- Company number
- 17245110
- Incorporated
- 27 May 2026
- Registered office
- 92 Grasmere Avenue, Slough, SL2 5JF
- Nature of business
- Construction of domestic buildings
Harnek Building Solutions Limited is a newly incorporated private limited company registered in Slough, company number 17245110, one of 683 building contractors in Slough. Its next accounts are due at Companies House on 27 February 2028, and its first CT600 is due at HMRC on 26 May 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Harnek Building Solutions Limited is registered
The registered office is in Slough (SL2), in the Slough local authority area, South East. Show SL2 5JF on a map.
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What happens if Harnek Building Solutions 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 27 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Feb 2028 to 27 Mar 2028 | £150 |
| 1 to 3 months late | 28 Mar 2028 to 27 May 2028 | £375 |
| 3 to 6 months late | 28 May 2028 to 27 Aug 2028 | £750 |
| More than 6 months late | From 28 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2029 | 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
- 17245110
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 May 2026
- Registered office
- 92 Grasmere Avenue, Slough, SL2 5JF
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
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 Slough
Other active building contractors registered in Slough.
- Harpreet Singh10 Ltd2021
- Haval Building Ltd2025
- Hayat Builders Ltd2024
- HB Building & Paving Ltd2018
- Heathrow Global Construction Ltd2019
- Heathrow Lofts Design & Build Ltd2026
- Heatlands Construction Limited2020
- Heritage Group Limited2016
All building contractors in Slough · All trades in Slough · Builders across the UK
Frequently asked questions
When are Harnek Building Solutions Limited's accounts due?
Harnek Building Solutions Limited's next accounts are due at Companies House by 27 February 2028 (in 502 days), covering the period to 31 May 2027.
When is Harnek Building Solutions Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 26 May 2027, due by 26 May 2028, and one for the period to 31 May 2027, due by 31 May 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Harnek Building Solutions Limited still trading?
Harnek Building Solutions 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 Harnek Building Solutions Limited do?
Harnek Building Solutions Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Harnek Building Solutions Limited?
Harnek Building Solutions Limited was incorporated on 27 May 2026, less than a year ago.
What is the penalty if Harnek Building Solutions 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 Harnek Building Solutions 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.