- Company number
- NI602612
- Incorporated
- 24 Mar 201016 years trading
- Registered office
- 2 Killycolp Road, Cookstown, Tyrone, BT80 9AD
- Nature of business
- Construction of commercial buildings
Martin Developments (Castlederg) Limited is a 16-year-old private limited company registered in Cookstown, company number NI602612, one of 40 building contractors in Cookstown. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 unchanged on the year before, at -£2,359.
- Net assets rose in 1 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£2,359 | £140K | 0 | ||
| 31 Mar 2024 | -£2,359 | £140K | 0 | ||
| 31 Mar 2023 | -£2,359 | £140K | 0 | ||
| 31 Mar 2022 | £2,359 | £140K | £142K | 0 | |
| 31 Mar 2021 | £2,359 | £140K | £142K | 0 | |
| 31 Mar 2020 | £2,359 | £140K | £142K | 0 | |
| 31 Mar 2019 | £2,359 | £140K | £142K | ||
| 31 Mar 2018 | £2,359 | £140K | £142K | ||
| 31 Mar 2017 | -£2,359 | £0 | £152K | ||
| 31 Mar 2016 | -£2,359 | £0 | £150K | £152K |
Where Martin Developments (Castlederg) Limited is registered
The registered office is in Cookstown (BT80), in the Mid Ulster local authority area, Northern Ireland. Show BT80 9AD on a map.
Other trade companies in BT80
- GMB Plant & Machine Repairs LtdMachinery repair and installation
- Il Contracts LimitedCivil engineering
- Neeson Environmental LtdGroundworks and demolition
- Molloys Tyres LimitedMotor traders
- Girvan Utility Services LtdCivil engineering
- C Rafferty Construction LtdCivil engineering
- Keldev LtdProperty developers
- MD Construction and Building LtdBuilders
Also registered at this address
1 other company uses the same registered office as Martin Developments (Castlederg) Limited.
- Mill Dam Developments LimitedBuilders
What happens if Martin Developments (Castlederg) 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- NI602612
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 March 2010 (16 years ago)
- Registered office
- 2 Killycolp Road, Cookstown, Tyrone, BT80 9AD
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 18 March 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 Cookstown
Other active building contractors registered in Cookstown.
- Maste Properties Limited2013
- McGarrity Contracts Ltd2016
- MD Construction and Building Ltd2026
- Mill Dam Developments Limited2010
- Moss Developers Limited2011
- PVC Windows Spares and Repairs Ltd2025
- Rea Developments Cookstown Limited2006
- Reagalmac Limited1985
All building contractors in Cookstown · All trades in Cookstown · Builders across the UK
Frequently asked questions
When are Martin Developments (Castlederg) Limited's accounts due?
Martin Developments (Castlederg) Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Martin Developments (Castlederg) Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Martin Developments (Castlederg) Limited still trading?
Martin Developments (Castlederg) 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 Martin Developments (Castlederg) Limited do?
Martin Developments (Castlederg) Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Martin Developments (Castlederg) Limited?
Martin Developments (Castlederg) Limited was incorporated on 24 March 2010, 16 years ago.
What is the penalty if Martin Developments (Castlederg) 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 Martin Developments (Castlederg) 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.