- Companies
- Installers
- London
- Martinez & Sons Building Maintenance Limited
Martinez & Sons Building Maintenance Limited
- Company number
- 06254795
- Incorporated
- 22 May 200719 years trading
- Registered office
- 1-B Gladstone Parade, Edgware Road, London, NW2 6JR
- Nature of business
- Other construction installation
Martinez & Sons Building Maintenance Limited is a 19-year-old private limited company registered in London, company number 06254795, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £22K (+22.5%) on the year before, to £119K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £190K against £87K owed within a year: 2.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £119K | £34K | £190K | £87K | 0 |
| 30 Jun 2024 | £97K | £71K | £196K | £113K | 0 |
| 30 Jun 2023 | £98K | £32K | £196K | £96K | 0 |
| 30 Jun 2022 | £75K | £11K | £214K | £133K | 0 |
| 30 Jun 2021 | £40K | £20K | £159K | £102K | 0 |
| 30 Jun 2020 | £30K | £33K | £116K | £64K | 0 |
| 30 Jun 2019 | £32K | £38K | £114K | £85K | 0 |
| 30 Jun 2018 | £24K | £16K | £89K | £67K | 0 |
| 30 Jun 2017 | £27K | £7,488 | £53K | £28K | 0 |
| 30 Jun 2016 | £42K | £25K | £87K | £48K |
Where Martinez & Sons Building Maintenance Limited is registered
The registered office is in London (NW2), in the Brent local authority area, London. Show NW2 6JR on a map.
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What happens if Martinez & Sons Building Maintenance 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 06254795
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 May 2007 (19 years ago)
- Registered office
- 1-B Gladstone Parade, Edgware Road, London, NW2 6JR
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 22 May 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Martins Blinds Ltd2018
- Marvel Group Limited2016
- Marylebone Building & Maintenance Ltd2026
- Marylebone Interiors London Ltd2012
- Marzu Ltd2014
- Masen Property Maintenance Limited2026
- Mason Construction Limited2016
- Matei Construct Ltd2026
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Martinez & Sons Building Maintenance Limited's accounts due?
Martinez & Sons Building Maintenance Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Martinez & Sons Building Maintenance Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Martinez & Sons Building Maintenance Limited still trading?
Martinez & Sons Building Maintenance 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 Martinez & Sons Building Maintenance Limited do?
Martinez & Sons Building Maintenance Limited is registered under Other construction installation (SIC 43290).
How old is Martinez & Sons Building Maintenance Limited?
Martinez & Sons Building Maintenance Limited was incorporated on 22 May 2007, 19 years ago.
What is the penalty if Martinez & Sons Building Maintenance 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 Martinez & Sons Building Maintenance 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.