- Companies
- Property developers
- Watford
- MMMX1 Developments Ltd
MMMX1 Developments Ltd
- Company number
- 16477501
- Incorporated
- 27 May 20251 year trading
- Registered office
- Unit 2 Leavesden Lodge 1A Leavesden Road, Prohal, Watford, WD24 5FR
- Nature of business
- Development of building projects; Construction of commercial buildings; Buying and selling of own real estate; Other letting and operating of own or leased real estate
MMMX1 Developments Ltd is a 1-year-old private limited company registered in Watford, company number 16477501, one of 277 property development companies in Watford. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 December 2025, as filed at Companies House.
Where MMMX1 Developments Ltd is registered
The registered office is in Watford (WD24), in the Watford local authority area, East of England. Show WD24 5FR on a map.
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- DRR Builders LtdBuilders
- Redmarsh Trade LimitedMotor traders
- Herts Trading LtdMotor traders
- Coversure Roofing & Building LtdRoofers
- LLS Building LimitedBuilders
- Snagsense LtdSpecialist contractors
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Also registered at this address
6 other companies use the same registered office as MMMX1 Developments Ltd.
- As London Construction LtdCivil engineering
- Autobase Holdings LimitedMotor traders
- Autobase Repair Hub LtdMechanics and garages
- Imperium Developers LtdProperty developers
- MMMX1 Investments LtdProperty developers
- Triple Vision Investments LtdProperty developers
What happens if MMMX1 Developments Ltd 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16477501
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 May 2025 (1 year ago)
- Registered office
- Unit 2 Leavesden Lodge 1A Leavesden Road, Prohal, Watford, WD24 5FR
- Nature of business
- Development of building projects (SIC 41100)
Construction of commercial buildings (SIC 41201)
Buying and selling of own real estate (SIC 68100)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 20 May 2026
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 Watford
Other active property development companies registered in Watford.
- MMMX1 Investments Ltd2025
- Mofa Developments Ltd2025
- Monterra Group Ltd2025
- N.W.N. Developments Limited1999
- Narrd Ltd2020
- Nearart Homes Investments Limited1995
- Nebs Property Services Ltd2019
- New Agenda (London) Limited2004
All property development companies in Watford · All trades in Watford · Property developers across the UK
Frequently asked questions
When are MMMX1 Developments Ltd's accounts due?
MMMX1 Developments Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is MMMX1 Developments Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is MMMX1 Developments Ltd still trading?
MMMX1 Developments Ltd 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 MMMX1 Developments Ltd do?
MMMX1 Developments Ltd is registered under Development of building projects (SIC 41100); Construction of commercial buildings (SIC 41201); Buying and selling of own real estate (SIC 68100); Other letting and operating of own or leased real estate (SIC 68209).
How old is MMMX1 Developments Ltd?
MMMX1 Developments Ltd was incorporated on 27 May 2025, 1 year ago.
What is the penalty if MMMX1 Developments Ltd 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 MMMX1 Developments Ltd 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.