,853 | £81K | £38K | 10 |
| 31 Mar 2022 | £12K | £3,113 | £81K | £51K | 12 |
| 31 Mar 2021 | £7,158 | £21K | £74K | £41K | 6 |
| 31 Mar 2020 | £20 | £4 | £5,421 | £5,429 | 1 |
Where Clean & Build South Ltd is registered
The registered office is in Southampton (SO15), in the Southampton local authority area, South East. Show SO15 0HW on a map.
Other trade companies in SO15
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- The DPF Guy LtdMechanics and garages
- Redbridge Accident Repair LtdMechanics and garages
- Mahakali Engineer Services LtdMachinery repair and installation
- Genuinecarpartsuk LtdMotor traders
- MK Cars & Parts LtdMotor traders
- SMS Building LimitedFinishing trades
- Sonridge Building Group LtdCivil engineering
Shared registered office
28 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 Clean & Build South 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11942839
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 April 2019 (7 years ago)
- Registered office
- C/O Power Accountax Ltd, Mailbox 3, Solent Business Centre, 343 Millbrook Road West, Southampton, SO15 0HW
- Nature of business
- Specialised cleaning services (SIC 81222)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 21 December 2025
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Southampton
Other active cleaning companies registered in Southampton.
- Clean Club Services Ltd2021
- Clean Club Solutions Limited2024
- Clean Freaks Group Limited2023
- Clean Peak Southampton Ltd2024
- Clean Slate Carpet Cleaning Ltd2025
- Cleanatomy Premier Cleaning Limited2025
- Cleaned Right Ltd2025
- Cleaning Fairy Ltd2026
All cleaning companies in Southampton · All trades in Southampton · Cleaning companies across the UK
Frequently asked questions
When are Clean & Build South Ltd's accounts due?
Clean & Build South Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Clean & Build South Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Clean & Build South Ltd still trading?
Clean & Build South 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 Clean & Build South Ltd do?
Clean & Build South Ltd is registered under Specialised cleaning services (SIC 81222).
How old is Clean & Build South Ltd?
Clean & Build South Ltd was incorporated on 12 April 2019, 7 years ago.
What is the penalty if Clean & Build South 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 Clean & Build South 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.