- Companies
- Property developers
- Harrow
- BT1 Dev Limited
BT1 Dev Limited
- Company number
- 09457629
- Incorporated
- 25 Feb 201511 years trading
- Registered office
- Printing House, 66, Lower Road, Harrow, HA2 0DH
- Nature of business
- Development of building projects
BT1 Dev Limited is a 11-year-old private limited company registered in Harrow, company number 09457629, one of 679 property development companies in Harrow. Its next accounts are due at Companies House on 24 November 2026, and the CT600 for the period to 24 February 2026 is due at HMRC on 24 February 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 down £11K (-38%) on the year before, to -£41K.
- Net assets rose in 0 of 9 year-on-year comparisons on record.
- Current assets of £358K against £381K owed within a year: 0.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | -£41K | £833 | £358K | £381K | 0 |
| 29 Feb 2024 | -£30K | £357K | £369K | 0 | |
| 28 Feb 2023 | -£19K | £2 | £357K | £358K | 0 |
| 28 Feb 2022 | -£17K | £467 | £357K | £354K | 0 |
| 28 Feb 2021 | -£13K | £15K | £357K | £349K | 0 |
| 29 Feb 2020 | -£8,821 | £339K | £347K | 0 | |
| 28 Feb 2019 | -£8,821 | £28 | £496K | £505K | |
| 28 Feb 2018 | £100 | £26 | £808K | £808K | |
| 28 Feb 2017 | £100 | £3,118 | £731K | £731K | |
| 29 Feb 2016 | £100 | £794 | £577K |
Where BT1 Dev Limited is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 0DH on a map.
Other trade companies in HA2
- KJP Engineering LtdElectricians
- JNJ Engineering LimitedCivil engineering
- Notting Hill Sew LtdRepair services
- Grandwellautos LtdMotor traders
- Multisteel Powdercoating LtdPainters and decorators
- Neon Systems LtdElectricians
- Firstclass Facilities LtdCleaning companies
- PMD Construct LtdBuilders
Also registered at this address
11 other companies use the same registered office as BT1 Dev Limited.
- Align Flooring LtdFloor and wall tilers
- Argyle House Property Development LimitedProperty developers
- Biotech Mechanical LimitedElectricians
- HJ Homes LimitedBuilders
- Living Landscapes and Design LimitedLandscapers and gardeners
- MC (Contracting) LimitedProperty developers
- McCabe Builders (London) LtdProperty developers
- Pontiac LimitedProperty developers
- R D J Shutters LtdJoiners and carpenters
- Sheraton Building Projects LimitedProperty developers
- Twiglets Developments LimitedProperty developers
What happens if BT1 Dev 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 24 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 25 Nov 2026 to 24 Dec 2026 | £150 |
| 1 to 3 months late | 25 Dec 2026 to 24 Feb 2027 | £375 |
| 3 to 6 months late | 25 Feb 2027 to 24 May 2027 | £750 |
| More than 6 months late | From 25 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 25 Feb 2027 | £200 |
| 3 months late | 24 May 2027 | another £200 |
| 6 months late | 24 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 24 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
- 09457629
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 February 2015 (11 years ago)
- Registered office
- Printing House, 66, Lower Road, Harrow, HA2 0DH
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 24 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 25 February 2026
- Charges (mortgages)
- 5 outstanding of 5 registered
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Harrow
Other active property development companies registered in Harrow.
- BTF Group Ltd2026
- Build Place Ltd2023
- Buildcon Ltd2015
- Building Guidance Partnership Ltd2023
- Building Innovations & Design Limited2021
- Building Revive Ltd2025
- Bunclody Limited2010
- Buxwood Limited2006
All property development companies in Harrow · All trades in Harrow · Property developers across the UK
Frequently asked questions
When are BT1 Dev Limited's accounts due?
BT1 Dev Limited's next accounts are due at Companies House by 24 November 2026 (in 43 days), covering the period to 24 February 2026.
When is BT1 Dev Limited's CT600 due?
The CT600 for the period to 24 February 2026 is due at HMRC by 24 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 25 November 2026.
Is BT1 Dev Limited still trading?
BT1 Dev 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 BT1 Dev Limited do?
BT1 Dev Limited is registered under Development of building projects (SIC 41100).
How old is BT1 Dev Limited?
BT1 Dev Limited was incorporated on 25 February 2015, 11 years ago.
What is the penalty if BT1 Dev 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 BT1 Dev 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.