- Company number
- 16047497
- Incorporated
- 29 Oct 20241 year trading
- Registered office
- Unit 16, Woodlands Business Park, Swansea, SA9 1JW
- Nature of business
- Construction of domestic buildings; Other building and industrial cleaning activities
Caimason Building Services Ltd is a 1-year-old private limited company registered in Swansea, company number 16047497, one of 204 building contractors in Swansea. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Caimason Building Services LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
Who runs and owns Caimason Building Services Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| M*** G*** | Director | Oct 2024 |
Person with significant control
Where Caimason Building Services Ltd is registered
The registered office is in Swansea (SA9), in the Powys local authority area, Wales. Show SA9 1JW on a map.
Other trade companies in SA9
- Eidolon Renovations LtdPlumbers and heating engineers
- Michael Jones Renovations LtdProperty developers
- Cyfyng Road Developments LtdFinishing trades
- Orwell’S Accident Repair LtdMechanics and garages
- WLM Car and Commercial Services LtdMotor traders
- Tom Graham Maintenance LtdFinishing trades
- Precious Time Cleaning Solutions LtdCleaning companies
- TD Heating Solutions LtdPlumbers and heating engineers
Also registered at this address
2 other companies use the same registered office as Caimason Building Services Ltd.
- Caimason Roofing LtdRoofers
- Warm Homes Energy Solutions LtdInstallers
What happens if Caimason Building 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16047497
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 October 2024 (1 year ago)
- Registered office
- Unit 16, Woodlands Business Park, Swansea, SA9 1JW
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building and industrial cleaning activities (SIC 81229) - Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 28 October 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 Swansea
Other active building contractors registered in Swansea.
- Calon Construction Ltd2014
- Cambrica Timber Frames Limited2024
- Capel Construction Ltd2025
- Caradog Landscapes Limited2016
- Castell Construction Ltd2019
- Castle View Mumbles Ltd2020
- Cdaa Services Limited2023
- CDL Building and Carpentry Limited2013
All building contractors in Swansea · All trades in Swansea · Builders across the UK
Frequently asked questions
When are Caimason Building Services Ltd's accounts due?
Caimason Building Services Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Caimason Building Services Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Caimason Building Services Ltd still trading?
Caimason Building 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 Caimason Building Services Ltd do?
Caimason Building Services Ltd is registered under Construction of domestic buildings (SIC 41202); Other building and industrial cleaning activities (SIC 81229).
How old is Caimason Building Services Ltd?
Caimason Building Services Ltd was incorporated on 29 October 2024, 1 year ago.
Who runs Caimason Building Services Ltd?
Caimason Building Services Ltd has 1 active director, the longest-serving appointed in Oct 2024. Their names and service addresses are on the Companies House register.
Who owns Caimason Building Services Ltd?
One person or company has significant control of Caimason Building Services Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Caimason Building 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 Caimason Building 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.