- Companies
- Specialist contractors
- Workington
- Mahoney Building Services Limited
Mahoney Building Services Limited
- Company number
- 05525600
- Incorporated
- 2 Aug 200521 years trading
- Registered office
- Milburn House, 3 Oxford Street, Workington, Cumbria, CA14 2AL
- Nature of business
- Other specialised construction activities n.e.c.
Mahoney Building Services Limited is a 21-year-old private limited company registered in Workington, company number 05525600, one of 9 specialist construction companies in Workington. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £6,726 (-18.3%) on the year before, to £30K.
- Net assets rose in 2 of 6 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £30K | £91K | £61K | 1 | |
| 31 Aug 2024 | £37K | £74K | £74K | £38K | 1 |
| 31 Aug 2023 | -£639 | £25K | £25K | £27K | 1 |
| 31 Aug 2022 | £7,558 | £86K | £79K | 1 | |
| 31 Aug 2021 | £24K | £180K | £156K | 1 | |
| 31 Aug 2020 | £18K | £185K | £167K | 1 | |
| 31 Aug 2019 | £28K | £181K | £154K | 1 |
Where Mahoney Building Services Limited is registered
The registered office is in Workington (CA14), in the Cumberland local authority area, North West. Show CA14 2AL on a map.
Other trade companies in CA14
- Premier Heating Solutions Cumbria LimitedPlumbers and heating engineers
- Northern Resin LtdFloor and wall tilers
- GRT Property Solutions LtdPlumbers and heating engineers
- Jre Partitions and Ceilings LimitedInstallers
- Fellside Homes & Renovations(Cumbria) LtdProperty developers
- Pristine Plumb & Bath LtdPlumbers and heating engineers
- The Cumbrian Painting Company LtdBuilders
- J.Proud Plastering LtdPlasterers
Shared registered office
40 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 Mahoney Building Services Limited 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 05525600
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 August 2005 (21 years ago)
- Registered office
- Milburn House, 3 Oxford Street, Workington, Cumbria, CA14 2AL
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 10 May 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 Workington
Other active specialist construction companies registered in Workington.
- Solway Blast Cleaning Limited2011
- Top Storry Access Ltd2017
- Allerdale Thermal Insulation Limited2022
- Dargavel Engineering Limited1995
- Energy Efficient Window Systems Limited2021
- Helgar Offshore Safety Limited2013
- Lake District Property Services Ltd2026
- M&D Wallace E&I Ltd2008
All specialist construction companies in Workington · All trades in Workington · Specialist contractors across the UK
Frequently asked questions
When are Mahoney Building Services Limited's accounts due?
Mahoney Building Services Limited's next accounts are due at Companies House by 30 June 2027 (in 259 days), covering the period to 30 September 2026.
When is Mahoney Building Services Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Mahoney Building Services Limited still trading?
Mahoney Building Services Limited 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 Mahoney Building Services Limited do?
Mahoney Building Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mahoney Building Services Limited?
Mahoney Building Services Limited was incorporated on 2 August 2005, 21 years ago.
What is the penalty if Mahoney Building Services Limited 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 Mahoney Building Services Limited 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.