- Companies
- Specialist contractors
- Doncaster
- Mas Construction & Maintenance Ltd
Mas Construction & Maintenance Ltd
- Company number
- 07865557
- Incorporated
- 30 Nov 201114 years trading
- Registered office
- Room 3, 11, Carlton Road, Doncaster, DN1 2TS
- Nature of business
- Other specialised construction activities n.e.c.
Mas Construction & Maintenance Ltd is a 14-year-old private limited company registered in Doncaster, company number 07865557, one of 187 specialist construction companies in Doncaster. 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 down £4,237 (-23.1%) on the year before, to £14K.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £17K against £2,529 owed within a year: 6.7 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £14K | £17K | £2,529 | 1 | |
| 30 Nov 2024 | £18K | £20K | £1,527 | 1 | |
| 30 Nov 2023 | £22K | £23K | £0 | 1 | |
| 30 Nov 2022 | £30K | £32K | 1 | ||
| 30 Nov 2021 | £24K | £27K | £2,954 | 1 | |
| 30 Nov 2020 | £13K | £16K | £2,663 | 1 | |
| 30 Nov 2019 | £4,590 | £3,546 | £5,757 | £1,902 | 1 |
| 30 Nov 2018 | -£1,619 | £948 | £948 | £4,032 | |
| 30 Nov 2017 | £2,879 | £3,231 | £4,431 | £3,747 |
Where Mas Construction & Maintenance Ltd is registered
The registered office is in Doncaster (DN1), in the Doncaster local authority area, Yorkshire and The Humber. Show DN1 2TS on a map.
Other trade companies in DN1
- Nacu Trans LtdMechanics and garages
- Highwind Developments LimitedFinishing trades
- Adzare Service LtdMechanics and garages
- Sukaj Construction LtdPlasterers
- Tobityres LimitedMechanics and garages
- Firmont Homes LtdBuilders
- Callerton Autos LtdMotor traders
- S & A Motor Vehicles LimitedMotor traders
What happens if Mas Construction & Maintenance 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 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
- 07865557
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 November 2011 (14 years ago)
- Registered office
- Room 3, 11, Carlton Road, Doncaster, DN1 2TS
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 10 November 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 Doncaster
Other active specialist construction companies registered in Doncaster.
- MD Examinations Ltd2017
- Mecycle Ltd2024
- Merlin Excavations Limited2003
- MF Cladding Ltd2022
- Natural Pools Limited2008
- Nice One TM Ltd2015
- Nieuwerkerk Ltd2019
- NJH Estimating Services Limited2013
All specialist construction companies in Doncaster · All trades in Doncaster · Specialist contractors across the UK
Frequently asked questions
When are Mas Construction & Maintenance Ltd's accounts due?
Mas Construction & Maintenance Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Mas Construction & Maintenance Ltd'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 Mas Construction & Maintenance Ltd still trading?
Mas Construction & Maintenance 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 Mas Construction & Maintenance Ltd do?
Mas Construction & Maintenance Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mas Construction & Maintenance Ltd?
Mas Construction & Maintenance Ltd was incorporated on 30 November 2011, 14 years ago.
What is the penalty if Mas Construction & Maintenance 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 Mas Construction & Maintenance 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.