- Companies
- Civil engineering
- Basildon
- Construction Sealants Limited
Construction Sealants Limited
- Company number
- 02515979
- Incorporated
- 26 Jun 199036 years trading
- Registered office
- 40 Hemmells, Laindon North Industrial Estate, Basildon, Essex, SS15 6ED
- Nature of business
- Construction of utility projects for fluids
Construction Sealants Limited is a 36-year-old private limited company registered in Basildon, company number 02515979, one of 78 civil engineering contractors in Basildon. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £120K (-5.6%) on the year before, to £2M.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £393K owed within a year: 3.9 times cover.
- 24 employees on average, down from 25 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £2M | £310K | £1.5M | £393K | 24 |
| 30 Sep 2024 | £2.1M | £460K | £1.8M | £456K | 25 |
| 30 Sep 2023 | £2.1M | £578K | £2.1M | £467K | 25 |
| 30 Sep 2022 | £2.1M | £586K | £2.2M | £499K | 26 |
| 30 Sep 2021 | £2M | £686K | £2.1M | £470K | 28 |
| 30 Sep 2020 | £1.8M | £669K | £2.1M | £755K | 29 |
| 30 Sep 2019 | £1.6M | £239K | £1.7M | £436K | 28 |
| 30 Sep 2018 | £1.5M | £199K | £1.5M | £507K | 26 |
| 30 Sep 2017 | £1.4M | £149K | £1.5M | £532K | 30 |
| 30 Sep 2016 | £1.4M | £217K | £1.5M | £649K |
Where Construction Sealants Limited is registered
The registered office is in Basildon (SS15), in the Basildon local authority area, East of England. Show SS15 6ED on a map.
Other trade companies in SS15
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- Lilley Build LtdPlasterers
- Timber Glazing Solutions LtdJoiners and carpenters
- Sashbespoke LtdJoiners and carpenters
- Hailsham Estate LtdProperty developers
- Mawhood Asbestos Contracts LtdGroundworks and demolition
- C.V Carpenter LtdBuilders
- Voltcert LtdElectricians
Also registered at this address
2 other companies use the same registered office as Construction Sealants Limited.
- CSL Racing LimitedSpecialist contractors
- Techraseal LtdSpecialist contractors
What happens if Construction Sealants 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £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
- 02515979
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 June 1990 (36 years ago)
- Registered office
- 40 Hemmells, Laindon North Industrial Estate, Basildon, Essex, SS15 6ED
- Nature of business
- Construction of utility projects for fluids (SIC 42210)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 26 June 2026
- Charges (mortgages)
- 1 outstanding of 13 registered
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Basildon
Other active civil engineering contractors registered in Basildon.
- D & D Rail Limited2003
- Daily Site Managing Services Limited2015
- DC Plus Utility Ltd2024
- Driscoll Building Services Limited2005
- DSP Rail & Civils Ltd2022
- Eddie James TM Ltd2023
- Essex Utility Surveys Ltd2026
- Eze Quality Services Ltd2023
All civil engineering contractors in Basildon · All trades in Basildon · Civil engineering across the UK
Frequently asked questions
When are Construction Sealants Limited's accounts due?
Construction Sealants Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Construction Sealants Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Construction Sealants Limited still trading?
Construction Sealants 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 Construction Sealants Limited do?
Construction Sealants Limited is registered under Construction of utility projects for fluids (SIC 42210).
How old is Construction Sealants Limited?
Construction Sealants Limited was incorporated on 26 June 1990, 36 years ago.
What is the penalty if Construction Sealants 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 Construction Sealants 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.