- Companies
- Specialist contractors
- London
- Sustainable Construction Technologies Limited
Sustainable Construction Technologies Limited
- Company number
- 12936388
- Incorporated
- 7 Oct 20206 years trading
- Registered office
- C/O Goldwyns London LLP, No.1 Royal Exchange, London, EC3V 3DG
- Nature of business
- Other specialised construction activities n.e.c.
Sustainable Construction Technologies Limited is a 6-year-old private limited company registered in London, company number 12936388, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 unchanged on the year before, at £100.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £203K against £208K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £100 | £203K | £208K | 1 | |
| 31 Oct 2023 | £100 | £100 | |||
| 1 Nov 2022 | £100 | £100 | |||
| 31 Oct 2022 | £100 | £100 | |||
| 31 Oct 2021 | £100 | £100 |
Where Sustainable Construction Technologies Limited is registered
The registered office is in London (EC3V), in the City of London local authority area, London. Show EC3V 3DG on a map.
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Also registered at this address
17 other companies use the same registered office as Sustainable Construction Technologies Limited.
- A D Homes London LtdSpecialist contractors
- Ashbourne Capital Partners LimitedProperty developers
- Direct Property Management LimitedProperty developers
- Eedn LtdProperty developers
- Mi Maintenance LimitedBuilders
- Omniform LimitedBuilders
- PHL Bicester LimitedProperty developers
- PHL Broadstairs LimitedProperty developers
- PHL Burton LimitedProperty developers
- PHL Camborne LimitedProperty developers
- PHL Crawley LimitedProperty developers
- PHL Exeter LimitedProperty developers
- PHL Leeds LimitedProperty developers
- PHL Nottingham LimitedProperty developers
- PHL Shrewsbury LimitedProperty developers
- PHL Telford LimitedProperty developers
- Thermodul System UK LimitedSpecialist contractors
What happens if Sustainable Construction Technologies 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12936388
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2020 (6 years ago)
- Registered office
- C/O Goldwyns London LLP, No.1 Royal Exchange, London, EC3V 3DG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 19 May 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Sustainable Eco Solutions Ltd2025
- Sustained by Finethorp Limited2024
- Sutton Projects Limited2004
- SV Painting Ltd2021
- SVFL Ltd2019
- SW Builds & Plumbing Ltd2025
- SW Engineering Consultancy Ltd2026
- SW London Building & Refurbishment Limited2016
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Sustainable Construction Technologies Limited's accounts due?
Sustainable Construction Technologies Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Sustainable Construction Technologies 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 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sustainable Construction Technologies Limited still trading?
Sustainable Construction Technologies 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 Sustainable Construction Technologies Limited do?
Sustainable Construction Technologies Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sustainable Construction Technologies Limited?
Sustainable Construction Technologies Limited was incorporated on 7 October 2020, 6 years ago.
What is the penalty if Sustainable Construction Technologies 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 Sustainable Construction Technologies 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.