- Company number
- 11772807
- Incorporated
- 17 Jan 20197 years trading
- Registered office
- Flat 2, 25 Farringdon Road, London, EC1M 3HA
- Nature of business
- Construction of domestic buildings; Buying and selling of own real estate; Other letting and operating of own or leased real estate; Management of real estate on a fee or contract basis
Constellar Limited is a 7-year-old private limited company registered in London, company number 11772807, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £1,401 (+35.1%) on the year before, to £5,395.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £8,619 against £2,260 owed within a year: 3.8 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £5,395 | £8,619 | £2,260 | 0 | |
| 31 Mar 2024 | £3,994 | £8,848 | £2,556 | 0 | |
| 31 Mar 2023 | £2,651 | £11K | £2,689 | 0 | |
| 31 Mar 2022 | £1,968 | £12K | £2,784 | 0 | |
| 31 Mar 2021 | £1,522 | £14K | £2,088 | 0 | |
| 31 Mar 2020 | £906 | £1,115 | £209 | 2 |
Who runs and owns Constellar Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| M*** Z*** | Director | Jan 2019 |
| S*** Z*** | Director | Dec 2019 |
| A*** Z*** | Secretary | Jan 2019 |
People with significant control (2)
Where Constellar Limited is registered
The registered office is in London (EC1M), in the Camden local authority area, London. Show EC1M 3HA on a map.
Other trade companies in EC1M
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- Aevum Consulting LimitedProperty developers
- Sre B3 LimitedProperty developers
- Surrey Projects Group LtdBuilders
- Hampstead Flooring LtdFloor and wall tilers
- House Clarence LimitedProperty developers
- Suncat 1 LimitedProperty developers
What happens if Constellar 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11772807
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 January 2019 (7 years ago)
- Registered office
- Flat 2, 25 Farringdon Road, London, EC1M 3HA
- Nature of business
- Construction of domestic buildings (SIC 41202)
Buying and selling of own real estate (SIC 68100)
Other letting and operating of own or leased real estate (SIC 68209)
Management of real estate on a fee or contract basis (SIC 68320) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 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.
- Constinova Ltd2024
- Construct & Fit Solutions Ltd2025
- Construct Aeg Ltd2019
- Construct and Decor Limited2022
- Construct Group Alpha Ltd2024
- Construct Lifetime Ltd2025
- Construct Matrix Limited2026
- Construct Now Limited2023
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Constellar Limited's accounts due?
Constellar Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Constellar Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Constellar Limited still trading?
Constellar 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 Constellar Limited do?
Constellar Limited is registered under Construction of domestic buildings (SIC 41202); Buying and selling of own real estate (SIC 68100); Other letting and operating of own or leased real estate (SIC 68209); Management of real estate on a fee or contract basis (SIC 68320).
How old is Constellar Limited?
Constellar Limited was incorporated on 17 January 2019, 7 years ago.
Who runs Constellar Limited?
Constellar Limited has 2 active directors, the longest-serving appointed in Jan 2019. Their names and service addresses are on the Companies House register.
Who owns Constellar Limited?
2 people or companies have significant control of Constellar Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Constellar 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 Constellar 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.