- Companies
- Finishing trades
- London
- Mario Build Ltd
Mario Build Ltd
- Company number
- 10957605
- Incorporated
- 12 Sep 20179 years trading
- Registered office
- 145 Randall Avenue, London, NW2 7TA
- Nature of business
- Other building completion and finishing; Other service activities n.e.c.
Mario Build Ltd is a 9-year-old private limited company registered in London, company number 10957605, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 28 June 2027, and the CT600 for the period to 28 September 2026 is due at HMRC on 28 September 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 down £75K (-20.5%) on the year before, to -£439K.
- Net assets rose in 0 of 7 year-on-year comparisons on record.
- Current assets of £25K against £457K owed within a year: 0.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Sep 2025 | -£439K | £25K | £457K | 1 | |
| 28 Sep 2024 | -£364K | £36K | £386K | 1 | |
| 28 Sep 2023 | -£191K | £8,457 | £176K | 1 | |
| 28 Sep 2022 | -£150K | £13K | £132K | 1 | |
| 28 Sep 2021 | -£36K | £7,240 | £2,179 | 0 | |
| 28 Sep 2020 | -£31K | £9,256 | 0 | ||
| 30 Sep 2019 | £1 | ||||
| 30 Sep 2018 | £1 |
Where Mario Build Ltd is registered
The registered office is in London (NW2), in the Brent local authority area, London. Show NW2 7TA on a map.
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What happens if Mario Build 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 28 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Jun 2027 to 28 Jul 2027 | £150 |
| 1 to 3 months late | 29 Jul 2027 to 28 Sep 2027 | £375 |
| 3 to 6 months late | 29 Sep 2027 to 28 Dec 2027 | £750 |
| More than 6 months late | From 29 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Sep 2027 | £200 |
| 3 months late | 28 Dec 2027 | another £200 |
| 6 months late | 28 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Sep 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
- 10957605
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 September 2017 (9 years ago)
- Registered office
- 145 Randall Avenue, London, NW2 7TA
- Nature of business
- Other building completion and finishing (SIC 43390)
Other service activities n.e.c. (SIC 96090) - Year end
- 28 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 September 2025
- Last confirmation statement
- 18 August 2026
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.
- Mario Catia Rita Ltd2024
- Mariodabs Tiling Limited2015
- Mark Alexander Developments Limited2006
- Mark Fixit Limited2022
- Mark&C.O. Property Services Ltd2013
- Markoz Building Ltd2011
- Marku Steel Fixing Ltd2020
- Markus Schmid Kitchens Ltd2015
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Mario Build Ltd's accounts due?
Mario Build Ltd's next accounts are due at Companies House by 28 June 2027 (in 258 days), covering the period to 28 September 2026.
When is Mario Build Ltd's CT600 due?
The CT600 for the period to 28 September 2026 is due at HMRC by 28 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 June 2027.
Is Mario Build Ltd still trading?
Mario Build 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 Mario Build Ltd do?
Mario Build Ltd is registered under Other building completion and finishing (SIC 43390); Other service activities n.e.c. (SIC 96090).
How old is Mario Build Ltd?
Mario Build Ltd was incorporated on 12 September 2017, 9 years ago.
What is the penalty if Mario Build 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 Mario Build 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.