- Company number
- 08884358
- Incorporated
- 10 Feb 201412 years trading
- Registered office
- 4 Green Lane Business Park, 238 Green Lanes New Eltham, London, SE9 3TL
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other building completion and finishing
Sanmar Construction Ltd is a 12-year-old private limited company registered in London, company number 08884358, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 May 2027, and the CT600 for the period to 30 August 2026 is due at HMRC on 30 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 £2,550 (+510%) on the year before, to £3,050.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £31K against £33K owed within a year: 0.9 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 Aug 2025 | £3,050 | £7,588 | £31K | £33K | 1 |
| 31 Aug 2024 | £500 | £1,048 | £18K | £17K | 1 |
| 31 Aug 2023 | -£28K | £21K | £49K | 1 | |
| 31 Aug 2022 | -£30K | £19K | £49K | 1 | |
| 31 Aug 2021 | -£28K | £0 | £19K | £48K | 1 |
| 31 Aug 2020 | -£29K | £8 | £2,747 | £32K | 1 |
| 31 Aug 2019 | -£27K | £188 | £3,708 | £31K | 1 |
| 31 Aug 2018 | -£13K | £49 | £28K | £41K | 3 |
| 28 Feb 2017 | £398 | £5 | £9,768 | £9,599 | 1 |
| 29 Feb 2016 | -£1,699 | £42 | £5,802 | £7,806 |
Where Sanmar Construction Ltd is registered
The registered office is in London (SE9), in the Greenwich local authority area, London. Show SE9 3TL on a map.
Other trade companies in SE9
- Valkor LtdBuilders
- M.A Developments (Ramsgate) LimitedProperty developers
- Sanchez Dec LtdPainters and decorators
- Yoi As LtdBuilders
- Interfix LtdSpecialist contractors
- South East London Locksmith LimitedSpecialist contractors
- S&O Maintenance LimitedInstallers
- Colvin Construction LimitedBuilders
Shared registered office
27 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 Sanmar Construction 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 May 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 30 Aug 2027 | £375 |
| 3 to 6 months late | 31 Aug 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 | 31 Aug 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 | 30 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
- 08884358
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 February 2014 (12 years ago)
- Registered office
- 4 Green Lane Business Park, 238 Green Lanes New Eltham, London, SE9 3TL
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390) - Year end
- 30 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 16 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 London
Other active building contractors registered in London.
- Sanreal Ltd2026
- Santo Developments Ltd2026
- Sapm Ltd2025
- Sara-Ady Construction Limited2024
- Sara777 Ltd2020
- Saraeli Ltd2018
- Sarah Wain Property Developer Ltd2026
- Sarcss Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Sanmar Construction Ltd's accounts due?
Sanmar Construction Ltd's next accounts are due at Companies House by 30 May 2027 (in 230 days), covering the period to 30 August 2026.
When is Sanmar Construction Ltd's CT600 due?
The CT600 for the period to 30 August 2026 is due at HMRC by 30 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 May 2027.
Is Sanmar Construction Ltd still trading?
Sanmar Construction 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 Sanmar Construction Ltd do?
Sanmar Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390).
How old is Sanmar Construction Ltd?
Sanmar Construction Ltd was incorporated on 10 February 2014, 12 years ago.
What is the penalty if Sanmar Construction 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 Sanmar Construction 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.