- Company number
- 09095692
- Incorporated
- 20 Jun 201412 years trading
- Registered office
- 8 Axis Court Mallard Way, Riverside Business Park, Swansea, SA7 0AJ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Calon Construction Ltd is a 12-year-old private limited company registered in Swansea, company number 09095692, one of 204 building contractors in Swansea. Its next accounts are due at Companies House on 30 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 £381K (-77.5%) on the year before, to £111K.
- Current assets of £1.9M against £2.2M owed within a year: 0.9 times cover.
- 6 employees on average, up from 5 the year before.
- Balance sheets on record for 4 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £111K | £24K | £1.9M | £2.2M | 6 |
| 30 Jun 2023 | £492K | £178 | £1.2M | £535K | 5 |
| 30 Jun 2022 | £161K | £88 | £134K | £164K | 5 |
| 30 Jun 2015 | £239K |
Where Calon Construction Ltd is registered
The registered office is in Swansea (SA7), in the Swansea local authority area, Wales. Show SA7 0AJ on a map.
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- Pops Power Solutions LtdElectricians
- Perfect Roofing and Home Maintenance LimitedRoofers
- Eveo Engineering LtdElectricians
- Performance Bunker Liner LimitedSpecialist contractors
- Swan Roofing LimitedRoofers
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Also registered at this address
15 other companies use the same registered office as Calon Construction Ltd.
- 6 High Street Holdings LtdProperty developers
- A P Architecture and Planning LtdSpecialist contractors
- CDL Building and Carpentry LimitedBuilders
- Cursio Construction LtdBuilders
- Gex Carpentry LtdSpecialist contractors
- Idl Scaffolding LtdScaffolders
- J3 Electrical Services LimitedElectricians
- Jaxx Autos LimitedMechanics and garages
- Lynch Scaffolding System LimitedSpecialist contractors
- MOT and Clutch Specialists LtdMechanics and garages
- NT Framing LtdJoiners and carpenters
- Red Snapper Developments LtdFinishing trades
- SPG Carpentry LtdJoiners and carpenters
- TSCS Ops LimitedProperty developers
- Urban Haus Investments LimitedProperty developers
What happens if Calon Construction 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 30 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Oct 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 30 Jan 2027 | £375 |
| 3 to 6 months late | 31 Jan 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Jan 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 30 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jan 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
- 09095692
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 2014 (12 years ago)
- Registered office
- 8 Axis Court Mallard Way, Riverside Business Park, Swansea, SA7 0AJ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 29 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 19 April 2026
- Charges (mortgages)
- 3 outstanding of 6 registered
- Previous names
- SPJ Properties Ltd (until 19 Feb 2021)
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.
- 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
- CJWR Construction Ltd2024
All building contractors in Swansea · All trades in Swansea · Builders across the UK
Frequently asked questions
When are Calon Construction Ltd's accounts due?
Calon Construction Ltd's next accounts are due at Companies House by 30 October 2026 (in 18 days), covering the period to 30 January 2026.
When is Calon Construction 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 31 October 2025, due by 31 October 2026, and one for the period to 30 January 2026, due by 30 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Calon Construction Ltd still trading?
Calon Construction 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 Calon Construction Ltd do?
Calon Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Calon Construction Ltd?
Calon Construction Ltd was incorporated on 20 June 2014, 12 years ago.
What is the penalty if Calon Construction 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 Calon Construction 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.