- Companies
- Builders
- Newtownards
- Mawhinney Maintenance & Building Ltd
Mawhinney Maintenance & Building Ltd
- Company number
- NI739570
- Incorporated
- 8 Apr 2026
- Registered office
- 2 Heron Park, Newtownards, BT23 8WJ
- Nature of business
- Construction of domestic buildings; Other building completion and finishing
Mawhinney Maintenance & Building Ltd is a newly incorporated private limited company registered in Newtownards, company number NI739570, one of 52 building contractors in Newtownards. Its next accounts are due at Companies House on 8 January 2028, and its first CT600 is due at HMRC on 7 April 2028.
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.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Mawhinney Maintenance & Building LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where Mawhinney Maintenance & Building Ltd is registered
The registered office is in Newtownards (BT23), in the Ards and North Down local authority area, Northern Ireland. Show BT23 8WJ on a map.
Other trade companies in BT23
- Ards Comber Boiler Services LimitedPlumbers and heating engineers
- B2B Brickwork LtdBuilders
- Paxco LimitedMotor traders
- Valtori LtdMotor traders
- DJH Boiler Services (2026) LtdPlumbers and heating engineers
- SK Motor Trade & Tools LtdMotor traders
- Redline Vehicle Repairs LtdMechanics and garages
- JSW Siphonic Roof Drainage LtdRoofers
What happens if Mawhinney Maintenance & Building 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 8 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 9 Jan 2028 to 8 Feb 2028 | £150 |
| 1 to 3 months late | 9 Feb 2028 to 8 Apr 2028 | £375 |
| 3 to 6 months late | 9 Apr 2028 to 8 Jul 2028 | £750 |
| More than 6 months late | From 9 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- NI739570
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 April 2026
- Registered office
- 2 Heron Park, Newtownards, BT23 8WJ
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390) - Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
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 Newtownards
Other active building contractors registered in Newtownards.
- McCarthy Developments (Portaferry) Ltd.2014
- McCarthy Homes (Portaferry) Ltd.2017
- Nordstead Property Group Limited2026
- North Down Construction Limited1964
- Northern Land Group NI Ltd2015
- O Denvir Construction Ltd2018
- O'Prey Developments Limited2003
- P Lappin Construction Ltd2022
All building contractors in Newtownards · All trades in Newtownards · Builders across the UK
Frequently asked questions
When are Mawhinney Maintenance & Building Ltd's accounts due?
Mawhinney Maintenance & Building Ltd's next accounts are due at Companies House by 8 January 2028 (in 452 days), covering the period to 30 April 2027.
When is Mawhinney Maintenance & Building 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 7 April 2027, due by 7 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mawhinney Maintenance & Building Ltd still trading?
Mawhinney Maintenance & Building 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 Mawhinney Maintenance & Building Ltd do?
Mawhinney Maintenance & Building Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390).
How old is Mawhinney Maintenance & Building Ltd?
Mawhinney Maintenance & Building Ltd was incorporated on 8 April 2026, less than a year ago.
What is the penalty if Mawhinney Maintenance & Building 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 Mawhinney Maintenance & Building 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.