- Company number
- 12962518
- Incorporated
- 20 Oct 20205 years trading
- Registered office
- 19 Trinity Square, Llandudno, Conwy, LL30 2RD
- Nature of business
- Construction of domestic buildings
Watertight Building & Roofing Limited is a 5-year-old private limited company registered in Llandudno, company number 12962518, one of 16 building contractors in Llandudno. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 down £35K (-149%) on the year before, to -£11K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £7,248 against £119K owed within a year: 0.1 times cover.
- 2 employees on average, up from 0 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | -£11K | £7,248 | £119K | 2 | |
| 31 Oct 2024 | £23K | £12K | £76K | 0 | |
| 31 Oct 2023 | £38K | £23K | £8,455 | 0 | |
| 31 Oct 2022 | £100 | 0 | |||
| 31 Oct 2021 | £100 | 0 |
Where Watertight Building & Roofing Limited is registered
The registered office is in Llandudno (LL30), in the Conwy local authority area, Wales. Show LL30 2RD on a map.
Other trade companies in LL30
- Apegg HV Solutions LtdCivil engineering
- SNS Bathrooms LtdFinishing trades
- Caithness Construction LtdBuilders
- Africraft and Co LimitedMotor traders
- Orme View Group LtdProperty developers
- T.Lundstram Roofing and Property Maintenance LtdSpecialist contractors
- Rhidan Homes LtdProperty developers
- Lej Electrical LtdElectricians
Also registered at this address
20 other companies use the same registered office as Watertight Building & Roofing Limited.
- 4 Smart (Cheltenham) LimitedMechanics and garages
- A Toner LimitedFloor and wall tilers
- Accurate Roofing (Wales) LimitedRoofers
- Amaeth Hafod LimitedMachinery repair and installation
- Apr Heating LimitedPlumbers and heating engineers
- Ay Rooflines LimitedFinishing trades
- C Tile LimitedFloor and wall tilers
- Dragon Roofing & Scaffolding LimitedBuilders
- Faenol Garage LimitedMotor traders
- Interior Renovations LimitedElectricians
- M Beck Site Services LimitedCivil engineering
- M E Contractors LimitedRoofers
- Moore Car Sales LimitedMotor traders
- Park View Garage (Lloc) LimitedMechanics and garages
- Razor Utility & Construction LimitedBuilders
- Reece Construction LimitedProperty developers
- RPC Roofing LimitedRoofers
- Smokey O'Connor's LimitedBuilders
- Steven Winstanley LimitedRoofers
- The DIY School Training LimitedProperty developers
What happens if Watertight Building & Roofing Limited 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 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
- 12962518
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 October 2020 (5 years ago)
- Registered office
- 19 Trinity Square, Llandudno, Conwy, LL30 2RD
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 19 October 2025
- Previous names
- DJ Builders & Joinery Limited (until 14 Oct 2022)
DJ Developments (NW) Limited (until 1 Dec 2020)
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 Llandudno
Other active building contractors registered in Llandudno.
- WD Roberts Joinery Ltd2025
- Caithness Construction Ltd2026
- D&G Building Contractors Limited2001
- Direct Developments & Construction Ltd2024
- Dragon Roofing & Scaffolding Limited2021
- JP Developments NW Ltd2023
- MSJ Projects NW Ltd2025
- Probuild Enterprises Limited2023
All building contractors in Llandudno · All trades in Llandudno · Builders across the UK
Frequently asked questions
When are Watertight Building & Roofing Limited's accounts due?
Watertight Building & Roofing Limited's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Watertight Building & Roofing Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Watertight Building & Roofing Limited still trading?
Watertight Building & Roofing Limited 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 Watertight Building & Roofing Limited do?
Watertight Building & Roofing Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Watertight Building & Roofing Limited?
Watertight Building & Roofing Limited was incorporated on 20 October 2020, 5 years ago.
What is the penalty if Watertight Building & Roofing Limited 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 Watertight Building & Roofing Limited 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.