- Companies
- Builders
- Castlewellan
- CMC Surfacing & Groundwork Ltd
CMC Surfacing & Groundwork Ltd
- Company number
- NI729795
- Incorporated
- 27 May 20251 year trading
- Registered office
- 16 Upper Square, Castlewellan, BT31 9DD
- Nature of business
- Construction of domestic buildings
CMC Surfacing & Groundwork Ltd is a 1-year-old private limited company registered in Castlewellan, company number NI729795, one of 29 building contractors in Castlewellan. Its next accounts are due at Companies House on 27 February 2027, and its first CT600 is due at HMRC on 26 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where CMC Surfacing & Groundwork Ltd is registered
The registered office is in Castlewellan (BT31), in the Newry, Mourne and Down local authority area, Northern Ireland. Show BT31 9DD on a map.
Other trade companies in BT31
- Ogm26 LtdGroundworks and demolition
- Treadline Tyre & Auto Services LtdMechanics and garages
- CB Fire Compliance LimitedSpecialist contractors
- Cea Joinery LtdJoiners and carpenters
- NI.CBR LtdMechanics and garages
- S.D.E Electrical Systems LtdElectricians
- Jam Civils & Utilities LtdGroundworks and demolition
- B McVeigh Mechanical LtdPlumbers and heating engineers
Also registered at this address
18 other companies use the same registered office as CMC Surfacing & Groundwork Ltd.
- Agd Plumbing & Heating LtdPlumbers and heating engineers
- B R Building & Joinery LimitedFinishing trades
- Cea Joinery LtdJoiners and carpenters
- Cisco Plumbing & Heating LtdPlumbers and heating engineers
- Clonkeel Joinery LtdProperty developers
- Construction Sealants (Ireland) LtdSpecialist contractors
- Echo Direct Construction LtdBuilders
- Jam Civils & Utilities LtdGroundworks and demolition
- Kelly New Homes LimitedBuilders
- KP Civil LtdGroundworks and demolition
- Mark Gallagher Building LtdBuilders
- Matthews Electrical Services (N.I.) LimitedElectricians
- MJD Building LtdBuilders
- Morgan Plumbing Services LtdPlumbers and heating engineers
- PDM Plumbing Services LtdPlumbers and heating engineers
- RW Carpentry & Construction LtdJoiners and carpenters
- S.D.E Electrical Systems LtdElectricians
- Seac Electrical LtdElectricians
What happens if CMC Surfacing & Groundwork 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 27 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Feb 2027 to 27 Mar 2027 | £150 |
| 1 to 3 months late | 28 Mar 2027 to 27 May 2027 | £375 |
| 3 to 6 months late | 28 May 2027 to 27 Aug 2027 | £750 |
| More than 6 months late | From 28 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- NI729795
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 May 2025 (1 year ago)
- Registered office
- 16 Upper Square, Castlewellan, BT31 9DD
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 26 May 2026
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 Castlewellan
Other active building contractors registered in Castlewellan.
- DB Building & Joinery Ltd2020
- Echo Direct Construction Ltd2024
- Eor Builders Ltd2007
- Go Rock Construction Ltd2006
- Golf Sims Ireland Limited2025
- John McCartan Limited2007
- KCD Homes Limited2004
- Kelly New Homes Limited2001
All building contractors in Castlewellan · All trades in Castlewellan · Builders across the UK
Frequently asked questions
When are CMC Surfacing & Groundwork Ltd's accounts due?
CMC Surfacing & Groundwork Ltd's next accounts are due at Companies House by 27 February 2027 (in 137 days), covering the period to 31 May 2026.
When is CMC Surfacing & Groundwork Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 26 May 2026, due by 26 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is CMC Surfacing & Groundwork Ltd still trading?
CMC Surfacing & Groundwork 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 CMC Surfacing & Groundwork Ltd do?
CMC Surfacing & Groundwork Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is CMC Surfacing & Groundwork Ltd?
CMC Surfacing & Groundwork Ltd was incorporated on 27 May 2025, 1 year ago.
What is the penalty if CMC Surfacing & Groundwork 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 CMC Surfacing & Groundwork 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.