- Companies
- Finishing trades
- London
- Mulcahy Construction Limited
Mulcahy Construction Limited
- Company number
- 11550985
- Incorporated
- 4 Sep 20188 years trading
- Registered office
- 144 Lymington Avenue, London, N22 6JG
- Nature of business
- Other building completion and finishing
Mulcahy Construction Limited is a 8-year-old private limited company registered in London, company number 11550985, one of 3,947 building finishing companies in London. Companies House shows its accounts as overdue: they were due on 30 June 2026.
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 up £29K (+145.8%) on the year before, to £50K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £54K against £33K owed within a year: 1.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2024 | £50K | £32K | £54K | £33K | 1 |
| 30 Sep 2023 | £20K | £20K | £4,844 | 1 | |
| 30 Sep 2022 | £25K | £25K | £25K | £7,811 | 1 |
| 30 Sep 2021 | £72K | £81K | £81K | £20K | 1 |
| 30 Sep 2020 | £69K | £74K | £88K | £32K | 1 |
| 30 Sep 2019 | £48K | £33K | £55K | £7,348 |
Where Mulcahy Construction Limited is registered
The registered office is in London (N22), in the Haringey local authority area, London. Show N22 6JG on a map.
Other trade companies in N22
- Don Baker's Maintenance LtdFinishing trades
- Vale UK Homes LtdPainters and decorators
- Tradepeople LtdGroundworks and demolition
- Cool As A Cucumber LtdProperty developers
- Begkolli LtdInstallers
- Zeematics Market LtdPainters and decorators
- Heat Edge LtdPlumbers and heating engineers
- Integrity Contractor LtdBuilders
Also registered at this address
5 other companies use the same registered office as Mulcahy Construction Limited.
- D L H Construction Services LimitedSpecialist contractors
- Emmay Construction (London) LimitedBuilders
- N D Decorators LimitedPainters and decorators
- N. P. Building Consultants LimitedCivil engineering
- Oxmount LtdBuilders
What happens if Mulcahy Construction Limited files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2026 to 31 Jul 2026 | £150 |
| 1 to 3 months late | 1 Aug 2026 to 30 Sep 2026 | £375 |
| 3 to 6 months late | 1 Oct 2026 to 31 Dec 2026 | £750 |
| More than 6 months late | From 1 Jan 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2026 | £200 |
| 3 months late | 30 Dec 2026 | another £200 |
| 6 months late | 30 Mar 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2027 | 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
- 11550985
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 September 2018 (8 years ago)
- Registered office
- 144 Lymington Avenue, London, N22 6JG
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2024
- Last confirmation statement
- 3 September 2025
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- Mullins Construction Ltd2016
- Multani Modern Construction Ltd2025
- Multibiz Industries Ltd2025
- Multifinish Limited2026
- Multiskilled Handyman Company Ltd2026
- Murati Construction Ltd2020
- Murphy’S Saw Ltd2019
- Mus Maintenance Services Ltd2026
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Mulcahy Construction Limited's accounts due?
Mulcahy Construction Limited's accounts were due at Companies House on 30 June 2026 and the register shows them as overdue.
When is Mulcahy Construction Limited's CT600 due?
The CT600 for the period to 30 September 2025 is due at HMRC by 30 September 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2026.
Is Mulcahy Construction Limited still trading?
Mulcahy 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 Mulcahy Construction Limited do?
Mulcahy Construction Limited is registered under Other building completion and finishing (SIC 43390).
How old is Mulcahy Construction Limited?
Mulcahy Construction Limited was incorporated on 4 September 2018, 8 years ago.
What is the penalty if Mulcahy 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 Mulcahy 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.