- Company number
- 13422277
- Incorporated
- 26 May 20215 years trading
- Registered office
- First Floor, Winston House, 349 Regents Park Road, London, N3 1DH
- Nature of business
- Construction of domestic buildings
JK Builders Services Ltd is a 5-year-old private limited company registered in London, company number 13422277, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £2,836 (+2.2%) on the year before, to £135K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £2M against £1.9M owed within a year: 1.1 times cover.
- 13 employees on average, up from 8 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 May 2025 | £135K | £633K | £2M | £1.9M | 13 |
| 31 May 2024 | £132K | £103K | £1.4M | £1.2M | 8 |
| 31 May 2023 | £128K | £202K | £478K | £353K | 4 |
| 31 May 2022 | £74K | £227K | £437K | £362K | 1 |
Where JK Builders Services Ltd is registered
The registered office is in London (N3), in the Barnet local authority area, London. Show N3 1DH on a map.
Other trade companies in N3
- Key & Keep LtdCleaning companies
- GMS Residential LimitedPlumbers and heating engineers
- Gcap East LtdProperty developers
- Tatras Development LimitedProperty developers
- Chesterfield Corinne LtdProperty developers
- Pure Plumbing Pros LimitedPlumbers and heating engineers
- WS Cleaning Services LtdCleaning companies
- Landfall Projects LimitedProperty developers
Shared registered office
73 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 JK Builders Services 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 13422277
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 May 2021 (5 years ago)
- Registered office
- First Floor, Winston House, 349 Regents Park Road, London, N3 1DH
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 1 July 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.
- JK Building Construction Limited2016
- JK Building Ltd2023
- JK Carpenter Ltd2015
- JK Construction Cheshire Ltd2023
- JK General Construction Ltd2024
- JK&K Construction Limited2025
- JK25 Ltd2025
- Jkelly Brickwork & Building Contractors Limited2023
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are JK Builders Services Ltd's accounts due?
JK Builders Services Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is JK Builders Services Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is JK Builders Services Ltd still trading?
JK Builders Services 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 JK Builders Services Ltd do?
JK Builders Services Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is JK Builders Services Ltd?
JK Builders Services Ltd was incorporated on 26 May 2021, 5 years ago.
What is the penalty if JK Builders Services 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 JK Builders Services 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.