- Companies
- Property developers
- Birmingham
- Thirty Development Ltd
Thirty Development Ltd
- Company number
- 10859802
- Incorporated
- 11 Jul 20179 years trading
- Registered office
- 121 Colman House, Livery Street, Birmingham, B3 1RS
- Nature of business
- Development of building projects
Thirty Development Ltd is a 9-year-old private limited company registered in Birmingham, company number 10859802, one of 1,027 property development companies in Birmingham. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 down £39K (-11.2%) on the year before, to -£387K.
- Net assets rose in 0 of 7 year-on-year comparisons on record.
- Current assets of £370K against £48K owed within a year: 7.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£387K | £370K | £48K | 0 | |
| 31 Jul 2024 | -£348K | £370K | £45K | 0 | |
| 31 Jul 2023 | -£310K | £370K | £42K | 0 | |
| 31 Jul 2022 | -£272K | £370K | £38K | 0 | |
| 31 Jul 2021 | -£236K | £370K | £165K | 0 | |
| 31 Jul 2020 | -£229K | £370K | £160K | 0 | |
| 31 Jul 2019 | -£163K | £370K | £96K | 0 | |
| 31 Jul 2018 | £1 | £1 |
Where Thirty Development Ltd is registered
The registered office is in Birmingham (B3), in the Birmingham local authority area, West Midlands. Show B3 1RS on a map.
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Also registered at this address
2 other companies use the same registered office as Thirty Development Ltd.
- Thirty Four Development LtdProperty developers
- Thirty Two Development LtdProperty developers
What happens if Thirty Development 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 10859802
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 July 2017 (9 years ago)
- Registered office
- 121 Colman House, Livery Street, Birmingham, B3 1RS
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 8 June 2026
- Charges (mortgages)
- 4 outstanding of 4 registered
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 Birmingham
Other active property development companies registered in Birmingham.
- Thirty Four Development Ltd2017
- Thirty Two Development Ltd2017
- Tilia Building Limited2018
- Together Build and Repairs Limited2025
- Tombud Building Ltd2014
- Tombud Properties Ltd2014
- Toro Studios Ltd2026
- TRB Contractors Ltd2022
All property development companies in Birmingham · All trades in Birmingham · Property developers across the UK
Frequently asked questions
When are Thirty Development Ltd's accounts due?
Thirty Development Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Thirty Development Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Thirty Development Ltd still trading?
Thirty Development 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 Thirty Development Ltd do?
Thirty Development Ltd is registered under Development of building projects (SIC 41100).
How old is Thirty Development Ltd?
Thirty Development Ltd was incorporated on 11 July 2017, 9 years ago.
What is the penalty if Thirty Development 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 Thirty Development 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.