- Companies
- Builders
- St Austell
- Waterproofing Cornwall Ltd
Waterproofing Cornwall Ltd
- Company number
- 16693106
- Incorporated
- 3 Sep 20251 year trading
- Registered office
- 2 Westbridge Road, Trewoon, St Austell, PL25 5TE
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Waterproofing Cornwall Ltd is a 1-year-old private limited company registered in St Austell, company number 16693106, one of 47 building contractors in St Austell. Its next accounts are due at Companies House on 3 June 2027, and its first CT600 is due at HMRC on 2 September 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 Waterproofing Cornwall Ltd is registered
The registered office is in St Austell (PL25), in the Cornwall local authority area, South West. Show PL25 5TE on a map.
Other trade companies in PL25
- Platinum Window Care LimitedCleaning companies
- Aspire Land Property LimitedProperty developers
- Kernow Property Portfolio LtdProperty developers
- Bould Landscapes LimitedLandscapers and gardeners
- Rustic Homes LtdProperty developers
- Rustic Property LtdProperty developers
- Balustrade Solutions Cornwall LimitedInstallers
- R&L Developments Group LtdBuilders
Also registered at this address
1 other company uses the same registered office as Waterproofing Cornwall Ltd.
- Artistic Tiling LimitedFloor and wall tilers
What happens if Waterproofing Cornwall 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 3 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Jun 2027 to 3 Jul 2027 | £150 |
| 1 to 3 months late | 4 Jul 2027 to 3 Sep 2027 | £375 |
| 3 to 6 months late | 4 Sep 2027 to 3 Dec 2027 | £750 |
| More than 6 months late | From 4 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16693106
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 September 2025 (1 year ago)
- Registered office
- 2 Westbridge Road, Trewoon, St Austell, PL25 5TE
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 2 September 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 St Austell
Other active building contractors registered in St Austell.
- Avant Garde Homes Limited2021
- Blustone Limited2022
- BR Construction (SW) Ltd2024
- Brandon Eva Construction Limited2024
- Bunney Building Services Limited2013
- CCM Construction SW Ltd2022
- Colvin Builders Ltd2013
- Cornwall Construction Limited2024
All building contractors in St Austell · All trades in St Austell · Builders across the UK
Frequently asked questions
When are Waterproofing Cornwall Ltd's accounts due?
Waterproofing Cornwall Ltd's next accounts are due at Companies House by 3 June 2027 (in 233 days), covering the period to 30 September 2026.
When is Waterproofing Cornwall 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 2 September 2026, due by 2 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Waterproofing Cornwall Ltd still trading?
Waterproofing Cornwall 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 Waterproofing Cornwall Ltd do?
Waterproofing Cornwall Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Waterproofing Cornwall Ltd?
Waterproofing Cornwall Ltd was incorporated on 3 September 2025, 1 year ago.
What is the penalty if Waterproofing Cornwall 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 Waterproofing Cornwall 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.