- Companies
- Joiners and carpenters
- Edinburgh
- K&M Building System Ltd
K&M Building System Ltd
- Company number
- SC394357
- Incorporated
- 28 Feb 201115 years trading
- Registered office
- 23 Balmwell Avenue, Edinburgh, EH16 6HE
- Nature of business
- Joinery installation; Other building and industrial cleaning activities
K&M Building System Ltd is a 15-year-old private limited company registered in Edinburgh, company number SC394357, one of 170 joinery companies in Edinburgh. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £1,691 (+20.5%) on the year before, to £9,947.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £8,625 against £1,243 owed within a year: 6.9 times cover.
- 2 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 |
|---|---|---|---|---|---|
| 28 Feb 2025 | £9,947 | £8,625 | £1,243 | 2 | |
| 29 Feb 2024 | £8,256 | £6,582 | £905 | 2 | |
| 28 Feb 2023 | £7,238 | £9,215 | £2,085 | 2 | |
| 28 Feb 2022 | £3,289 | £2,785 | £1,666 | 2 | |
| 28 Feb 2021 | £1,573 | £2,935 | £0 | 2 | |
| 29 Feb 2020 | £1,383 | £2,928 | £2,115 | 2 | |
| 28 Feb 2019 | £5,987 | £1,895 | £1,810 | ||
| 28 Feb 2018 | £5,981 | £1,609 | |||
| 28 Feb 2017 | £5,682 | £880 | |||
| 29 Feb 2016 | £1 |
Where K&M Building System Ltd is registered
The registered office is in Edinburgh (EH16), in the City of Edinburgh local authority area, Scotland. Show EH16 6HE on a map.
Other trade companies in EH16
- Immaculate Cleaning & Services LtdCleaning companies
- Advance Plumbing and Heating LtdPlumbers and heating engineers
- Key Developments Edinburgh LtdJoiners and carpenters
- Ij Group LimitedMotor traders
- Capital Joinery & Construction LtdBuilders
- 515 M LtdSpecialist contractors
- Edinburgh E.P.L Scaffolding LtdScaffolders
- East Coast Building Contractors LimitedBuilders
What happens if K&M Building System 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- SC394357
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 February 2011 (15 years ago)
- Registered office
- 23 Balmwell Avenue, Edinburgh, EH16 6HE
- Nature of business
- Joinery installation (SIC 43320)
Other building and industrial cleaning activities (SIC 81229) - Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 28 February 2026
- Previous names
- Cleaning System Ltd (until 16 Mar 2016)
Filing notes for joinery companies
Joinery companies can carry stock and work in progress at the year end, especially bespoke workshop work, and that figure moves the profit for the year.
Similar companies in Edinburgh
Other active joinery companies registered in Edinburgh.
- K.L.A.S. Joiners Ltd.2017
- Kevin Mochrie Joinery Ltd2016
- Key Developments Edinburgh Ltd2026
- KNR Enterprises Ltd2021
- La Joinery and Building Ltd2019
- Lawrie Developments Ltd2026
- LDW Joinery Limited2023
- Linlithgow Construction Ltd2016
All joinery companies in Edinburgh · All trades in Edinburgh · Joiners and carpenters across the UK
Frequently asked questions
When are K&M Building System Ltd's accounts due?
K&M Building System Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is K&M Building System Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is K&M Building System Ltd still trading?
K&M Building System 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 K&M Building System Ltd do?
K&M Building System Ltd is registered under Joinery installation (SIC 43320); Other building and industrial cleaning activities (SIC 81229).
How old is K&M Building System Ltd?
K&M Building System Ltd was incorporated on 28 February 2011, 15 years ago.
What is the penalty if K&M Building System 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 K&M Building System 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.