- Companies
- Specialist contractors
- Dartford
- Opus Waterproofing Solutions Limited
Opus Waterproofing Solutions Limited
- Company number
- 05306598
- Incorporated
- 7 Dec 200421 years trading
- Registered office
- Kelley & Lowe Limited Gwynfa House, 677 Princes Road, Dartford, Kent, DA2 6EF
- Nature of business
- Other specialised construction activities n.e.c.
Opus Waterproofing Solutions Limited is a 21-year-old private limited company registered in Dartford, company number 05306598, one of 151 specialist construction companies in Dartford. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 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 down £1.4M (-35.3%) on the year before, to £2.5M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £4.6M against £2.2M owed within a year: 2.1 times cover.
- 15 employees on average, up from 10 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £2.5M | £41K | £4.6M | £2.2M | 15 |
| 31 Mar 2024 | £3.8M | £699K | £5.8M | £2.1M | 10 |
| 31 Mar 2023 | £1.8M | £483K | £4.1M | £2.4M | 4 |
| 31 Mar 2022 | £2.2M | £316K | £6.8M | £4.6M | 4 |
| 31 Mar 2021 | £686K | £320K | £2.9M | £2.2M | 4 |
| 31 Mar 2020 | £433K | £415K | £3.9M | £3.5M | 4 |
| 31 Mar 2019 | £347K | £690K | £4.3M | £4M | 4 |
| 31 Mar 2018 | £202K | £356K | £4.2M | £4M | |
| 31 Mar 2017 | £226K | £158K | £3.3M | £3.1M | 4 |
| 31 Mar 2016 | £19K | £19K | £1.7M | £1.7M |
Public contracts won
Opus Waterproofing Solutions Limited has 5 public sector contract awards on record; the ones with their own published value total £978K, from 2021 to 2025. Source: Contracts Finder and Find a Tender award notices. For 2 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. 2 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- London Borough of Haringey2 awards
- LHC Procurement Group1 award
- Homes for Haringey1 award
- LHC on behalf of the Welsh Procurement Alliance (WPA)1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| LHC Procurement Group | Roofing Services & Associated Works | Ceiling, not shown | 14 Oct 2025 |
| London Borough of Haringey | Roofing miscellaneous (20% VAT) | £455K | 21 Oct 2021 |
| London Borough of Haringey | Roofing - Roofing miscellaneous (20% VAT) | £455K | 24 Aug 2021 |
| Homes for Haringey | Roofing - Asphalt roofing (20% VAT) | £68K | 24 May 2021 |
| LHC on behalf of the Welsh Procurement Alliance (WPA) | Design, Supply and Installation of Roofing and Associated Works | Ceiling, not shown | 11 May 2021 |
Where Opus Waterproofing Solutions Limited is registered
The registered office is in Dartford (DA2), in the Dartford local authority area, South East. Show DA2 6EF on a map.
Other trade companies in DA2
- Alija Construction LtdBuilders
- P&E Premier Holdings LimitedProperty developers
- MCP Motors LtdMechanics and garages
- Lude LtdFinishing trades
- Netti's Cleaning LtdCleaning companies
- Inspired Gardens & Landscapes Kent LtdLandscapers and gardeners
- Elite FM LimitedFacilities management
- Cleansl8 LtdCleaning companies
What happens if Opus Waterproofing Solutions 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 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 | 1 Apr 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 | 31 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
- 05306598
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 December 2004 (21 years ago)
- Registered office
- Kelley & Lowe Limited Gwynfa House, 677 Princes Road, Dartford, Kent, DA2 6EF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 31 July 2026
- Charges (mortgages)
- 0 outstanding of 2 registered
- Previous names
- S P Building Contractors Limited (until 23 Mar 2012)
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Dartford
Other active specialist construction companies registered in Dartford.
- P & A Management Services Ltd2015
- Playcubed Ltd2022
- Ppenev Ltd2020
- Prime Kitchen & Bathrooms Ltd2025
- PRN Pumps Ltd2026
- Pro-Fix Property Solutions Ltd2026
- Rams Elevators Ltd2024
- Rapid Design and Build Ltd2023
All specialist construction companies in Dartford · All trades in Dartford · Specialist contractors across the UK
Frequently asked questions
When are Opus Waterproofing Solutions Limited's accounts due?
Opus Waterproofing Solutions Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Opus Waterproofing Solutions Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Opus Waterproofing Solutions Limited still trading?
Opus Waterproofing Solutions 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 Opus Waterproofing Solutions Limited do?
Opus Waterproofing Solutions Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Opus Waterproofing Solutions Limited?
Opus Waterproofing Solutions Limited was incorporated on 7 December 2004, 21 years ago.
Has Opus Waterproofing Solutions Limited won public sector contracts?
Yes. Opus Waterproofing Solutions Limited has 5 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £978K), most recently from LHC Procurement Group.
What is the penalty if Opus Waterproofing Solutions 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 Opus Waterproofing Solutions 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.