- Company number
- NI735661
- Incorporated
- 22 Nov 2025
- Registered office
- 134 Andersonstown Road, Belfast, BT11 9BY
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Roundtree Construction Ltd is a newly incorporated private limited company registered in Belfast, company number NI735661, one of 213 building contractors in Belfast. Its next accounts are due at Companies House on 22 August 2027, and its first CT600 is due at HMRC on 21 November 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 Roundtree Construction Ltd is registered
The registered office is in Belfast (BT11), in the Belfast local authority area, Northern Ireland. Show BT11 9BY on a map.
Other trade companies in BT11
- Belfast Building Company LtdBuilders
- A1 Specialist Property Management LtdSpecialist contractors
- McQuaid Electrical Contractors LimitedElectricians
- McCann Bricklaying LtdBuilders
- Msab LtdCivil engineering
- Arrk Electrical LtdElectricians
- Gowdy Plaster Boarding LtdFloor and wall tilers
- Flooringxtra LtdFloor and wall tilers
Also registered at this address
3 other companies use the same registered office as Roundtree Construction Ltd.
- Ballydownfine Developments LtdProperty developers
- JML Contract Services LimitedBuilders
- JML Homes LimitedProperty developers
What happens if Roundtree Construction 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 22 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Aug 2027 to 22 Sep 2027 | £150 |
| 1 to 3 months late | 23 Sep 2027 to 22 Nov 2027 | £375 |
| 3 to 6 months late | 23 Nov 2027 to 22 Feb 2028 | £750 |
| More than 6 months late | From 23 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- NI735661
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 November 2025
- Registered office
- 134 Andersonstown Road, Belfast, BT11 9BY
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 3 January 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 Belfast
Other active building contractors registered in Belfast.
- RRN Construction Ltd2020
- RSW Building Limited2016
- Rubyann (Kircubbin) Ltd2025
- RWC Contracts Ltd1999
- S J Walsh & Sons Ltd2014
- S&N Bricklaying Limited2019
- Sarcon (No. 251) Limited2007
- Scottsboro Limited2015
All building contractors in Belfast · All trades in Belfast · Builders across the UK
Frequently asked questions
When are Roundtree Construction Ltd's accounts due?
Roundtree Construction Ltd's next accounts are due at Companies House by 22 August 2027 (in 314 days), covering the period to 30 November 2026.
When is Roundtree Construction 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 21 November 2026, due by 21 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Roundtree Construction Ltd still trading?
Roundtree Construction 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 Roundtree Construction Ltd do?
Roundtree Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Roundtree Construction Ltd?
Roundtree Construction Ltd was incorporated on 22 November 2025, less than a year ago.
What is the penalty if Roundtree Construction 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 Roundtree Construction 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.