- Companies
- Specialist contractors
- Helensburgh
- Low Carbon Developments Limited
Low Carbon Developments Limited
- Company number
- SC493681
- Incorporated
- 18 Dec 201411 years trading
- Registered office
- 48 Sinclair Street, Helensburgh, G84 8TQ
- Nature of business
- Other specialised construction activities n.e.c.; Engineering related scientific and technical consulting activities
Low Carbon Developments Limited is a 11-year-old private limited company registered in Helensburgh, company number SC493681, one of the UK's specialist construction companies. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 30 December 2026 is due at HMRC on 30 December 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 up £300K (+19.6%) on the year before, to £1.8M.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- 6 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Dec 2025 | £1.8M | £856K | £0 | 6 | |
| 30 Dec 2024 | £1.5M | £806K | £0 | 6 | |
| 30 Dec 2023 | £1.4M | £145K | £715K | £0 | 4 |
| 30 Dec 2022 | £1.5M | £105K | £1M | 8 | |
| 30 Dec 2021 | £1.4M | £84K | £941K | £93K | 8 |
| 30 Dec 2020 | £600K | £32K | £617K | £28K | 4 |
| 30 Dec 2019 | £543K | £533K | £0 | 1 | |
| 30 Dec 2018 | £543K | £533K | £0 | 0 | |
| 30 Dec 2017 | £278K | £543K | £711K | ||
| 30 Dec 2016 | -£254K | £11K | £544K | £699K | 2 |
Where Low Carbon Developments Limited is registered
The registered office is in Helensburgh (G84), in the Argyll and Bute local authority area, Scotland. Show G84 8TQ on a map.
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What happens if Low Carbon 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Dec 2027 | £200 |
| 3 months late | 30 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Dec 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
- SC493681
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 December 2014 (11 years ago)
- Registered office
- 48 Sinclair Street, Helensburgh, G84 8TQ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 30 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 December 2025
- Last confirmation statement
- 20 May 2026
- Previous names
- I Am Solar Ltd (until 27 May 2025)
Iam Solar Limited (until 18 Feb 2019)
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 Helensburgh
Other active specialist construction companies registered in Helensburgh.
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Frequently asked questions
When are Low Carbon Developments Limited's accounts due?
Low Carbon Developments Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 30 December 2026.
When is Low Carbon Developments Limited's CT600 due?
The CT600 for the period to 30 December 2026 is due at HMRC by 30 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Low Carbon Developments Limited still trading?
Low Carbon Developments 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 Low Carbon Developments Limited do?
Low Carbon Developments Limited is registered under Other specialised construction activities n.e.c. (SIC 43999); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Low Carbon Developments Limited?
Low Carbon Developments Limited was incorporated on 18 December 2014, 11 years ago.
What is the penalty if Low Carbon 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 Low Carbon Developments 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.