- Companies
- Builders
- Thornton Heath
- Sonic Build Ltd
Sonic Build Ltd
- Company number
- 12768445
- Incorporated
- 27 Jul 20206 years trading
- Registered office
- 27 Ashley Road, Thornton Heath, CR7 6HW
- Nature of business
- Construction of domestic buildings
Sonic Build Ltd is a 6-year-old private limited company registered in Thornton Heath, company number 12768445, one of 111 building contractors in Thornton Heath. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £128K (+102.2%) on the year before, to £2,781.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- 2 employees on average, down from 3 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 Jul 2025 | £2,781 | £6,102 | 2 | ||
| 31 Jul 2024 | -£126K | £689 | £126K | 3 | |
| 31 Jul 2023 | -£113K | £10K | £123K | 3 | |
| 31 Jul 2022 | £409 | £45K | £45K | 3 | |
| 31 Jul 2021 | -£661 | £5,618 | £6,279 | 2 |
Where Sonic Build Ltd is registered
The registered office is in Thornton Heath (CR7), in the Croydon local authority area, London. Show CR7 6HW on a map.
Other trade companies in CR7
- Ib Air Conditioning LimitedPlumbers and heating engineers
- Gold Carpet Cleaning Services LtdCleaning companies
- Azad Auto LtdMechanics and garages
- Tota Steel LtdFinishing trades
- Survey Stream Property Services LtdFacilities management
- Saunders Mechanics LtdMechanics and garages
- SR Gas London LimitedPlumbers and heating engineers
- Prestige Auto Repair & Body Works LtdMechanics and garages
What happens if Sonic Build 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 12768445
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 July 2020 (6 years ago)
- Registered office
- 27 Ashley Road, Thornton Heath, CR7 6HW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 26 July 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 Thornton Heath
Other active building contractors registered in Thornton Heath.
- SR Contruction Limited2025
- Terraart Ltd2024
- Tlinx Limited2023
- Trkconstruction Ltd2026
- V.R. Services Ltd2020
- Valchev Contractor Ltd2018
- 110 Deaconsfield RD Ltd2022
- A C Obrijanu Fixing Ltd2019
All building contractors in Thornton Heath · All trades in Thornton Heath · Builders across the UK
Frequently asked questions
When are Sonic Build Ltd's accounts due?
Sonic Build Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Sonic Build Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Sonic Build Ltd still trading?
Sonic Build Ltd is listed as active on the Companies House register (checked 12 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 Sonic Build Ltd do?
Sonic Build Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Sonic Build Ltd?
Sonic Build Ltd was incorporated on 27 July 2020, 6 years ago.
What is the penalty if Sonic Build 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 Sonic Build Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.