- Companies
- Plumbers and heating engineers
- Brentwood
- SJB Mechanical & Building Services Limited
SJB Mechanical & Building Services Limited
- Company number
- 06923966
- Incorporated
- 4 Jun 200917 years trading
- Registered office
- Wessex Lodge Wrights Lane, Wyatts Green, Brentwood, Essex, CM15 0QA
- Nature of business
- Plumbing, heat and air-conditioning installation
SJB Mechanical & Building Services Limited is a 17-year-old private limited company registered in Brentwood, company number 06923966, one of 84 plumbing and heating companies in Brentwood. 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 down £9,038 (-87.5%) on the year before, to £1,293.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £65K against £64K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £1,293 | £616 | £65K | £64K | 0 |
| 31 May 2024 | £10K | £565 | £47K | £39K | 2 |
| 31 May 2023 | £10K | £104 | £83K | £63K | 2 |
| 31 May 2022 | £6,047 | £2,388 | £43K | £22K | 2 |
| 31 May 2021 | £1,011 | £104 | £61K | £47K | 2 |
| 31 May 2020 | £1,786 | £99 | £44K | £52K | 2 |
| 31 May 2019 | £6,356 | £80K | £81K | 2 | |
| 31 May 2018 | £1,304 | £23K | £77K | £84K | 2 |
| 31 May 2017 | £1,049 | £682 | £33K | £40K | 2 |
Who runs and owns SJB Mechanical & Building Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| S*** B*** | Director | Jun 2009 |
| E*** B*** | Director | Jun 2015 |
| E*** B*** | Secretary | Jun 2009 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| E*** S*** | Director | Jun 2015 | Jan 2026 |
People with significant control (2)
Where SJB Mechanical & Building Services Limited is registered
The registered office is in Brentwood (CM15), in the Brentwood local authority area, East of England. Show CM15 0QA on a map.
Other trade companies in CM15
- JJ Freeman Construction LtdGroundworks and demolition
- Sky Loft London LtdFinishing trades
- LDN Systems LtdRoofers
- LDN Traditional Roofing LtdRoofers
- Reactive Roofers LtdRoofers
- K.Fire.Safety LtdElectricians
- Elevation Roofing Group LimitedRoofers
- Krosshatch Creative Concepts LimitedProperty developers
What happens if SJB Mechanical & Building Services 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 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
- 06923966
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 June 2009 (17 years ago)
- Registered office
- Wessex Lodge Wrights Lane, Wyatts Green, Brentwood, Essex, CM15 0QA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 5 June 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Brentwood
Other active plumbing and heating companies registered in Brentwood.
- South East Ducting Solutions Ltd2021
- South Essex Plumbing and Heating Limited2022
- SS Top Trade Ltd2023
- Synergy 7 Group Ltd1997
- T. M. S. Mechanical Services Limited2018
- TCM Plumbing & Heating Limited2017
- TDK Plumbing & Heating Ltd2026
- Technical Gas Heating & Plumbing Ltd2019
All plumbing and heating companies in Brentwood · All trades in Brentwood · Plumbers and heating engineers across the UK
Frequently asked questions
When are SJB Mechanical & Building Services Limited's accounts due?
SJB Mechanical & Building Services Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is SJB Mechanical & Building Services Limited'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 SJB Mechanical & Building Services Limited still trading?
SJB Mechanical & Building Services 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 SJB Mechanical & Building Services Limited do?
SJB Mechanical & Building Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is SJB Mechanical & Building Services Limited?
SJB Mechanical & Building Services Limited was incorporated on 4 June 2009, 17 years ago.
Who runs SJB Mechanical & Building Services Limited?
SJB Mechanical & Building Services Limited has 2 active directors, the longest-serving appointed in Jun 2009. Their names and service addresses are on the Companies House register.
Who owns SJB Mechanical & Building Services Limited?
2 people or companies have significant control of SJB Mechanical & Building Services Limited: an individual (can appoint and remove directors); an individual (owns 25% to 50% of the shares).
What is the penalty if SJB Mechanical & Building Services 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 SJB Mechanical & Building Services 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.