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- Plumbers and heating engineers
- Northampton
- Dmzconstruct Ltd
Company profile · Plumbers and heating engineers
Dmzconstruct Ltd
Dmzconstruct Ltd is a 2-year-old private limited company registered in Northampton, company number 15904540, one of 197 plumbing and heating companies in Northampton. Its next accounts are due at Companies House on 31 May 2028, and the CT600 for the period to 31 August 2027 is due at HMRC on 31 August 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 August 2026, as filed at Companies House.
Dmzconstruct Ltd 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 down £123 (-0.7%) on the year before, to £16K.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2026 | £16K | £16K | £0 | 0 | |
| 31 Aug 2025 | £17K | £21K | £3,889 | 0 |
Where Dmzconstruct Ltd is registered
The registered office is in Northampton (NN3), in the West Northamptonshire local authority area, East Midlands. Show NN3 3RS on a map.
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- Oakwell Energy Systems LtdElectricians
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- BC Developments and Construction Group UK LtdProperty developers
What happens if Dmzconstruct 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 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2028 to 30 Jun 2028 | £150 |
| 1 to 3 months late | 1 Jul 2028 to 31 Aug 2028 | £375 |
| 3 to 6 months late | 1 Sep 2028 to 30 Nov 2028 | £750 |
| More than 6 months late | From 1 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 15904540
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 August 2024 (2 years ago)
- Registered office
- 42 Rickyard Road, Northampton, NN3 3RS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Joinery installation (SIC 43320)
Painting (SIC 43341) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2026
- Last confirmation statement
- 12 August 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 Northampton
Other active plumbing and heating companies registered in Northampton.
- DT Services (Northampton) Limited2011
- Ductwork Solutions Ltd2025
- E.J. Wheldon Heating & Plumbing Limited2018
- Easyfix Plumbing Ltd2025
- Ec Plumbing & Heating Limited2022
- Ecoflow Heating Solutions Ltd2026
- Ehp Services Ltd2016
- Element Energy Limited2026
All plumbing and heating companies in Northampton · All trades in Northampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Dmzconstruct Ltd's accounts due?
Dmzconstruct Ltd's next accounts are due at Companies House by 31 May 2028 (in 597 days), covering the period to 31 August 2027.
When is Dmzconstruct Ltd's CT600 due?
The CT600 for the period to 31 August 2027 is due at HMRC by 31 August 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2028.
Is Dmzconstruct Ltd still trading?
Dmzconstruct 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 Dmzconstruct Ltd do?
Dmzconstruct Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Joinery installation (SIC 43320); Painting (SIC 43341).
How old is Dmzconstruct Ltd?
Dmzconstruct Ltd was incorporated on 19 August 2024, 2 years ago.
What is the penalty if Dmzconstruct 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 Dmzconstruct 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.