- Company number
- 15028578
- Incorporated
- 25 Jul 20233 years trading
- Registered office
- 1ST Floor Office Suite, the Old Cornstore, London Road, Westerham, TN16 1GE
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
J&B Building Contractors Limited is a 3-year-old private limited company registered in Westerham, company number 15028578, one of 49 building contractors in Westerham. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £94K (+122%) on the year before, to £172K.
- Current assets of £237K against £125K owed within a year: 1.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £172K | £237K | £125K | 2 | |
| 31 Mar 2025 | £77K | £127K | £121K | 2 | |
| 31 Mar 2024 | £34K | £75K | £102K | 2 |
Public contracts won
J&B Building Contractors Limited has 10 public sector contract awards on record; the ones with their own published value total £11M, from 2023 to 2026. Source: Contracts Finder and Find a Tender award notices. 4 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Kent County Council9 awards
- Kent County Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Kent County Council | CN260680 St Michaels CEJS Mobile Replacement | £131K | 5 Jun 2026 |
| Kent County Council | Faversham Highways Depot KCC Office Refurb | £145K | 26 May 2026 |
| Kent County Council | Lydden Primary School - Mobile Refurbishment | £218K | 27 Apr 2026 |
| Kent County Council | Bean Primary School - Mobile Refurbishment | £10M | 4 Aug 2025 |
| Kent County Council | DN769856The Lighthouse - Community Programme | £137K | 1 Aug 2025 |
| Kent County Council | St Margaret's-at-Cliffe Mobile Refurbishment | £108K | 22 Jul 2025 |
| Kent County Council | Ifield School Toilet Refurbishment | £75K | 23 May 2025 |
| Kent County Council | Canterbury ASU - New kitchen and shower room | £40K | 12 Dec 2024 |
| Kent County Council | SC240021 - Wickhambreaux CEP School Roof Replacement Works | £122K | 18 Jun 2024 |
| Kent County Council | Brook Primary School - Resurfacing Works | £27K | 1 Sep 2023 |
Where J&B Building Contractors Limited is registered
The registered office is in Westerham (TN16), in the Sevenoaks local authority area, South East. Show TN16 1GE on a map.
Other trade companies in TN16
- Fuller & Sons Carpentry LtdProperty developers
- Protech Air Solutions LtdPlumbers and heating engineers
- DW Construction (South) LimitedCivil engineering
- Danvic Facilities & Refurbishment LimitedSpecialist contractors
- The Plumbing Brothers LtdFinishing trades
- Beckenham Driveways and Patios LtdInstallers
- Christmas Tree Farm Outdoors Services LtdLandscapers and gardeners
- Jak Rolling LimitedPainters and decorators
What happens if J&B Building Contractors 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 15028578
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 July 2023 (3 years ago)
- Registered office
- 1ST Floor Office Suite, the Old Cornstore, London Road, Westerham, TN16 1GE
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 24 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 Westerham
Other active building contractors registered in Westerham.
- JB Bakers Ltd2026
- K&J Surfacing Ltd2019
- LSS Construction Services Ltd2025
- M & R Building & Landscaping Ltd2013
- M&A Building Services Ltd2022
- Malecky Ltd2020
- Masrock Trades Limited2012
- New Horizon Structures Ltd2023
All building contractors in Westerham · All trades in Westerham · Builders across the UK
Frequently asked questions
When are J&B Building Contractors Limited's accounts due?
J&B Building Contractors Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is J&B Building Contractors Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is J&B Building Contractors Limited still trading?
J&B Building Contractors 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 J&B Building Contractors Limited do?
J&B Building Contractors Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is J&B Building Contractors Limited?
J&B Building Contractors Limited was incorporated on 25 July 2023, 3 years ago.
Has J&B Building Contractors Limited won public sector contracts?
Yes. J&B Building Contractors Limited has 10 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £11M), most recently from Kent County Council.
What is the penalty if J&B Building Contractors 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 J&B Building Contractors 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.