- Company number
- 16260445
- Incorporated
- 18 Feb 20251 year trading
- Registered office
- 197 Nutwick Road, Havant, PO9 2UL
- Nature of business
- Construction of domestic buildings; Other building completion and finishing
Conmax Ltd is a 1-year-old private limited company registered in Havant, company number 16260445, one of 25 building contractors in Havant. Its next accounts are due at Companies House on 18 November 2026, and its first CT600 is due at HMRC on 17 February 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Financial snapshot, 2026
From the balance sheet at 28 February 2026, as filed at Companies House.
Who runs and owns Conmax Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| C*** M*** | Director | Feb 2025 |
Person with significant control
Where Conmax Ltd is registered
The registered office is in Havant (PO9), in the Havant local authority area, South East. Show PO9 2UL on a map.
Other trade companies in PO9
- Frontline Gas LtdPlumbers and heating engineers
- RLB Building Services LtdFinishing trades
- KS Electrical Contractors LtdElectricians
- Kja-Auditing LtdSpecialist contractors
- Ajl Group LtdBuilders
- Top Premium Hand Car Wash LtdCleaning companies
- Moz-Tec Plastering LtdPlasterers
- MLM Civil Engineering LtdBuilders
What happens if Conmax 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 18 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 Nov 2026 to 18 Dec 2026 | £150 |
| 1 to 3 months late | 19 Dec 2026 to 18 Feb 2027 | £375 |
| 3 to 6 months late | 19 Feb 2027 to 18 May 2027 | £750 |
| More than 6 months late | From 19 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 16260445
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 February 2025 (1 year ago)
- Registered office
- 197 Nutwick Road, Havant, PO9 2UL
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390) - Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 17 February 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 Havant
Other active building contractors registered in Havant.
- Contract Construction Services Limited2006
- Daren Brown Brickwork Limited2002
- Dyn@Mic Developments Ltd2023
- Handy House Solutions Ltd2021
- Hybrid Plumbing & Build Ltd2025
- J M B Groundworks Ltd2023
- JTW.Constructionservices Ltd2025
- Julian Vincent Investments Limited2020
All building contractors in Havant · All trades in Havant · Builders across the UK
Frequently asked questions
When are Conmax Ltd's accounts due?
Conmax Ltd's next accounts are due at Companies House by 18 November 2026 (in 36 days), covering the period to 28 February 2026.
When is Conmax Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 17 February 2026, due by 17 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Conmax Ltd still trading?
Conmax 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 Conmax Ltd do?
Conmax Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390).
How old is Conmax Ltd?
Conmax Ltd was incorporated on 18 February 2025, 1 year ago.
Who runs Conmax Ltd?
Conmax Ltd has 1 active director, the longest-serving appointed in Feb 2025. Their names and service addresses are on the Companies House register.
Who owns Conmax Ltd?
One person or company has significant control of Conmax Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Conmax 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 Conmax 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.