- Company number
- 13156842
- Incorporated
- 25 Jan 20215 years trading
- Registered office
- 47 the Gossamers, Watford, WD25 9AW
- Nature of business
- Construction of domestic buildings
Leo Cosmin Constructions Limited is a 5-year-old private limited company registered in Watford, company number 13156842, one of 365 building contractors in Watford. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £183K (+242.8%) on the year before, to £259K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £304K against £70K owed within a year: 4.3 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £259K | £304K | £70K | 1 | |
| 31 Jan 2024 | £76K | 2 | |||
| 31 Jan 2023 | £51K | 4 | |||
| 31 Jan 2022 | £1 | 1 |
Where Leo Cosmin Constructions Limited is registered
The registered office is in Watford (WD25), in the Watford local authority area, East of England. Show WD25 9AW on a map.
Other trade companies in WD25
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- Jpjcm LimitedFinishing trades
- Mix & Go LtdSpecialist contractors
- Colney Prestige Autos LtdMotor traders
- Prestige Garden Services LtdLandscapers and gardeners
- Destinyd LtdMachinery repair and installation
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Also registered at this address
1 other company uses the same registered office as Leo Cosmin Constructions Limited.
- Leo Marian Construct LtdBuilders
What happens if Leo Cosmin Constructions 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 13156842
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 January 2021 (5 years ago)
- Registered office
- 47 the Gossamers, Watford, WD25 9AW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 11 January 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Watford
Other active building contractors registered in Watford.
- Leo Marian Construct Ltd2025
- Leor Construction Services Limited2024
- Levy Construct Ltd2019
- LLS Building Limited2026
- LMC20 Limited2026
- London Appliances Ltd2021
- London Watford Ltd2025
- M & J Trans Ltd2013
All building contractors in Watford · All trades in Watford · Builders across the UK
Frequently asked questions
When are Leo Cosmin Constructions Limited's accounts due?
Leo Cosmin Constructions Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Leo Cosmin Constructions Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Leo Cosmin Constructions Limited still trading?
Leo Cosmin Constructions 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 Leo Cosmin Constructions Limited do?
Leo Cosmin Constructions Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Leo Cosmin Constructions Limited?
Leo Cosmin Constructions Limited was incorporated on 25 January 2021, 5 years ago.
What is the penalty if Leo Cosmin Constructions 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 Leo Cosmin Constructions 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.