- Companies
- Property developers
- Alexandria
- Iro Building Limited
Iro Building Limited
- Company number
- SC484860
- Incorporated
- 21 Aug 201412 years trading
- Registered office
- 13 King Edward Street, Alexandria, Dunbartonshire, G83 0EH
- Nature of business
- Development of building projects; Construction of commercial buildings; Construction of domestic buildings
Iro Building Limited is a 12-year-old private limited company registered in Alexandria, company number SC484860, one of 7 property development companies in Alexandria. 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 up £17K (+65%) on the year before, to £44K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- 5 employees on average, up from 3 the year before.
- 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 | £44K | £21K | 5 | ||
| 31 Mar 2024 | £27K | £9,694 | 3 | ||
| 31 Mar 2023 | £23K | £12K | 3 | ||
| 31 Mar 2022 | £5,269 | £16K | 2 | ||
| 31 Mar 2021 | £4,112 | £33K | 3 | ||
| 31 Mar 2020 | £4,112 | £0 | £0 | 2 | |
| 31 Mar 2019 | £11K | £2,065 | £309 | ||
| 31 Mar 2018 | £7,931 | £0 | £0 | ||
| 31 Mar 2017 | £7,738 | £8,680 | £8,680 | £943 | |
| 31 Mar 2016 | £3,964 | £4,002 | £4,002 | £38 |
Where Iro Building Limited is registered
The registered office is in Alexandria (G83), in the West Dunbartonshire local authority area, Scotland. Show G83 0EH on a map.
Other trade companies in G83
- SDM Decorators LtdPainters and decorators
- A&A Ground & Property Maintenance LtdSpecialist contractors
- Lomond Car & Van Centre LtdMotor traders
- NJL Services LtdSpecialist contractors
- Moir Contracts LtdProperty developers
- GC Electrical Dumbarton LimitedElectricians
- JB Builders & Joiners LtdProperty developers
- Vigile Fire & Security LtdElectricians
What happens if Iro Building 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
- SC484860
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2014 (12 years ago)
- Registered office
- 13 King Edward Street, Alexandria, Dunbartonshire, G83 0EH
- Nature of business
- Development of building projects (SIC 41100)
Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 21 August 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 Alexandria
Other active property development companies registered in Alexandria.
- JB Builders & Joiners Ltd2026
- Lochlomondconsulting.Com Limited2021
- McVey Group Ltd2018
- Moir Contracts Ltd2026
- Nextgeneration Maintenance Limited2022
- NWL Estates Ltd2024
All property development companies in Alexandria · All trades in Alexandria · Property developers across the UK
Frequently asked questions
When are Iro Building Limited's accounts due?
Iro Building 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 Iro Building 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 Iro Building Limited still trading?
Iro Building 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 Iro Building Limited do?
Iro Building Limited is registered under Development of building projects (SIC 41100); Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Iro Building Limited?
Iro Building Limited was incorporated on 21 August 2014, 12 years ago.
What is the penalty if Iro Building 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 Iro Building 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.