- Companies
- Specialist contractors
- Bristol
- Ai Building Ltd
Ai Building Ltd
- Company number
- 15150081
- Incorporated
- 20 Sep 20233 years trading
- Registered office
- 22 Woodland Avenue, Bristol, BS15 1PZ
- Nature of business
- Other specialised construction activities n.e.c.
Ai Building Ltd is a 3-year-old private limited company registered in Bristol, company number 15150081, one of 442 specialist construction companies in Bristol. 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.
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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 £80 (+7%) on the year before, to £1,216.
- Current assets of £540 against £1,756 owed within a year: 0.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 | £1,216 | £540 | £1,756 | 0 | |
| 30 Sep 2024 | £1,136 | £244 | £1,380 | 0 |
Where Ai Building Ltd is registered
The registered office is in Bristol (BS15), in the South Gloucestershire local authority area, South West. Show BS15 1PZ on a map.
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- CP Auto Services Bristol LtdMechanics and garages
Also registered at this address
1 other company uses the same registered office as Ai Building Ltd.
- Mca Contractors LimitedSpecialist contractors
What happens if Ai Building 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
- 15150081
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 September 2023 (3 years ago)
- Registered office
- 22 Woodland Avenue, Bristol, BS15 1PZ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 19 September 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Bristol
Other active specialist construction companies registered in Bristol.
- Alpine Property Services Limited2014
- Alteriors Design and Build Ltd2020
- Amh Commercial Projects Ltd.2013
- Ap Building Services Bristol Ltd2012
- Arc Structures Ltd2019
- Arc Transport Services Limited2016
- Arch Masonry Ltd2017
- Ashley Bryant Brickworks Limited2017
All specialist construction companies in Bristol · All trades in Bristol · Specialist contractors across the UK
Frequently asked questions
When are Ai Building Ltd's accounts due?
Ai Building 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 Ai Building 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 Ai Building Ltd still trading?
Ai Building 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 Ai Building Ltd do?
Ai Building Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Ai Building Ltd?
Ai Building Ltd was incorporated on 20 September 2023, 3 years ago.
What is the penalty if Ai Building 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 Ai Building 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.