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  1. Companies
  2. Property developers
  3. London
  4. CSM Developments Limited

Company profile · Property developers

CSM Developments Limited

CSM Developments Limited is a 1-year-old private limited company registered in London, company number 16293049, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 5 December 2026, and its first CT600 is due at HMRC on 4 March 2027.

Active 16293049 No accounts filed yet accounts London Since 2025

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.

Accounts due
5 Dec 2026
in 54 days
For the period to 31 Mar 2026
CT600 due (first of two)
4 Mar 2027
in 143 days
Period 5 Mar 2025 to 4 Mar 2026
CT600 due (second of two)
31 Mar 2027
in 170 days
Period 5 Mar 2026 to 31 Mar 2026
Corporation tax payment
1 Jan 2027
in 81 days
9 months and 1 day after the period end
Confirmation statement
9 May 2027
in 209 days
Last made up to 25 Apr 2026

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Where CSM Developments Limited is registered

CSM Developments Limited's registered office on a map of the UK

The registered office is in London (N14), in the Enfield local authority area, London. Show N14 6HF on a map.

Other trade companies in N14

Also registered at this address

23 other companies use the same registered office as CSM Developments Limited.

What happens if CSM Developments 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 5 December 2026.

Companies HouseAccounts deliveredPenalty
Up to 1 month late6 Dec 2026 to 5 Jan 2027£150
1 to 3 months late6 Jan 2027 to 5 Mar 2027£375
3 to 6 months late6 Mar 2027 to 5 Jun 2027£750
More than 6 months lateFrom 6 Jun 2027£1,500

Penalties double if the accounts were also late the year before.

HMRC (CT600)FromPenalty
1 day late1 Apr 2027£200
3 months late30 Jun 2027another £200
6 months late30 Sep 2027HMRC estimates the tax and adds 10% of the unpaid tax
12 months late31 Mar 2028another 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
16293049
Status
Active
Company type
Private limited company
Incorporated
5 March 2025 (1 year ago)
Registered office
Southgate Office Village 286-A Chase Road, Block E, London, Greater London, N14 6HF
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
No accounts filed yet
Last confirmation statement
25 April 2026
Charges (mortgages)
2 outstanding of 2 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 London

Other active property development companies registered in London.

All property development companies in London · All trades in London · Property developers across the UK

Frequently asked questions

When are CSM Developments Limited's accounts due?

CSM Developments Limited's next accounts are due at Companies House by 5 December 2026 (in 54 days), covering the period to 31 March 2026.

When is CSM Developments 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 4 March 2026, due by 4 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.

Is CSM Developments Limited still trading?

CSM Developments 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 CSM Developments Limited do?

CSM Developments 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 CSM Developments Limited?

CSM Developments Limited was incorporated on 5 March 2025, 1 year ago.

What is the penalty if CSM Developments 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 CSM Developments Limited on Companies House for filed documents, officers and the full history.

Report an error on this page

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.

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