- Company number
- 13093766
- Incorporated
- 21 Dec 20205 years trading
- Registered office
- 219 Harlesden Road, 219 Harlesden Road, London, NW10 3SD
- Nature of business
- Construction of domestic buildings
KM Construction & New Building Ltd. is a 5-year-old private limited company registered in London, company number 13093766, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 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 £821 (+14.7%) on the year before, to £6,396.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- 3 employees on average, up from 2 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £6,396 | £4,460 | £0 | 3 | |
| 31 Dec 2024 | £5,575 | £2,980 | 2 | ||
| 31 Dec 2023 | £7,641 | £3,748 | 1 | ||
| 31 Dec 2022 | £5,518 | £4,818 | £0 | 1 | |
| 31 Dec 2021 | £3,394 | £3,394 | £0 | 1 |
Where KM Construction & New Building Ltd. is registered
The registered office is in London (NW10), in the Brent local authority area, London. Show NW10 3SD on a map.
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What happens if KM Construction & New Building 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 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 | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 13093766
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 December 2020 (5 years ago)
- Registered office
- 219 Harlesden Road, 219 Harlesden Road, London, NW10 3SD
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 19 December 2025
- Previous names
- Atlas Construction & Maintenance Ltd (until 19 Sep 2023)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- KM Construction Ltd2019
- KM Drylining Limited2025
- KM Interiors Ltd2025
- KM Property Maintenance Limited2018
- Kma Builders Ltd2022
- KMC Construction & Developments Ltd2025
- KMC Dry Liner Specialist Ltd2023
- KMG Services Ltd Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are KM Construction & New Building Ltd.'s accounts due?
KM Construction & New Building Ltd.'s next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is KM Construction & New Building Ltd.'s CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is KM Construction & New Building Ltd. still trading?
KM Construction & New Building 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 KM Construction & New Building Ltd. do?
KM Construction & New Building Ltd. is registered under Construction of domestic buildings (SIC 41202).
How old is KM Construction & New Building Ltd.?
KM Construction & New Building Ltd. was incorporated on 21 December 2020, 5 years ago.
What is the penalty if KM Construction & New Building 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 KM Construction & New Building 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.