- Companies
- Property developers
- Mildenhall
- 121 Propco Limited
121 Propco Limited
- Company number
- 17451444
- Incorporated
- 10 Sep 2026
- Registered office
- 82, Unit A, James Carter Road, Mildenhall, IP287DE
- Nature of business
- Development of building projects
121 Propco Limited is a newly incorporated private limited company registered in Mildenhall, company number 17451444, one of 47 property development companies in Mildenhall. Its next accounts are due at Companies House on 10 June 2028, and its first CT600 is due at HMRC on 9 September 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where 121 Propco Limited is registered
The registered office is in Mildenhall (IP28). Show IP287DE on a map.
Other trade companies in IP28
- Zamzam Global Travel and Tours LtdMotor traders
- Rowley Construction Solutions LtdBuilders
- Palatone LtdRepair services
- Local Roofing N Chimneys LimitedRoofers
- SC Joinery and Building Solutions LtdBuilders
- Scuffiq LtdMechanics and garages
- DG Classic Cars LtdMotor traders
- E.B. Fitch Historic Buildings Specialists LtdPainters and decorators
Also registered at this address
11 other companies use the same registered office as 121 Propco Limited.
- Apex Autowerks LtdMotor traders
- Exact Fitting LimitedFinishing trades
- Hey Ev LtdElectricians
- Motor Vehicle Lab LtdMechanics and garages
- Palatone LtdRepair services
- Raben Construction LtdCivil engineering
- Simpler Homes LimitedSpecialist contractors
- Wardstone Services LtdCleaning companies
- We Do Parties LtdInstallers
- Yellow Door Projects LtdCivil engineering
- Zplash LtdMachinery repair and installation
What happens if 121 Propco 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 10 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Jun 2028 to 10 Jul 2028 | £150 |
| 1 to 3 months late | 11 Jul 2028 to 10 Sep 2028 | £375 |
| 3 to 6 months late | 11 Sep 2028 to 10 Dec 2028 | £750 |
| More than 6 months late | From 11 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2029 | 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
- 17451444
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 September 2026
- Registered office
- 82, Unit A, James Carter Road, Mildenhall, IP287DE
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
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 Mildenhall
Other active property development companies registered in Mildenhall.
- Ab Building & Roofing Services Limited2017
- Ambra Holdings Ltd2026
- Bamboo Homes and Developments Ltd2018
- Bridge Housing Facilities & Support Ltd2026
- Brookmarsh Developments Ltd2025
- Capybara Properties Ltd2025
- Chandler Solutions Limited2023
- Club Orange Limited2017
All property development companies in Mildenhall · All trades in Mildenhall · Property developers across the UK
Frequently asked questions
When are 121 Propco Limited's accounts due?
121 Propco Limited's next accounts are due at Companies House by 10 June 2028 (in 607 days), covering the period to 30 September 2027.
When is 121 Propco Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 9 September 2027, due by 9 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is 121 Propco Limited still trading?
121 Propco 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 121 Propco Limited do?
121 Propco Limited is registered under Development of building projects (SIC 41100).
How old is 121 Propco Limited?
121 Propco Limited was incorporated on 10 September 2026, less than a year ago.
What is the penalty if 121 Propco 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 121 Propco 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.