- Companies
- Property developers
- London
- Csa Builders Limited
Csa Builders Limited
- Company number
- 16735349
- Incorporated
- 22 Sep 20251 year trading
- Registered office
- 30 Mitcham Road, London, SW17 9NA
- Nature of business
- Development of building projects; Construction of commercial buildings; Construction of domestic buildings
Csa Builders Limited is a 1-year-old private limited company registered in London, company number 16735349, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 22 June 2027, and its first CT600 is due at HMRC on 21 September 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.
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Where Csa Builders Limited is registered
The registered office is in London (SW17), in the Wandsworth local authority area, London. Show SW17 9NA on a map.
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Also registered at this address
1 other company uses the same registered office as Csa Builders Limited.
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What happens if Csa Builders 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 22 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Jun 2027 to 22 Jul 2027 | £150 |
| 1 to 3 months late | 23 Jul 2027 to 22 Sep 2027 | £375 |
| 3 to 6 months late | 23 Sep 2027 to 22 Dec 2027 | £750 |
| More than 6 months late | From 23 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16735349
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 September 2025 (1 year ago)
- Registered office
- 30 Mitcham Road, London, SW17 9NA
- Nature of business
- Development of building projects (SIC 41100)
Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 21 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 London
Other active property development companies registered in London.
- Csa Estates Ltd2017
- CSJ Homes (En3) Ltd2022
- CSJV CPL UK Swindon 1 Holdco Limited2024
- CSJV CPL UK Swindon 2 Holdco Limited2024
- CSJV CPL UK Swindon 3 Holdco Limited2024
- CSJV CPL UK Swindon 4 Holdco Limited2024
- CSJV CPL UK Swindon 5 Holdco Limited2024
- CSJV CPL UK Swindon 6 Holdco Limited2024
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Csa Builders Limited's accounts due?
Csa Builders Limited's next accounts are due at Companies House by 22 June 2027 (in 253 days), covering the period to 30 September 2026.
When is Csa Builders 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 21 September 2026, due by 21 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Csa Builders Limited still trading?
Csa Builders Limited 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 Csa Builders Limited do?
Csa Builders 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 Csa Builders Limited?
Csa Builders Limited was incorporated on 22 September 2025, 1 year ago.
What is the penalty if Csa Builders 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 Csa Builders Limited 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.