- Companies
- Civil engineering
- Dalkeith
- Edinburgh Extensions & Alterations Ltd
Edinburgh Extensions & Alterations Ltd
- Company number
- SC684684
- Incorporated
- 30 Dec 20205 years trading
- Registered office
- 12 Speedwell Avenue, Danderhall, Dalkeith, EH22 1RA
- Nature of business
- Construction of other civil engineering projects n.e.c.; Architectural activities; Engineering related scientific and technical consulting activities; specialised design activities
Edinburgh Extensions & Alterations Ltd is a 5-year-old private limited company registered in Dalkeith, company number SC684684, one of 8 civil engineering contractors in Dalkeith. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 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 down £100 (-64.5%) on the year before, to £55.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £55 | £2,185 | £0 | 1 | |
| 31 Dec 2023 | £155 | £3,123 | £2,070 | 1 | |
| 31 Dec 2022 | £149 | £3,051 | £2,145 | 1 | |
| 31 Dec 2021 | £1,326 | £1,429 | 1 |
Where Edinburgh Extensions & Alterations Ltd is registered
The registered office is in Dalkeith (EH22), in the Midlothian local authority area, Scotland. Show EH22 1RA on a map.
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What happens if Edinburgh Extensions & Alterations 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC684684
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 December 2020 (5 years ago)
- Registered office
- 12 Speedwell Avenue, Danderhall, Dalkeith, EH22 1RA
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Architectural activities (SIC 71111)
Engineering related scientific and technical consulting activities (SIC 71122)
specialised design activities (SIC 74100) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 29 December 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Dalkeith
Other active civil engineering contractors registered in Dalkeith.
- Mascot Civils Ltd2014
- Relentless Solutions Limited2019
- The Tarmac Co Edinburgh Ltd2026
- 3G Strategy Ltd2006
- Allan Shiels Limited2025
- BCW Height Services Ltd2023
- DJ Forsyth Ltd2026
All civil engineering contractors in Dalkeith · All trades in Dalkeith · Civil engineering across the UK
Frequently asked questions
When are Edinburgh Extensions & Alterations Ltd's accounts due?
Edinburgh Extensions & Alterations Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Edinburgh Extensions & Alterations Ltd'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 December 2025, due by 31 December 2026, 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 Edinburgh Extensions & Alterations Ltd still trading?
Edinburgh Extensions & Alterations 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 Edinburgh Extensions & Alterations Ltd do?
Edinburgh Extensions & Alterations Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Architectural activities (SIC 71111); Engineering related scientific and technical consulting activities (SIC 71122); specialised design activities (SIC 74100).
How old is Edinburgh Extensions & Alterations Ltd?
Edinburgh Extensions & Alterations Ltd was incorporated on 30 December 2020, 5 years ago.
What is the penalty if Edinburgh Extensions & Alterations 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 Edinburgh Extensions & Alterations 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.