Company profile · Builders
STM Constructors Limited
STM Constructors Limited is a 6-year-old private limited company registered in Dungannon, company number NI667188, one of 89 building contractors in Dungannon. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 January 2025, as filed at Companies House.
STM Constructors Limited over the years
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 £1,220 (+6.6%) on the year before, to £20K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £35K against £5,344 owed within a year: 6.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £20K | £35K | £5,344 | 0 | |
| 31 Jan 2024 | £18K | £20K | £350 | 0 | |
| 31 Jan 2023 | £18K | £20K | £350 | 0 | |
| 31 Jan 2022 | £19K | £24K | £4,543 | 0 | |
| 31 Jan 2021 | £19K | £238 | £24K | £5,080 | 1 |
Where STM Constructors Limited is registered
The registered office is in Dungannon (BT71), in the Mid Ulster local authority area, Northern Ireland. Show BT71 5JF on a map.
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What happens if STM Constructors 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 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 | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- NI667188
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 January 2020 (6 years ago)
- Registered office
- 24 North Street, Stewartstown, Dungannon, BT71 5JF
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Construction of other civil engineering projects n.e.c. (SIC 42990)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 6 March 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 Dungannon
Other active building contractors registered in Dungannon.
- TG Developers Ltd2014
- The Old Colliery Ltd2026
- Treeview Contracts Ltd2015
- Tyrone Bricklayers Ltd2026
- Tyrone Prefab Ltd2023
- Urban Pulse (Homes) Ltd2021
- VHL Construction Ltd2005
- W & A Property Developments Limited2005
All building contractors in Dungannon · All trades in Dungannon · Builders across the UK
Frequently asked questions
When are STM Constructors Limited's accounts due?
STM Constructors Limited's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is STM Constructors Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is STM Constructors Limited still trading?
STM Constructors 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 STM Constructors Limited do?
STM Constructors Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Construction of other civil engineering projects n.e.c. (SIC 42990); Other specialised construction activities n.e.c. (SIC 43999).
How old is STM Constructors Limited?
STM Constructors Limited was incorporated on 22 January 2020, 6 years ago.
What is the penalty if STM Constructors 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 STM Constructors Limited on Companies House for filed documents, officers and the full history.
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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.