- Companies
- Specialist contractors
- West Horndon
- Mas Son Construction Limited
Mas Son Construction Limited
- Company number
- 10881170
- Incorporated
- 24 Jul 20179 years trading
- Registered office
- 5A Systems House, Horndon Industrial Estate, West Horndon, Essex, CM13 3XL
- Nature of business
- Other specialised construction activities n.e.c.
Mas Son Construction Limited is a 9-year-old private limited company registered in West Horndon, company number 10881170, one of 22 specialist construction companies in West Horndon. 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 £100K (-20.1%) on the year before, to £397K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £1.6M against £1.2M owed within a year: 1.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £397K | £246K | £1.6M | £1.2M | 0 |
| 31 Mar 2024 | £497K | £378K | £793K | £300K | 2 |
| 31 Mar 2023 | £485K | £326K | £756K | £236K | 2 |
| 31 Jul 2022 | £293K | £155K | £415K | £77K | 2 |
| 31 Jul 2021 | £80K | £125K | £256K | £126K | 1 |
| 31 Jul 2020 | -£35K | £24K | £8,623 | 1 | |
| 31 Jul 2019 | £1 | £1 | |||
| 31 Jul 2018 | £1 |
Who runs and owns Mas Son Construction Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| D*** S*** | Director | Jul 2017 |
People with significant control (2)
Where Mas Son Construction Limited is registered
The registered office is in West Horndon (CM13), in the Brentwood local authority area, East of England. Show CM13 3XL on a map.
Other trade companies in CM13
- Van & Car Self Drive LtdMotor traders
- Marsh Harrier Developments LtdProperty developers
- Motor Dealer Sales LtdMotor traders
- Electrical PN LtdElectricians
- Torrtec LtdPlumbers and heating engineers
- Flushed Through Drainage Services LtdPlumbers and heating engineers
- RJFD Electrical LtdCivil engineering
- Welsted LtdJoiners and carpenters
What happens if Mas Son Construction 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 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
- 10881170
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 July 2017 (9 years ago)
- Registered office
- 5A Systems House, Horndon Industrial Estate, West Horndon, Essex, CM13 3XL
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 23 July 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in West Horndon
Other active specialist construction companies registered in West Horndon.
- Mellimax Construct Ltd2026
- MSC South Ltd2026
- Original Brick Pointing Ltd2026
- Pritchard Interiors Ltd2026
- Romford Lofts Limited2021
- Ropetech (London) Limited2009
- Smart Choice Contracts (UK) Ltd2025
- Stagehand Services Ltd2023
All specialist construction companies in West Horndon · All trades in West Horndon · Specialist contractors across the UK
Frequently asked questions
When are Mas Son Construction Limited's accounts due?
Mas Son Construction Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Mas Son Construction Limited'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 Mas Son Construction Limited still trading?
Mas Son Construction Limited 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 Mas Son Construction Limited do?
Mas Son Construction Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mas Son Construction Limited?
Mas Son Construction Limited was incorporated on 24 July 2017, 9 years ago.
Who runs Mas Son Construction Limited?
Mas Son Construction Limited has 1 active director, the longest-serving appointed in Jul 2017. Their names and service addresses are on the Companies House register.
Who owns Mas Son Construction Limited?
2 people or companies have significant control of Mas Son Construction Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Mas Son Construction 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 Mas Son Construction Limited 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.