- Companies
- Plumbers and heating engineers
- Dundee
- Senmac Heating Solutions Ltd
Senmac Heating Solutions Ltd
- Company number
- SC783141
- Incorporated
- 19 Sep 20233 years trading
- Registered office
- 10 Appleby Place, Dundee, DD3 9BL
- Nature of business
- Plumbing, heat and air-conditioning installation
Senmac Heating Solutions Ltd is a 3-year-old private limited company registered in Dundee, company number SC783141, one of 98 plumbing and heating companies in Dundee. 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 up £3,233 on the year before, to £3,233.
- Current assets of £5,431 against £1,398 owed within a year: 3.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £3,233 | £5,431 | £1,398 | 1 | |
| 30 Sep 2024 | £0 | £1,039 | £639 | 1 |
Where Senmac Heating Solutions Ltd is registered
The registered office is in Dundee (DD3), in the Dundee City local authority area, Scotland. Show DD3 9BL on a map.
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What happens if Senmac Heating Solutions 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 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
- SC783141
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 September 2023 (3 years ago)
- Registered office
- 10 Appleby Place, Dundee, DD3 9BL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 18 September 2025
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Dundee
Other active plumbing and heating companies registered in Dundee.
- SJ Plumbheat Dundee Limited2026
- SL Multitrade Ltd2020
- Steven McLean Gas Services Limited2023
- Stewart Heating Services Ltd2019
- Strathmore Gas Heating Solutions Ltd2026
- Stuart Edgar Plumbing & Heating Ltd2015
- Taygas Group Ltd2026
- Tayside Gas Services Ltd2021
All plumbing and heating companies in Dundee · All trades in Dundee · Plumbers and heating engineers across the UK
Frequently asked questions
When are Senmac Heating Solutions Ltd's accounts due?
Senmac Heating Solutions Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Senmac Heating Solutions Ltd'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 Senmac Heating Solutions Ltd still trading?
Senmac Heating Solutions Ltd is listed as active on the Companies House register (checked 12 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 Senmac Heating Solutions Ltd do?
Senmac Heating Solutions Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Senmac Heating Solutions Ltd?
Senmac Heating Solutions Ltd was incorporated on 19 September 2023, 3 years ago.
What is the penalty if Senmac Heating Solutions 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 Senmac Heating Solutions Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.