- Companies
- Finishing trades
- Edgware
- Costi Building Limited
Costi Building Limited
- Company number
- 09223461
- Incorporated
- 17 Sep 201412 years trading
- Registered office
- 21 Ranelagh Drive, Edgware, HA8 8HJ
- Nature of business
- Other building completion and finishing
Costi Building Limited is a 12-year-old private limited company registered in Edgware, company number 09223461, one of 113 building finishing companies in Edgware. Companies House shows its accounts as overdue: they were due on 30 June 2026.
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 down £89K on the year before, to -£88K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £145K against £21K owed within a year: 7.0 times cover.
- 2 employees on average, down from 3 the year before.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2024 | -£88K | £145K | £21K | 2 | |
| 30 Sep 2023 | £680 | £236K | £21K | 3 | |
| 30 Sep 2022 | £149 | £265K | £14K | 3 | |
| 30 Sep 2021 | £481 | £155K | £24K | 3 | |
| 30 Sep 2020 | £229 | £60K | £11K | 2 | |
| 30 Sep 2019 | £119 | £26K | £26K | ||
| 30 Sep 2018 | £79K | £153K | £73K | ||
| 30 Sep 2017 | £34K | £74K | £38K | ||
| 30 Sep 2016 | £1,568 | £5,150 | £5,150 | £3,682 | |
| 30 Sep 2015 | £738 | £2,522 | £2,522 |
Where Costi Building Limited is registered
The registered office is in Edgware (HA8), in the Barnet local authority area, London. Show HA8 8HJ on a map.
Other trade companies in HA8
- Capital Roadside & Motors LtdMotor traders
- Shreeji Decor LtdInstallers
- Kohli Group Properties LimitedProperty developers
- Brothers Landmark LtdProperty developers
- MS Flooring & Decor LtdFloor and wall tilers
- C&I Building Solutions LtdBuilders
- Dynamic Mobile Tyre LtdMechanics and garages
- Crownline Motors LtdMotor traders
Also registered at this address
1 other company uses the same registered office as Costi Building Limited.
- C&M Design and Build LtdFinishing trades
What happens if Costi Building Limited files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2026 to 31 Jul 2026 | £150 |
| 1 to 3 months late | 1 Aug 2026 to 30 Sep 2026 | £375 |
| 3 to 6 months late | 1 Oct 2026 to 31 Dec 2026 | £750 |
| More than 6 months late | From 1 Jan 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2026 | £200 |
| 3 months late | 30 Dec 2026 | another £200 |
| 6 months late | 30 Mar 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2027 | 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
- 09223461
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 September 2014 (12 years ago)
- Registered office
- 21 Ranelagh Drive, Edgware, HA8 8HJ
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2024
- Last confirmation statement
- 20 July 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Edgware
Other active building finishing companies registered in Edgware.
- Creese and McKnight Ltd2004
- Crisstar Services Ltd2025
- Dani Handyman Services Ltd2025
- Dannymar Contractors Ltd2017
- Declan Ruddy Construction Limited2022
- Deco-Design London Limited2019
- Digela Ltd2017
- Divla Ltd2017
All building finishing companies in Edgware · All trades in Edgware · Finishing trades across the UK
Frequently asked questions
When are Costi Building Limited's accounts due?
Costi Building Limited's accounts were due at Companies House on 30 June 2026 and the register shows them as overdue.
When is Costi Building Limited's CT600 due?
The CT600 for the period to 30 September 2025 is due at HMRC by 30 September 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2026.
Is Costi Building Limited still trading?
Costi Building Limited 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 Costi Building Limited do?
Costi Building Limited is registered under Other building completion and finishing (SIC 43390).
How old is Costi Building Limited?
Costi Building Limited was incorporated on 17 September 2014, 12 years ago.
What is the penalty if Costi Building 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 Costi Building Limited 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.