- Companies
- Builders
- Londonderry
- DCN Civils Limited
DCN Civils Limited
- Company number
- NI659457
- Incorporated
- 1 Mar 20197 years trading
- Registered office
- 8 Altnafoyle, Londonderry, BT48 0FG
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Construction of other civil engineering projects n.e.c.
DCN Civils Limited is a 7-year-old private limited company registered in Londonderry, company number NI659457, one of 95 building contractors in Londonderry. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £8,024 (-31.6%) on the year before, to £17K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £77K against £50K owed within a year: 1.5 times cover.
- 3 employees on average, up from 1 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £17K | £77K | £50K | 3 | |
| 31 Jul 2024 | £25K | £82K | £35K | 1 | |
| 31 Jul 2023 | £4,887 | £44K | £30K | 1 | |
| 31 Jul 2022 | £2,546 | £32K | £6,371 | 1 | |
| 31 Jul 2021 | £100 | £12K | £2,700 | 1 | |
| 31 Jul 2020 | £100 | £10K | £0 | 1 |
Where DCN Civils Limited is registered
The registered office is in Londonderry (BT48), in the Derry City and Strabane local authority area, Northern Ireland. Show BT48 0FG on a map.
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What happens if DCN Civils 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- NI659457
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 March 2019 (7 years ago)
- Registered office
- 8 Altnafoyle, Londonderry, BT48 0FG
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 12 March 2026
- Previous names
- DNC Civils Limited (until 12 Mar 2019)
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 Londonderry
Other active building contractors registered in Londonderry.
- Dencro Contracts Limited2010
- DM Solutions Ireland Limited2025
- Dmccr Limited2013
- Doc Drylining Limited2011
- Donaghy Joinery Limited2020
- Errigal Homes Limited2022
- Faughanside Construction Ltd2024
- Ferm Construction Ltd2007
All building contractors in Londonderry · All trades in Londonderry · Builders across the UK
Frequently asked questions
When are DCN Civils Limited's accounts due?
DCN Civils Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is DCN Civils Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is DCN Civils Limited still trading?
DCN Civils 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 DCN Civils Limited do?
DCN Civils Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is DCN Civils Limited?
DCN Civils Limited was incorporated on 1 March 2019, 7 years ago.
What is the penalty if DCN Civils 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 DCN Civils 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.