- Company number
- 16557901
- Incorporated
- 2 Jul 20251 year trading
- Registered office
- 159 High Street, Barnet, EN5 5SU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Management consultancy activities other than financial management; Leasing of intellectual property and similar products, except copyright works
RJB Build Ltd is a 1-year-old private limited company registered in Barnet, company number 16557901, one of 201 building contractors in Barnet. Its next accounts are due at Companies House on 2 April 2027, and its first CT600 is due at HMRC on 1 July 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Who runs and owns RJB Build Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| R*** B*** | Director | Jul 2025 |
Person with significant control
Where RJB Build Ltd is registered
The registered office is in Barnet (EN5), in the Barnet local authority area, London. Show EN5 5SU on a map.
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- Greatway Business LtdInstallers
- Je Mobile Tyres LtdMechanics and garages
- Barnet Air LtdPlumbers and heating engineers
- Hutch Electrical LtdElectricians
- Nexflow Mechanical LtdSpecialist contractors
- A J Plant LtdMotor traders
- Plumbing365 LtdPlumbers and heating engineers
Shared registered office
46 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 RJB Build 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 2 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 3 Apr 2027 to 2 May 2027 | £150 |
| 1 to 3 months late | 3 May 2027 to 2 Jul 2027 | £375 |
| 3 to 6 months late | 3 Jul 2027 to 2 Oct 2027 | £750 |
| More than 6 months late | From 3 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16557901
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2025 (1 year ago)
- Registered office
- 159 High Street, Barnet, EN5 5SU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Management consultancy activities other than financial management (SIC 70229)
Leasing of intellectual property and similar products, except copyright works (SIC 77400) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- 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 Barnet
Other active building contractors registered in Barnet.
- Romeo Build UK Limited2022
- RP Builders Ltd2018
- Ryan Building & Maintenance Limited2017
- Sam Improve Property Ltd2024
- Shameti Construction Ltd2023
- Spears Management Ltd2024
- SSP Construction Bristol Ltd2025
- Stevens Builders Ltd2014
All building contractors in Barnet · All trades in Barnet · Builders across the UK
Frequently asked questions
When are RJB Build Ltd's accounts due?
RJB Build Ltd's next accounts are due at Companies House by 2 April 2027 (in 171 days), covering the period to 31 July 2026.
When is RJB Build 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 1 July 2026, due by 1 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is RJB Build Ltd still trading?
RJB Build 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 RJB Build Ltd do?
RJB Build Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Management consultancy activities other than financial management (SIC 70229); Leasing of intellectual property and similar products, except copyright works (SIC 77400).
How old is RJB Build Ltd?
RJB Build Ltd was incorporated on 2 July 2025, 1 year ago.
Who runs RJB Build Ltd?
RJB Build Ltd has 1 active director, the longest-serving appointed in Jul 2025. Their names and service addresses are on the Companies House register.
Who owns RJB Build Ltd?
One person or company has significant control of RJB Build Ltd: Rjb Invest Holdings Ltd (owns 75% or more of the shares).
What is the penalty if RJB Build 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 RJB Build 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.