- Company number
- 11113118
- Incorporated
- 15 Dec 20178 years trading
- Registered office
- 167-169 Great Portland Street 167-169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- Construction of domestic buildings; Other building completion and finishing
KBB Master Builder Ltd is a 8-year-old private limited company registered in London, company number 11113118, 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.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for KBB Master Builder LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £722 (-75.7%) on the year before, to £232.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £83K against £100K owed within a year: 0.8 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £232 | £83K | £100K | 1 | |
| 31 Dec 2024 | £954 | £75K | £97K | 1 | |
| 31 Dec 2023 | £725 | £75K | £88K | 1 | |
| 31 Dec 2022 | £46K | £89K | £70K | 1 | |
| 31 Dec 2021 | £11K | £7,732 | £11K | 1 | |
| 31 Dec 2020 | £7,170 | £10K | £8,547 | 1 | |
| 31 Dec 2019 | £100 | £100 | 1 | ||
| 31 Dec 2018 | £100 | £100 |
Where KBB Master Builder Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
Other trade companies in W1W
- Civaris LtdSpecialist contractors
- R&R Construction Group LtdBuilders
- Aurum Cooling LtdPlumbers and heating engineers
- Steam Wood Stone LtdFinishing trades
- Hau Developments LimitedProperty developers
- Group Atlas Financial 83 LtdPainters and decorators
- Energy Reward LtdMotor traders
- Holly’S Housekeeping LtdCleaning companies
Also registered at this address
13 other companies use the same registered office as KBB Master Builder Ltd.
- Acme Property Construction LtdBuilders
- Ashbrick Builders LtdProperty developers
- Crownfield Property Group LtdBuilders
- Daksi As LimitedProperty developers
- Deep Cleans London LtdCleaning companies
- Iba Projects LtdInstallers
- Lloyds Global Enterprise LimitedMotor traders
- NT Property Maintenance LtdSpecialist contractors
- R&T Maintenance LtdBuilders
- Renovaim LtdBuilders
- Scarab Builders LtdBuilders
- Uc Cleaning & Services LtdCleaning companies
- WPLT LtdProperty developers
What happens if KBB Master Builder 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
- 11113118
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 December 2017 (8 years ago)
- Registered office
- 167-169 Great Portland Street 167-169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 11 December 2025
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.
- KBK Groundworks Ltd2026
- KBM Inspiration Ltd2018
- KBS Build Ltd2021
- KC London Project Limited2023
- KD Brickwork (UK) Limited2008
- KD Building & Design Ltd2025
- KD Engineers Limited2023
- KDLS Resources Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are KBB Master Builder Ltd's accounts due?
KBB Master Builder 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 KBB Master Builder 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 KBB Master Builder Ltd still trading?
KBB Master Builder 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 KBB Master Builder Ltd do?
KBB Master Builder Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390).
How old is KBB Master Builder Ltd?
KBB Master Builder Ltd was incorporated on 15 December 2017, 8 years ago.
What is the penalty if KBB Master Builder 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 KBB Master Builder 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.