- Company number
- 15507782
- Incorporated
- 20 Feb 20242 years trading
- Registered office
- 10 Beech Holme, Crawley Down, Crawley, RH10 4JA
- Nature of business
- Construction of domestic buildings
Ac Building Improvements Limited is a 2-year-old private limited company registered in Crawley, company number 15507782, one of 156 building contractors in Crawley. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 28 February 2025, as filed at Companies House.
Where Ac Building Improvements Limited is registered
The registered office is in Crawley (RH10), in the Mid Sussex local authority area, South East. Show RH10 4JA on a map.
Other trade companies in RH10
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- Jayappiah Property Group LimitedProperty developers
- Gooads LimitedFinishing trades
- Befast Plumbing & Drainage LimitedPlumbers and heating engineers
- NN Electrical LimitedElectricians
- Upperline Interiors LimitedPainters and decorators
- Theboilerboys LtdMachinery repair and installation
What happens if Ac Building Improvements 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 15507782
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 February 2024 (2 years ago)
- Registered office
- 10 Beech Holme, Crawley Down, Crawley, RH10 4JA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 29 May 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 Crawley
Other active building contractors registered in Crawley.
- Aik Rei Ltd2023
- Aim Scaffolding Limited2006
- Aim Trust Construction Ltd2016
- Alpha Fix Limited2024
- Amica Construction UK Limited2015
- Amv Development Group Ltd2026
- Ar Driveways & Construction Ltd2026
- Aspect Construction (South East) Limited2019
All building contractors in Crawley · All trades in Crawley · Builders across the UK
Frequently asked questions
When are Ac Building Improvements Limited's accounts due?
Ac Building Improvements Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Ac Building Improvements Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Ac Building Improvements Limited still trading?
Ac Building Improvements 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 Ac Building Improvements Limited do?
Ac Building Improvements Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Ac Building Improvements Limited?
Ac Building Improvements Limited was incorporated on 20 February 2024, 2 years ago.
What is the penalty if Ac Building Improvements 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 Ac Building Improvements 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.