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- Mad Developments and Construction Ltd
Company profile · Builders
Mad Developments and Construction Ltd
Mad Developments and Construction Ltd is a newly incorporated private limited company registered in Merthyr Tydfil, company number 17031594, one of 39 building contractors in Merthyr Tydfil. Its next accounts are due at Companies House on 13 November 2027, and its first CT600 is due at HMRC on 12 February 2028.
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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Who runs and owns Mad Developments and Construction Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| S*** J*** | Director | Feb 2026 |
| W*** M*** | Director | Feb 2026 |
People with significant control (2)
Where Mad Developments and Construction Ltd is registered
The registered office is in Merthyr Tydfil (CF47), in the Merthyr Tydfil local authority area, Wales. Show CF47 8PE on a map.
Other trade companies in CF47
- Rji Services LtdMechanics and garages
- R&P Motor Services LtdMechanics and garages
- Grain and Groove Carpentry LtdJoiners and carpenters
- Nextnest Properties LimitedProperty developers
- Frontier Power Solutions LtdElectricians
- Jude Developments LtdProperty developers
- Taff Group Property Services LtdPainters and decorators
- Anew Energy LimitedPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Mad Developments and Construction Ltd.
- Platinum Car Sales LtdMotor traders
What happens if Mad Developments and 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 13 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Nov 2027 to 13 Dec 2027 | £150 |
| 1 to 3 months late | 14 Dec 2027 to 13 Feb 2028 | £375 |
| 3 to 6 months late | 14 Feb 2028 to 13 May 2028 | £750 |
| More than 6 months late | From 14 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 17031594
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 February 2026
- Registered office
- Unit 1B, Cyfarthfa Industrial Estate, Merthyr Tydfil, CF47 8PE
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 28 February (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 Merthyr Tydfil
Other active building contractors registered in Merthyr Tydfil.
- Maple Leaf Design & Build Ltd2026
- Matcon Civil Engineering Ltd2010
- Maxiom Construction Limited2005
- MGR Civils Ltd2020
- Price Home Developments Limited2023
- Price Pro-Construct Limited2020
- RD Construction & Maintenance Ltd2018
- Ridgestone Construction Ltd.2012
All building contractors in Merthyr Tydfil · All trades in Merthyr Tydfil · Builders across the UK
Frequently asked questions
When are Mad Developments and Construction Ltd's accounts due?
Mad Developments and Construction Ltd's next accounts are due at Companies House by 13 November 2027 (in 397 days), covering the period to 28 February 2027.
When is Mad Developments and 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 12 February 2027, due by 12 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mad Developments and Construction Ltd still trading?
Mad Developments and 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 Mad Developments and Construction Ltd do?
Mad Developments and Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Mad Developments and Construction Ltd?
Mad Developments and Construction Ltd was incorporated on 13 February 2026, less than a year ago.
Who runs Mad Developments and Construction Ltd?
Mad Developments and Construction Ltd has 2 active directors, the longest-serving appointed in Feb 2026. Their names and service addresses are on the Companies House register.
Who owns Mad Developments and Construction Ltd?
2 people or companies have significant control of Mad Developments and Construction Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 75% or more of the shares).
What is the penalty if Mad Developments and 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 Mad Developments and Construction Ltd on Companies House for filed documents, officers and the full history.
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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.