- Company number
- 13802412
- Incorporated
- 15 Dec 20214 years trading
- Registered office
- 47 Elsenham Road, London, E12 6JZ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Kirsi Constructions Ltd is a 4-year-old private limited company registered in London, company number 13802412, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £19K (+58.7%) on the year before, to £51K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £70K against £18K owed within a year: 3.8 times cover.
- 3 employees on average, up from 1 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £51K | £70K | £18K | 3 | |
| 31 Dec 2024 | £32K | £65K | £32K | 1 | |
| 31 Dec 2023 | £24K | £27K | £2,827 | 1 | |
| 31 Dec 2022 | £13K | £25K | 1 |
Where Kirsi Constructions Ltd is registered
The registered office is in London (E12), in the Newham local authority area, London. Show E12 6JZ on a map.
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What happens if Kirsi Constructions 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 13802412
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 December 2021 (4 years ago)
- Registered office
- 47 Elsenham Road, London, E12 6JZ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 14 December 2025
- Previous names
- B.S Constructions London Limited (until 7 Aug 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.
- Kitan Constructions Ltd2025
- Kitkat Contstruction Ltd2021
- Kitzan Ltd2024
- Kivo Construction Ltd2026
- Kiwibuildingandpropertyservices Ltd2025
- KJ Flooring Ltd2018
- Kja Solutions Ltd2024
- KJC Builders Limited2015
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Frequently asked questions
When are Kirsi Constructions Ltd's accounts due?
Kirsi Constructions Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Kirsi Constructions Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Kirsi Constructions Ltd still trading?
Kirsi Constructions 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 Kirsi Constructions Ltd do?
Kirsi Constructions Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Kirsi Constructions Ltd?
Kirsi Constructions Ltd was incorporated on 15 December 2021, 4 years ago.
What is the penalty if Kirsi Constructions 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 Kirsi Constructions 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.