- Companies
- Builders
- Carshalton
- Wong House Limited
Wong House Limited
- Company number
- 09975145
- Incorporated
- 28 Jan 201610 years trading
- Registered office
- 35 Ruskin Road, Carshalton, SM5 3DD
- Nature of business
- Construction of domestic buildings; Sale of used cars and light motor vehicles
Wong House Limited is a 10-year-old private limited company registered in Carshalton, company number 09975145, one of 104 building contractors in Carshalton. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 down £9,098 (-7.8%) on the year before, to -£126K.
- Net assets rose in 1 of 8 year-on-year comparisons on record.
- Current assets of £17K against £138K owed within a year: 0.1 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | -£126K | £17K | £138K | 2 | |
| 31 Jan 2024 | -£117K | £17K | £133K | 2 | |
| 31 Jan 2023 | -£52K | £17K | £12K | 2 | |
| 31 Jan 2022 | -£76K | £12K | £6,721 | 2 | |
| 31 Jan 2021 | -£41K | £1,722 | £2,743 | 2 | |
| 31 Jan 2020 | -£22K | £0 | £22K | 2 | |
| 31 Jan 2019 | -£14K | £10 | £14K | 2 | |
| 31 Jan 2018 | -£1,667 | £15 | £1,682 | ||
| 31 Jan 2017 | £3,222 | £5,403 | £2,181 |
Where Wong House Limited is registered
The registered office is in Carshalton (SM5), in the Sutton local authority area, London. Show SM5 3DD on a map.
Other trade companies in SM5
- Rich Detailz LtdMechanics and garages
- Sutton Motor and Garage LtdMechanics and garages
- Ecobuild Plumbing & Heating LtdPlumbers and heating engineers
- Aaircon Services LtdPlumbers and heating engineers
- Perthy Properties (Greenhills) LimitedProperty developers
- Jophp LimitedCleaning companies
- Pro-Type Roofing LtdRoofers
- Mic Cleaning LimitedCleaning companies
What happens if Wong House 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 09975145
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2016 (10 years ago)
- Registered office
- 35 Ruskin Road, Carshalton, SM5 3DD
- Nature of business
- Construction of domestic buildings (SIC 41202)
Sale of used cars and light motor vehicles (SIC 45112) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 27 January 2026
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 Carshalton
Other active building contractors registered in Carshalton.
- Xspan (Building) Ltd2018
- 360 Developers Ltd2020
- Akz Developers Ltd2026
- Alegra Limited2013
- Aleks Carpentry Ltd2016
- Alg Home Improvements Ltd2014
- Alir Construction Ltd2017
- Apex Fix Limited2025
All building contractors in Carshalton · All trades in Carshalton · Builders across the UK
Frequently asked questions
When are Wong House Limited's accounts due?
Wong House Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Wong House Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Wong House Limited still trading?
Wong House Limited 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 Wong House Limited do?
Wong House Limited is registered under Construction of domestic buildings (SIC 41202); Sale of used cars and light motor vehicles (SIC 45112).
How old is Wong House Limited?
Wong House Limited was incorporated on 28 January 2016, 10 years ago.
What is the penalty if Wong House 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 Wong House Limited 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.