- Companies
- Property developers
- Edinburgh
- Au145 Limited
Au145 Limited
- Company number
- SC837633
- Incorporated
- 13 Feb 20251 year trading
- Registered office
- 111 Caiyside, Edinburgh, EH10 7HR
- Nature of business
- Development of building projects
Au145 Limited is a 1-year-old private limited company registered in Edinburgh, company number SC837633, one of 498 property development companies in Edinburgh. Its next accounts are due at Companies House on 13 November 2026, and its first CT600 is due at HMRC on 12 February 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.
Is this your company?
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Where Au145 Limited is registered
The registered office is in Edinburgh (EH10), in the City of Edinburgh local authority area, Scotland. Show EH10 7HR on a map.
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What happens if Au145 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 13 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Nov 2026 to 13 Dec 2026 | £150 |
| 1 to 3 months late | 14 Dec 2026 to 13 Feb 2027 | £375 |
| 3 to 6 months late | 14 Feb 2027 to 13 May 2027 | £750 |
| More than 6 months late | From 14 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- SC837633
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 February 2025 (1 year ago)
- Registered office
- 111 Caiyside, Edinburgh, EH10 7HR
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 April 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 Edinburgh
Other active property development companies registered in Edinburgh.
- Auchendrane Estates Limited1945
- Auckinleck Building Company Limited1979
- Aura Projects Edinburgh Ltd2024
- Automation and General Securities Limited1956
- Avoca Joinery Ltd.2012
- Avonpeak Developments Ltd2024
- Avonpeak Lauriston Limited2025
- Ballina Construction Limited2005
All property development companies in Edinburgh · All trades in Edinburgh · Property developers across the UK
Frequently asked questions
When are Au145 Limited's accounts due?
Au145 Limited's next accounts are due at Companies House by 13 November 2026 (in 32 days), covering the period to 28 February 2026.
When is Au145 Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 12 February 2026, due by 12 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Au145 Limited still trading?
Au145 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 Au145 Limited do?
Au145 Limited is registered under Development of building projects (SIC 41100).
How old is Au145 Limited?
Au145 Limited was incorporated on 13 February 2025, 1 year ago.
What is the penalty if Au145 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 Au145 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.