- Companies
- Finishing trades
- Kingsbury
- K.S.J Builder Ltd
K.S.J Builder Ltd
- Company number
- 12180569
- Incorporated
- 29 Aug 20197 years trading
- Registered office
- 78 Grove Crescent, Kingsbury, Greater London, NW9 0LR
- Nature of business
- Other building completion and finishing
K.S.J Builder Ltd is a 7-year-old private limited company registered in Kingsbury, company number 12180569, one of 11 building finishing companies in Kingsbury. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £18K on the year before, to £19K.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- Current assets of £31K against £12K owed within a year: 2.4 times cover.
- 2 employees on average during the year.
- 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 Oct 2025 | £19K | £31K | £12K | 2 | |
| 31 Oct 2024 | £1,704 | £26K | £25K | 2 | |
| 31 Oct 2023 | £3,252 | £40K | 2 | ||
| 30 Apr 2022 | £5,902 | £44K | £41K | 2 | |
| 30 Apr 2021 | £6,207 | £32K | £27K | 2 | |
| 30 Apr 2020 | £13K | £28K | £17K | 1 |
Where K.S.J Builder Ltd is registered
The registered office is in Kingsbury (NW9), in the Brent local authority area, London. Show NW9 0LR on a map.
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- Waely Sons LtdPlumbers and heating engineers
- GM Scaffolding London LtdScaffolders
- Onewais Services LtdCleaning companies
What happens if K.S.J Builder 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 12180569
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 August 2019 (7 years ago)
- Registered office
- 78 Grove Crescent, Kingsbury, Greater London, NW9 0LR
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 28 August 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Kingsbury
Other active building finishing companies registered in Kingsbury.
- Man Construct Ltd2016
- Me Building Services Limited2015
- P K Construction Services Limited2025
- R M Builders Limited2007
- RJP Innovations Ltd2021
- Sudbury Property Maintenance Limited2010
- Woodville Builders Ltd2006
- A.S.K. Home Improvement Services Limited2026
All building finishing companies in Kingsbury · All trades in Kingsbury · Finishing trades across the UK
Frequently asked questions
When are K.S.J Builder Ltd's accounts due?
K.S.J Builder Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is K.S.J Builder Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is K.S.J Builder Ltd still trading?
K.S.J Builder 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 K.S.J Builder Ltd do?
K.S.J Builder Ltd is registered under Other building completion and finishing (SIC 43390).
How old is K.S.J Builder Ltd?
K.S.J Builder Ltd was incorporated on 29 August 2019, 7 years ago.
What is the penalty if K.S.J Builder 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 K.S.J Builder 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.