- Companies
- Builders
- Waltham Cross
- Mars Building Group Ltd
Mars Building Group Ltd
- Company number
- 13150845
- Incorporated
- 21 Jan 20215 years trading
- Registered office
- Hatton House Church Lane, Cheshunt, Waltham Cross, EN8 0DW
- Nature of business
- Construction of domestic buildings
Mars Building Group Ltd is a 5-year-old private limited company registered in Waltham Cross, company number 13150845, one of 174 building contractors in Waltham Cross. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 March 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 £47K (+329.7%) on the year before, to £61K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £167K against £184K owed within a year: 0.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £61K | £167K | £184K | 2 | |
| 31 Mar 2024 | £14K | £41K | £128K | 2 | |
| 31 Mar 2023 | £32K | £36K | £68K | 2 | |
| 31 Mar 2022 | £68K | £27K | £17K | 1 |
Where Mars Building Group Ltd is registered
The registered office is in Waltham Cross (EN8), in the Broxbourne local authority area, East of England. Show EN8 0DW on a map.
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Also registered at this address
3 other companies use the same registered office as Mars Building Group Ltd.
- All Type Construction Services LtdBuilders
- Lamberts Cleaning Services LtdCleaning companies
- Marketly LtdProperty developers
What happens if Mars Building Group 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Mar 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Mar 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
- 13150845
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 January 2021 (5 years ago)
- Registered office
- Hatton House Church Lane, Cheshunt, Waltham Cross, EN8 0DW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 20 January 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 Waltham Cross
Other active building contractors registered in Waltham Cross.
- Merry Gardens Developments Limited2023
- MGH Skyline Build Ltd2026
- Mitu Costruct Ltd2021
- MK Access Scaffolding Limited2016
- Mol Construct Ltd2024
- Mso Woodland Limited2025
- MT Brickpro Ltd2025
- MTS Construction Limited2024
All building contractors in Waltham Cross · All trades in Waltham Cross · Builders across the UK
Frequently asked questions
When are Mars Building Group Ltd's accounts due?
Mars Building Group Ltd's next accounts are due at Companies House by 30 December 2026 (in 79 days), covering the period to 30 March 2026.
When is Mars Building Group Ltd's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Mars Building Group Ltd still trading?
Mars Building Group 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 Mars Building Group Ltd do?
Mars Building Group Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Mars Building Group Ltd?
Mars Building Group Ltd was incorporated on 21 January 2021, 5 years ago.
What is the penalty if Mars Building Group 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 Mars Building Group 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.