- Company number
- 16792496
- Incorporated
- 17 Oct 2025
- Registered office
- Unit 24, Parham Drive, Eastleigh, Hampshire, SO50 4NU
- Nature of business
- Construction of commercial buildings
Kalmont Construction Ltd is a newly incorporated private limited company registered in Eastleigh, company number 16792496, one of 89 building contractors in Eastleigh. Its next accounts are due at Companies House on 17 July 2027, and its first CT600 is due at HMRC on 16 October 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.
Is this your company?
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Where Kalmont Construction Ltd is registered
The registered office is in Eastleigh (SO50), in the Eastleigh local authority area, South East. Show SO50 4NU on a map.
Other trade companies in SO50
- Chevron Homes LimitedBuilders
- Plymouth Construction & Roofing LtdRoofers
- Marley Roofing and Guttering LtdRoofers
- Gutter and Glass LimitedCleaning companies
- Zap Clean Systems LimitedCleaning companies
- Pro Spray Hampshire LtdPainters and decorators
- National Trusted Vehicles LtdMotor traders
- Kuji Service LtdMachinery repair and installation
What happens if Kalmont Construction 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 17 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Jul 2027 to 17 Aug 2027 | £150 |
| 1 to 3 months late | 18 Aug 2027 to 17 Oct 2027 | £375 |
| 3 to 6 months late | 18 Oct 2027 to 17 Jan 2028 | £750 |
| More than 6 months late | From 18 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16792496
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 October 2025
- Registered office
- Unit 24, Parham Drive, Eastleigh, Hampshire, SO50 4NU
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
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 Eastleigh
Other active building contractors registered in Eastleigh.
- Kdy Constructions Ltd2026
- KKM World Ltd2026
- Ladycroft Farm Ltd2025
- Lekh Construction and Building Management Services Ltd2020
- Lighthouse Construction (Southern) Limited2024
- LJS Developments Limited2017
- Lodge & Keep Construction Ltd2018
- Lonmer Construction Limited2013
All building contractors in Eastleigh · All trades in Eastleigh · Builders across the UK
Frequently asked questions
When are Kalmont Construction Ltd's accounts due?
Kalmont Construction Ltd's next accounts are due at Companies House by 17 July 2027 (in 277 days), covering the period to 31 October 2026.
When is Kalmont Construction 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 16 October 2026, due by 16 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Kalmont Construction Ltd still trading?
Kalmont Construction 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 Kalmont Construction Ltd do?
Kalmont Construction Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is Kalmont Construction Ltd?
Kalmont Construction Ltd was incorporated on 17 October 2025, less than a year ago.
What is the penalty if Kalmont Construction 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 Kalmont Construction 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.