- Companies
- Property developers
- Barnet
- Monaghan Martin Limited
Monaghan Martin Limited
- Company number
- 12369599
- Incorporated
- 18 Dec 20196 years trading
- Registered office
- Suite 4A Galley House, Moon Lane, Barnet, Herts., EN5 5YL
- Nature of business
- Development of building projects; Construction of domestic buildings
Monaghan Martin Limited is a 6-year-old private limited company registered in Barnet, company number 12369599, one of 220 property development companies in Barnet. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £153K (+61.1%) on the year before, to £404K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- 8 employees on average, down from 9 the year before.
- Balance sheets on record for 6 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £404K | £878K | £1M | 8 | |
| 31 Mar 2025 | £251K | £362K | 9 | ||
| 31 Mar 2024 | £293K | £352K | £347K | 9 | |
| 31 Mar 2023 | £423K | £255K | 7 | ||
| 31 Mar 2022 | £206K | £473K | £387K | 6 | |
| 31 Mar 2021 | £102K | £249K | 3 |
Where Monaghan Martin Limited is registered
The registered office is in Barnet (EN5), in the Barnet local authority area, London. Show EN5 5YL on a map.
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What happens if Monaghan Martin 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 12369599
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 December 2019 (6 years ago)
- Registered office
- Suite 4A Galley House, Moon Lane, Barnet, Herts., EN5 5YL
- Nature of business
- Development of building projects (SIC 41100)
Construction of domestic buildings (SIC 41202) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 17 December 2025
- Charges (mortgages)
- 2 outstanding of 2 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 in Barnet
Other active property development companies registered in Barnet.
- Nadlan One Limited2016
- Nata Lee Ltd2004
- Nerja Holdings Limited2016
- Next Level Construction & Carpentry Paso Limited2020
- Northampton Commercial Limited2019
- Oakwell Building Services Limited1996
- Oesterreicher Limited2022
- Okr Developments (London) Ltd2026
All property development companies in Barnet · All trades in Barnet · Property developers across the UK
Frequently asked questions
When are Monaghan Martin Limited's accounts due?
Monaghan Martin Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Monaghan Martin Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Monaghan Martin Limited still trading?
Monaghan Martin 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 Monaghan Martin Limited do?
Monaghan Martin Limited is registered under Development of building projects (SIC 41100); Construction of domestic buildings (SIC 41202).
How old is Monaghan Martin Limited?
Monaghan Martin Limited was incorporated on 18 December 2019, 6 years ago.
What is the penalty if Monaghan Martin 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 Monaghan Martin 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.