- Companies
- Property developers
- Larne
- Rathmore Developments Ltd
Rathmore Developments Ltd
- Company number
- NI647966
- Incorporated
- 12 Sep 20179 years trading
- Registered office
- 10A Upper Cairncastle Road, Larne, BT40 2DT
- Nature of business
- Development of building projects; Buying and selling of own real estate; Other letting and operating of own or leased real estate; Management of real estate on a fee or contract basis
Rathmore Developments Ltd is a 9-year-old private limited company registered in Larne, company number NI647966, one of 15 property development companies in Larne. Companies House shows its accounts as overdue: they were due on 30 September 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the 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 Rathmore Developments 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.
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 up £3,414 (+27%) on the year before, to £16K.
- Net assets rose in 4 of 6 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 7 years, 2018 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2024 | £16K | £16K | £0 | 0 | |
| 30 Sep 2023 | £13K | £13K | 0 | ||
| 30 Sep 2022 | £9,225 | £9,224 | 0 | ||
| 30 Sep 2021 | £4,334 | £4,333 | £0 | 0 | |
| 30 Sep 2020 | £1 | 0 | |||
| 30 Sep 2019 | £1 | 0 | |||
| 30 Sep 2018 | £1 |
Where Rathmore Developments Ltd is registered
The registered office is in Larne (BT40), in the Mid and East Antrim local authority area, Northern Ireland. Show BT40 2DT on a map.
Other trade companies in BT40
- GW Home Improvements and Maintenance LtdBuilders
- East Coast Contracting NI LtdBuilders
- Abbey Washing Machines LtdRepair services
- CM Fit Out & Construction LtdJoiners and carpenters
- Blackwood & Crawford LtdProperty developers
- TT Tiling LtdFloor and wall tilers
- JM Servicess LtdSpecialist contractors
- NPH Heating and Plumbing LtdPlumbers and heating engineers
What happens if Rathmore Developments Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- NI647966
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 September 2017 (9 years ago)
- Registered office
- 10A Upper Cairncastle Road, Larne, BT40 2DT
- Nature of business
- Development of building projects (SIC 41100)
Buying and selling of own real estate (SIC 68100)
Other letting and operating of own or leased real estate (SIC 68209)
Management of real estate on a fee or contract basis (SIC 68320) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2024
- Last confirmation statement
- 11 September 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Larne
Other active property development companies registered in Larne.
- Sdsa Holdings Ltd2025
- Shore Coast Developments Ltd2023
- SJM Property Developers Ltd2013
- Tureagh Properties Ltd2026
- Ur Developments (Erskine) Ltd2017
- Barclay Building Construction Ltd2018
- Bayshore Homes Limited2010
- Blackwood & Crawford Ltd2026
All property development companies in Larne · All trades in Larne · Property developers across the UK
Frequently asked questions
When are Rathmore Developments Ltd's accounts due?
Rathmore Developments Ltd's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Rathmore Developments 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 30 September 2025, due by 30 September 2026, and one for the period to 31 December 2025, due by 31 December 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Rathmore Developments Ltd still trading?
Rathmore Developments Ltd is listed as active on the Companies House register (checked 12 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 Rathmore Developments Ltd do?
Rathmore Developments Ltd is registered under Development of building projects (SIC 41100); Buying and selling of own real estate (SIC 68100); Other letting and operating of own or leased real estate (SIC 68209); Management of real estate on a fee or contract basis (SIC 68320).
How old is Rathmore Developments Ltd?
Rathmore Developments Ltd was incorporated on 12 September 2017, 9 years ago.
What is the penalty if Rathmore Developments 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 Rathmore Developments Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.