- Companies
- Installers
- London
- Decoline Construction & Maintenance Ltd
Decoline Construction & Maintenance Ltd
- Company number
- 14713513
- Incorporated
- 7 Mar 20233 years trading
- Registered office
- 385 Bury Street West, London, N9 9JR
- Nature of business
- Other construction installation; Plastering; Painting; Other building completion and finishing
Decoline Construction & Maintenance Ltd is a 3-year-old private limited company registered in London, company number 14713513, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 up £34K (+226.4%) on the year before, to £50K.
- Current assets of £54K against £36K owed within a year: 1.5 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £50K | £49K | £54K | £36K | 4 |
| 31 Mar 2025 | £15K | £7,702 | £9,931 | £19K | 3 |
| 31 Mar 2024 | £66 | £28K | £33K | £33K | 3 |
Where Decoline Construction & Maintenance Ltd is registered
The registered office is in London (N9), in the Enfield local authority area, London. Show N9 9JR on a map.
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What happens if Decoline Construction & Maintenance 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 14713513
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 March 2023 (3 years ago)
- Registered office
- 385 Bury Street West, London, N9 9JR
- Nature of business
- Other construction installation (SIC 43290)
Plastering (SIC 43310)
Painting (SIC 43341)
Other building completion and finishing (SIC 43390) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 6 March 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Defro Ltd2016
- Delfi Construction Ltd2020
- Delta Damp Services Ltd2026
- Delta Thermal Ltd2018
- Delux 1 Bathrooms Ltd2024
- Demand&Deliver Ltd2022
- Demax Building Services Ltd2021
- Dennis Coniku Limited2026
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Decoline Construction & Maintenance Ltd's accounts due?
Decoline Construction & Maintenance Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Decoline Construction & Maintenance Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Decoline Construction & Maintenance Ltd still trading?
Decoline Construction & Maintenance 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 Decoline Construction & Maintenance Ltd do?
Decoline Construction & Maintenance Ltd is registered under Other construction installation (SIC 43290); Plastering (SIC 43310); Painting (SIC 43341); Other building completion and finishing (SIC 43390).
How old is Decoline Construction & Maintenance Ltd?
Decoline Construction & Maintenance Ltd was incorporated on 7 March 2023, 3 years ago.
What is the penalty if Decoline Construction & Maintenance 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 Decoline Construction & Maintenance 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.