- Companies
- Property developers
- Mullin & Sons Limited
Mullin & Sons Limited
- Company number
- 01796521
- Incorporated
- 1 Mar 198442 years trading
- Registered office
- 156A South Ealing Road, London, W5 4QL
- Nature of business
- Development of building projects; Construction of commercial buildings; Construction of domestic buildings
Mullin & Sons Limited is a 42-year-old private limited company, company number 01796521, one of the UK's property development companies. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Public contracts won
Mullin & Sons Limited has one public sector contract award on record (2023). 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. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Harrow Council | Aids and Adaptations | Ceiling, not shown | 11 Aug 2023 |
Where Mullin & Sons Limited is registered
The registered office is in the W5 postcode district, in the Ealing local authority area, London. Show W5 4QL on a map.
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What happens if Mullin & Sons 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 01796521
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 March 1984 (42 years ago)
- Registered office
- 156A South Ealing Road, London, W5 4QL
- Nature of business
- Development of building projects (SIC 41100)
Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 10 September 2026
- Charges (mortgages)
- 1 outstanding of 7 registered
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies
Other active property development companies.
Frequently asked questions
When are Mullin & Sons Limited's accounts due?
Mullin & Sons Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Mullin & Sons Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Mullin & Sons Limited still trading?
Mullin & Sons 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 Mullin & Sons Limited do?
Mullin & Sons Limited is registered under Development of building projects (SIC 41100); Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Mullin & Sons Limited?
Mullin & Sons Limited was incorporated on 1 March 1984, 42 years ago.
Has Mullin & Sons Limited won public sector contracts?
Yes. Mullin & Sons Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Harrow Council.
What is the penalty if Mullin & Sons 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 Mullin & Sons 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.