- Companies
- Builders
- St Austell
- O'Mahoney Construction Ltd
O'Mahoney Construction Ltd
- Company number
- 08064168
- Incorporated
- 10 May 201214 years trading
- Registered office
- Holmleigh Red Lane, Bugle, St Austell, PL26 8QP
- Nature of business
- Construction of domestic buildings
O'Mahoney Construction Ltd is a 14-year-old private limited company registered in St Austell, company number 08064168, one of 29 building contractors in St Austell. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 down £77K (-29.1%) on the year before, to £187K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £195K against £51K owed within a year: 3.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £187K | £195K | £51K | 2 | |
| 31 May 2024 | £263K | £265K | £53K | 2 | |
| 31 May 2023 | £317K | £240K | £344K | £71K | 2 |
| 31 May 2022 | £387K | £405K | £73K | 2 | |
| 31 May 2021 | £347K | £366K | £66K | 2 | |
| 31 May 2020 | £340K | £309K | £34K | 2 | |
| 31 May 2019 | £343K | £350K | £70K | ||
| 31 May 2018 | £455K | £523K | £113K | ||
| 31 May 2017 | £208K | £233K | £79K | ||
| 31 May 2016 | £79K | £119K | £69K |
Where O'Mahoney Construction Ltd is registered
The registered office is in St Austell (PL26), in the Cornwall local authority area, South West. Show PL26 8QP on a map.
Other trade companies in PL26
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- Wall2Wall Building LtdBuilders
- Sam Bray Window Cleaning LtdCleaning companies
- Ocean Shore (SW) LtdBuilders
- Coast to Coast Water Engineering LtdSpecialist contractors
- Elevate Construction SW LimitedProperty developers
- Trelavour Road Garage (SW) LtdMechanics and garages
- Treverbyn Trade Cars T/A Treverbyn Car Sales LtdMotor traders
What happens if O'Mahoney 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 08064168
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 May 2012 (14 years ago)
- Registered office
- Holmleigh Red Lane, Bugle, St Austell, PL26 8QP
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 10 May 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 St Austell
Other active building contractors registered in St Austell.
- Oakvale South West Ltd2019
- Opus Design & Construction Ltd2019
- Rad Construction Ltd2018
- Rockhill Business Park Limited2005
- S Walden Construction Limited2024
- Sincock Buildings Ltd2023
- Spectrum Carpentry Limited2018
- Taylor Construction (Cornwall) Ltd2025
All building contractors in St Austell · All trades in St Austell · Builders across the UK
Frequently asked questions
When are O'Mahoney Construction Ltd's accounts due?
O'Mahoney Construction Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is O'Mahoney Construction Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is O'Mahoney Construction Ltd still trading?
O'Mahoney 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 O'Mahoney Construction Ltd do?
O'Mahoney Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is O'Mahoney Construction Ltd?
O'Mahoney Construction Ltd was incorporated on 10 May 2012, 14 years ago.
What is the penalty if O'Mahoney 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 O'Mahoney 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.