- Company number
- 15909232
- Incorporated
- 21 Aug 20242 years trading
- Registered office
- PO Box 4385, 15909232 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Construction of domestic buildings
Linsum Building Contractors Ltd is a 2-year-old private limited company registered in Cardiff, company number 15909232, one of 361 building contractors in Cardiff. Companies House shows its accounts as overdue: they were due on 21 May 2026.
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 Linsum Building Contractors Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** B*** | Director | Aug 2024 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| C*** C*** | Director | Aug 2024 | Nov 2024 |
Person with significant control
Where Linsum Building Contractors Ltd is registered
The registered office is in Cardiff (CF14), in the Caerphilly local authority area, Wales. Show CF14 8LH on a map.
Other trade companies in CF14
- Velren Group LtdProperty developers
- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if Linsum Building Contractors Ltd files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 May 2026 to 21 Jun 2026 | £150 |
| 1 to 3 months late | 22 Jun 2026 to 21 Aug 2026 | £375 |
| 3 to 6 months late | 22 Aug 2026 to 21 Nov 2026 | £750 |
| More than 6 months late | From 22 Nov 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2026 | £200 |
| 3 months late | 30 Nov 2026 | another £200 |
| 6 months late | 28 Feb 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2027 | 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
- 15909232
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2024 (2 years ago)
- Registered office
- PO Box 4385, 15909232 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 20 August 2025
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 Cardiff
Other active building contractors registered in Cardiff.
- LLW Construction and Carpentry Ltd2024
- LMJ Properties Limited2012
- Lock Property Maintenance Ltd2021
- Logicmatrix Design Limited2016
- London Prime Builders Ltd2024
- LT Interiors Limited2024
- Ludlow Lewis Limited2005
- Luke Watson Plastering Ltd2026
All building contractors in Cardiff · All trades in Cardiff · Builders across the UK
Frequently asked questions
When are Linsum Building Contractors Ltd's accounts due?
Linsum Building Contractors Ltd's accounts were due at Companies House on 21 May 2026 and the register shows them as overdue.
When is Linsum Building Contractors 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 20 August 2025, due by 20 August 2026, and one for the period to 31 August 2025, due by 31 August 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Linsum Building Contractors Ltd still trading?
Linsum Building Contractors Ltd is listed as active on the Companies House register (checked 12 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 Linsum Building Contractors Ltd do?
Linsum Building Contractors Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Linsum Building Contractors Ltd?
Linsum Building Contractors Ltd was incorporated on 21 August 2024, 2 years ago.
Who runs Linsum Building Contractors Ltd?
Linsum Building Contractors Ltd has 1 active director, the longest-serving appointed in Aug 2024. Their names and service addresses are on the Companies House register.
Who owns Linsum Building Contractors Ltd?
One person or company has significant control of Linsum Building Contractors Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Linsum Building Contractors 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 Linsum Building Contractors Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.