- Companies
- Property developers
- London
- Mono Properties Limited
Mono Properties Limited
- Company number
- 03707018
- Incorporated
- 3 Feb 199927 years trading
- Registered office
- 1 Kings Avenue, London, N21 3NA
- Nature of business
- Development of building projects
Mono Properties Limited is a 27-year-old private limited company registered in London, company number 03707018, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 up £210K (+2.6%) on the year before, to £8.3M.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £4.9M against £503K owed within a year: 9.8 times cover.
- 3 employees on average, up from -3 the year before.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £8.3M | £766K | £4.9M | £503K | 3 |
| 31 Aug 2024 | £8.1M | £938K | £4.7M | £462K | -3 |
| 31 Aug 2023 | £8.2M | £1M | £4.2M | £354K | 3 |
| 31 Aug 2022 | £7.8M | £834K | £3.7M | £408K | 3 |
| 31 Aug 2021 | £8M | £751K | £3.8M | £269K | 3 |
| 31 Aug 2020 | £7.8M | £733K | £3.8M | £198K | 3 |
| 31 Aug 2019 | £7.8M | £833K | £4.1M | £280K | 3 |
Where Mono Properties Limited is registered
The registered office is in London (N21), in the Enfield local authority area, London. Show N21 3NA on a map.
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Shared registered office
180 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Mono Properties 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 03707018
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 February 1999 (27 years ago)
- Registered office
- 1 Kings Avenue, London, N21 3NA
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 3 February 2026
- Charges (mortgages)
- 10 outstanding of 21 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 London
Other active property development companies registered in London.
- Monolith Building Limited2003
- Monomict Limited2025
- Monomind Limited1999
- Monop Limited2002
- Monopoly Housing Group Ltd2023
- Monserat Properties Limited2000
- Monseray Homes Limited1999
- Montagu Commercial Limited2014
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Mono Properties Limited's accounts due?
Mono Properties Limited's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Mono Properties Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Mono Properties Limited still trading?
Mono Properties 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 Mono Properties Limited do?
Mono Properties Limited is registered under Development of building projects (SIC 41100).
How old is Mono Properties Limited?
Mono Properties Limited was incorporated on 3 February 1999, 27 years ago.
What is the penalty if Mono Properties 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 Mono Properties 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.