- Company number
- 16255906
- Incorporated
- 17 Feb 20251 year trading
- Registered office
- 11 Frinton Close, Watford, WD19 7QS
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Construction of roads and motorways; Other construction installation
Colossal Builder Ltd is a 1-year-old private limited company registered in Watford, company number 16255906, one of 365 building contractors in Watford. Its next accounts are due at Companies House on 17 November 2026, and its first CT600 is due at HMRC on 16 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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Where Colossal Builder Ltd is registered
The registered office is in Watford (WD19), in the Three Rivers local authority area, East of England. Show WD19 7QS on a map.
Other trade companies in WD19
- DTVM Security Solutions LtdElectricians
- Scenic Plasterwork’S LtdPlasterers
- Terranova Gardens LtdLandscapers and gardeners
- Synclyst LtdCleaning companies
- Hcdbl Group LtdProperty developers
- Primecore Contracts LimitedBuilders
- Kenworx Plumbing & Heating LtdPlumbers and heating engineers
- Adrclim LimitedBuilders
What happens if Colossal Builder 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Nov 2026 to 17 Dec 2026 | £150 |
| 1 to 3 months late | 18 Dec 2026 to 17 Feb 2027 | £375 |
| 3 to 6 months late | 18 Feb 2027 to 17 May 2027 | £750 |
| More than 6 months late | From 18 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
- 16255906
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 February 2025 (1 year ago)
- Registered office
- 11 Frinton Close, Watford, WD19 7QS
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Construction of roads and motorways (SIC 42110)
Other construction installation (SIC 43290) - Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 16 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 Watford
Other active building contractors registered in Watford.
- Complexjr Ltd2024
- Coni London Ltd2011
- Constructions by Mihai Limited2026
- Constructions R Us Ltd2025
- Conversion Concepts Limited2015
- Corra Decorators Ltd2022
- Costell Builders Ltd2026
- CPF Automotive Limited2024
All building contractors in Watford · All trades in Watford · Builders across the UK
Frequently asked questions
When are Colossal Builder Ltd's accounts due?
Colossal Builder Ltd's next accounts are due at Companies House by 17 November 2026 (in 36 days), covering the period to 28 February 2026.
When is Colossal Builder 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 February 2026, due by 16 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 Colossal Builder Ltd still trading?
Colossal Builder 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 Colossal Builder Ltd do?
Colossal Builder Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Construction of roads and motorways (SIC 42110); Other construction installation (SIC 43290).
How old is Colossal Builder Ltd?
Colossal Builder Ltd was incorporated on 17 February 2025, 1 year ago.
What is the penalty if Colossal Builder 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 Colossal Builder 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.