- Companies
- Installers
- Maidenhead
- Altar Construction & Building Projects Ltd
Altar Construction & Building Projects Ltd
- Company number
- 15153035
- Incorporated
- 21 Sep 20233 years trading
- Registered office
- 35A Station Hill, Cookham, Maidenhead, SL6 9BR
- Nature of business
- Other construction installation; Engineering design activities for industrial process and production; specialised design activities; Other service activities n.e.c.
Altar Construction & Building Projects Ltd is a 3-year-old private limited company registered in Maidenhead, company number 15153035, one of 36 installation companies (insulation, lifts, shutters and similar) in Maidenhead. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Altar Construction & Building Projects LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £24 (+100%) on the year before, to £48.
- Current assets of £14K against £14K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £48 | £14K | £14K | £14K | 1 |
| 30 Sep 2024 | £24 | £886 | £862 | 1 |
Where Altar Construction & Building Projects Ltd is registered
The registered office is in Maidenhead (SL6), in the Windsor and Maidenhead local authority area, South East. Show SL6 9BR on a map.
Other trade companies in SL6
- B&M Cleaning Solutions LtdCleaning companies
- CC Garden Builds LtdBuilders
- Austin Groundwork Surfaces LimitedGroundworks and demolition
- Woodnest Interiors LtdJoiners and carpenters
- Carizmatic Company LimitedMotor traders
- Sakura Electrical LtdElectricians
- Elite Autos & Tyres LtdMotor traders
- Bigfrith End LtdSpecialist contractors
Also registered at this address
1 other company uses the same registered office as Altar Construction & Building Projects Ltd.
- The Maintenance Hub (Berkshire) LtdInstallers
What happens if Altar Construction & Building Projects 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15153035
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 September 2023 (3 years ago)
- Registered office
- 35A Station Hill, Cookham, Maidenhead, SL6 9BR
- Nature of business
- Other construction installation (SIC 43290)
Engineering design activities for industrial process and production (SIC 71121)
specialised design activities (SIC 74100)
Other service activities n.e.c. (SIC 96090) - Year end
- 30 September (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 20 September 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Maidenhead
Other active installation companies (insulation, lifts, shutters and similar) registered in Maidenhead.
- Approved Fencing Limited2024
- Binfield Renewable Solutions Limited2011
- Bristow Construction Ltd2013
- Eclipse Design Services Ltd2007
- Fire Technology Limited2016
- Funky Doors.Com Limited2016
- G Edwards Brickwork Ltd2016
- G4 Prime Ltd2021
All installation companies (insulation, lifts, shutters and similar) in Maidenhead · All trades in Maidenhead · Installers across the UK
Frequently asked questions
When are Altar Construction & Building Projects Ltd's accounts due?
Altar Construction & Building Projects Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Altar Construction & Building Projects Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Altar Construction & Building Projects Ltd still trading?
Altar Construction & Building Projects Ltd is listed as active on the Companies House register (checked 13 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 Altar Construction & Building Projects Ltd do?
Altar Construction & Building Projects Ltd is registered under Other construction installation (SIC 43290); Engineering design activities for industrial process and production (SIC 71121); specialised design activities (SIC 74100); Other service activities n.e.c. (SIC 96090).
How old is Altar Construction & Building Projects Ltd?
Altar Construction & Building Projects Ltd was incorporated on 21 September 2023, 3 years ago.
What is the penalty if Altar Construction & Building Projects 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 Altar Construction & Building Projects Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.