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- Mullan Construction Limited
Company profile · Builders
Mullan Construction Limited
Mullan Construction Limited is a 42-year-old private limited company registered in Potters Bar, company number 01797049, one of 84 building contractors in Potters Bar. Its next accounts are due at Companies House on 29 October 2026, and its first CT600 is due at HMRC on 29 October 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2024
From the balance sheet at 29 October 2024, as filed at Companies House.
Mullan Construction Limited over the years
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 £5,195 (-1.6%) on the year before, to £319K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 29 Oct 2024 | £319K | £6,513 | £26K | 1 | |
| 29 Oct 2023 | £324K | £6,406 | £21K | 1 | |
| 29 Oct 2022 | £330K | £6,406 | £15K | 0 | |
| 29 Oct 2021 | £305K | £79K | 0 | ||
| 29 Oct 2020 | £303K | £0 | £80K | 0 | |
| 29 Oct 2019 | £242K | £1,352 | £119K | 0 | |
| 29 Oct 2018 | £239K | £1,352 | £144K | ||
| 29 Oct 2017 | £267K | £1,352 | £106K | ||
| 30 Oct 2016 | £274K | £1,352 | £1,352 | £116K | |
| 31 Oct 2015 | £274K | £1,352 | £92K | £220K |
Where Mullan Construction Limited is registered
The registered office is in Potters Bar (EN6), in the Hertsmere local authority area, East of England. Show EN6 5AS on a map.
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- Avanti Airtech LimitedPlumbers and heating engineers
- Azmaj Group LtdFinishing trades
- Burbridge Roofing and Build LtdBuilders
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- Westshire Property Services LimitedFinishing trades
- Oska Auto LtdMechanics and garages
What happens if Mullan 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 29 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Oct 2026 to 29 Nov 2026 | £150 |
| 1 to 3 months late | 30 Nov 2026 to 29 Jan 2027 | £375 |
| 3 to 6 months late | 30 Jan 2027 to 29 Apr 2027 | £750 |
| More than 6 months late | From 30 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jan 2027 | £200 |
| 3 months late | 29 Apr 2027 | another £200 |
| 6 months late | 29 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jan 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
- 01797049
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 March 1984 (42 years ago)
- Registered office
- Michael Filiou Ltd Salisbury House, 81 High Street, Potters Bar, Hertfordshire, EN6 5AS
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 29 October (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 29 October 2024
- Last confirmation statement
- 12 October 2025
- Charges (mortgages)
- 1 outstanding of 16 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 Potters Bar
Other active building contractors registered in Potters Bar.
- New Tech Homes Ltd2020
- Newland Bros (Construction) Limited1971
- Newspec Build Ltd2026
- Nucore Construction Ltd2018
- Nucore Construction Services Limited2021
- Nucore Developments Limited2025
- O T Construction Ltd2012
- Oakwood Developers Limited2022
All building contractors in Potters Bar · All trades in Potters Bar · Builders across the UK
Frequently asked questions
When are Mullan Construction Limited's accounts due?
Mullan Construction Limited's next accounts are due at Companies House by 29 October 2026 (in 17 days), covering the period to 29 January 2026.
When is Mullan Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 29 October 2025, due by 29 October 2026, and one for the period to 29 January 2026, due by 29 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mullan Construction Limited still trading?
Mullan Construction 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 Mullan Construction Limited do?
Mullan Construction Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Mullan Construction Limited?
Mullan Construction Limited was incorporated on 5 March 1984, 42 years ago.
What is the penalty if Mullan 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 Mullan Construction 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.