- Companies
- Specialist contractors
- Truro
- Altcor Construction Ltd
Altcor Construction Ltd
- Company number
- 11785722
- Incorporated
- 24 Jan 20197 years trading
- Registered office
- C/O Whyfield Truro Business Park, Threemilestone, Truro, Cornwall, TR4 9LF
- Nature of business
- Other specialised construction activities n.e.c.
Altcor Construction Ltd is a 7-year-old private limited company registered in Truro, company number 11785722, one of 45 specialist construction companies in Truro. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 up £6,733 (+12.4%) on the year before, to £61K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £115K against £54K owed within a year: 2.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £61K | £115K | £54K | 1 | |
| 31 Mar 2024 | £54K | £61K | £7,038 | 1 | |
| 31 Mar 2023 | £29K | £39K | 0 | ||
| 31 Mar 2022 | £22K | £33K | £17K | 1 | |
| 31 Mar 2021 | £39K | £44K | £8,964 | 1 | |
| 31 Jan 2020 | £15K | £32K | £24K | 1 |
Where Altcor Construction Ltd is registered
The registered office is in Truro (TR4), in the Cornwall local authority area, South West. Show TR4 9LF on a map.
Other trade companies in TR4
- I Spy Group SW LtdElectricians
- Harbour & Stone Developments LtdProperty developers
- Switched on Land and Developments LimitedProperty developers
- Wren Developments LtdProperty developers
- Level Up Refurbishments LtdFinishing trades
- Stratton Cleaning Co LtdCleaning companies
- Slate Worx (Cornwall) LtdRoofers
- C & L Developments LimitedProperty developers
Shared registered office
52 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Altcor 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11785722
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 January 2019 (7 years ago)
- Registered office
- C/O Whyfield Truro Business Park, Threemilestone, Truro, Cornwall, TR4 9LF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 23 January 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Truro
Other active specialist construction companies registered in Truro.
- Bearham Property Management Ltd2014
- Cornish Stone Walling Limited2004
- Cornish Stonework (Truro) Limited2007
- Cornwall Arenas Limited2012
- Cornwall Garage Door Centre Limited2002
- CT Power Solutions Ltd2016
- Desmonde & Associates Ltd2011
- DPR Offshore Ltd2012
All specialist construction companies in Truro · All trades in Truro · Specialist contractors across the UK
Frequently asked questions
When are Altcor Construction Ltd's accounts due?
Altcor Construction Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Altcor Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Altcor Construction Ltd still trading?
Altcor 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 Altcor Construction Ltd do?
Altcor Construction Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Altcor Construction Ltd?
Altcor Construction Ltd was incorporated on 24 January 2019, 7 years ago.
What is the penalty if Altcor 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 Altcor 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.