- Company number
- 11684217
- Incorporated
- 19 Nov 20187 years trading
- Registered office
- Suite 3, Grosvenor House, 1 High Street, London, HA8 7TA
- Nature of business
- Construction of domestic buildings
Quadrangle Construction Ltd is a 7-year-old private limited company registered in London, company number 11684217, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 27 November 2026, and its first CT600 is due at HMRC on 27 November 2026.
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 £1,683 (-90.4%) on the year before, to £179.
- Net assets rose in 2 of 5 year-on-year comparisons on record.
- Current assets of £64K against £64K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 27 Nov 2024 | £179 | £64K | £64K | 1 | |
| 30 Nov 2023 | £1,862 | £60K | £23K | 1 | |
| 29 Nov 2022 | £2,069 | £60K | £28K | 1 | |
| 29 Nov 2021 | £345 | £61K | £23K | 1 | |
| 30 Nov 2020 | £0 | £33K | £33K | 1 | |
| 30 Nov 2019 | £1 | £1 |
Where Quadrangle Construction Ltd is registered
The registered office is in London (HA8), in the Harrow local authority area, London. Show HA8 7TA on a map.
Other trade companies in HA8
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- Shreeji Decor LtdInstallers
- Kohli Group Properties LimitedProperty developers
- Brothers Landmark LtdProperty developers
- MS Flooring & Decor LtdFloor and wall tilers
- C&I Building Solutions LtdBuilders
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Also registered at this address
1 other company uses the same registered office as Quadrangle Construction Ltd.
- Studio Aa LtdProperty developers
What happens if Quadrangle 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 27 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Nov 2026 to 27 Dec 2026 | £150 |
| 1 to 3 months late | 28 Dec 2026 to 27 Feb 2027 | £375 |
| 3 to 6 months late | 28 Feb 2027 to 27 May 2027 | £750 |
| More than 6 months late | From 28 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 28 Feb 2027 | £200 |
| 3 months late | 27 May 2027 | another £200 |
| 6 months late | 27 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 27 Feb 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
- 11684217
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 November 2018 (7 years ago)
- Registered office
- Suite 3, Grosvenor House, 1 High Street, London, HA8 7TA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 26 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 27 November 2024
- Last confirmation statement
- 18 November 2025
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.
- Quadshine Polishing Ltd2026
- Qualent Limited2025
- Qualion Construction Group Ltd2022
- Qualitas London Limited2020
- Quality Abseiling Ltd2019
- Quality Builders Construction Limited2025
- Quality Contracting Limited2025
- Quality Fire Solutions Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Quadrangle Construction Ltd's accounts due?
Quadrangle Construction Ltd's next accounts are due at Companies House by 27 November 2026 (in 46 days), covering the period to 27 February 2026.
When is Quadrangle Construction Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 27 November 2025, due by 27 November 2026, and one for the period to 27 February 2026, due by 27 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Quadrangle Construction Ltd still trading?
Quadrangle 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 Quadrangle Construction Ltd do?
Quadrangle Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Quadrangle Construction Ltd?
Quadrangle Construction Ltd was incorporated on 19 November 2018, 7 years ago.
What is the penalty if Quadrangle 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 Quadrangle 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.