- Companies
- Builders
- Carshalton
- Alir Construction Ltd
Alir Construction Ltd
- Company number
- 10795158
- Incorporated
- 31 May 20179 years trading
- Registered office
- 51 Sherborne Crescent, Carshalton, SM5 1JU
- Nature of business
- Construction of commercial buildings; Other building completion and finishing
Alir Construction Ltd is a 9-year-old private limited company registered in Carshalton, company number 10795158, one of 104 building contractors in Carshalton. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £239K (+67.5%) on the year before, to £593K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £704K against £115K owed within a year: 6.1 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2018 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £593K | £389K | £704K | £115K | 2 |
| 31 May 2025 | £354K | £91K | £436K | £95K | 2 |
| 31 May 2024 | £328K | £310K | £394K | £80K | 2 |
| 31 May 2023 | £306K | £388K | £90K | 2 | |
| 31 May 2022 | £122K | £187K | £81K | 2 | |
| 31 May 2021 | £74K | £149K | £25K | 2 | |
| 31 May 2020 | £78K | £105K | £22K | 2 | |
| 31 May 2019 | £109K | £135K | £26K | 2 | |
| 31 May 2018 | £58K | £78K | £20K |
Where Alir Construction Ltd is registered
The registered office is in Carshalton (SM5), in the Sutton local authority area, London. Show SM5 1JU on a map.
Other trade companies in SM5
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- 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
Also registered at this address
1 other company uses the same registered office as Alir Construction Ltd.
- Alir Properties LtdProperty developers
What happens if Alir Construction 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 10795158
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 May 2017 (9 years ago)
- Registered office
- 51 Sherborne Crescent, Carshalton, SM5 1JU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Other building completion and finishing (SIC 43390) - Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 30 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 Carshalton
Other active building contractors registered in Carshalton.
- Apex Fix Limited2025
- Artmixpro Amp Construction Limited2025
- Atlas Prime Construction Limited2026
- Az Construction & Renovation Ltd2026
- Az Plumbing & Heating Specialist Ltd.2015
- B.M. Building Service Contractors Ltd2026
- Babii Ihor Building Services Ltd2025
- Build & Renovate BM Ltd2024
All building contractors in Carshalton · All trades in Carshalton · Builders across the UK
Frequently asked questions
When are Alir Construction Ltd's accounts due?
Alir Construction Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Alir Construction Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Alir Construction Ltd still trading?
Alir Construction 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 Alir Construction Ltd do?
Alir Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Other building completion and finishing (SIC 43390).
How old is Alir Construction Ltd?
Alir Construction Ltd was incorporated on 31 May 2017, 9 years ago.
What is the penalty if Alir Construction 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 Alir Construction 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.