- Companies
- Builders
- Buckingham
- Isa Building Solutions Ltd
Isa Building Solutions Ltd
- Company number
- 10183626
- Incorporated
- 17 May 201610 years trading
- Registered office
- 5 Addison Road, Steeple Claydon, Buckingham, MK18 2NP
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Isa Building Solutions Ltd is a 10-year-old private limited company registered in Buckingham, company number 10183626, one of 33 building contractors in Buckingham. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £4,299 (+6.8%) on the year before, to £68K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £99K against £45K owed within a year: 2.2 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £68K | £0 | £99K | £45K | 1 |
| 31 Mar 2024 | £64K | -£7,993 | £92K | £43K | 2 |
| 31 Mar 2023 | £47K | £3,961 | £106K | £74K | 2 |
| 31 Mar 2022 | £20K | £0 | £72K | £65K | 2 |
| 31 Mar 2021 | £4,851 | £27K | £79K | £87K | 3 |
| 31 Mar 2020 | £14K | -£7,784 | £47K | £40K | 3 |
| 31 Mar 2019 | £20K | -£6,887 | £37K | £25K | 2 |
| 31 Mar 2018 | £20K | -£8,728 | £36K | £17K | 0 |
| 31 Mar 2017 | £16K | £7,095 | £22K | £6,303 | 3 |
Where Isa Building Solutions Ltd is registered
The registered office is in Buckingham (MK18), in the Buckinghamshire local authority area, South East. Show MK18 2NP on a map.
Other trade companies in MK18
- S L Haynes Master Thatcher LimitedRoofers
- Horizon Solar Group LtdElectricians
- RFR Custom Car Bodyworkz LtdMechanics and garages
- Used Truck and Trailer Sales LtdMotor traders
- Gatorplay LtdInstallers
- Automobile Kits LtdMotor traders
- Emily Touch LtdCleaning companies
- Amco Mechanical LtdPlumbers and heating engineers
What happens if Isa Building Solutions 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 10183626
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 May 2016 (10 years ago)
- Registered office
- 5 Addison Road, Steeple Claydon, Buckingham, MK18 2NP
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 16 May 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Buckingham
Other active building contractors registered in Buckingham.
- Isaac Investment Group Ltd2026
- J White Builders Ltd2017
- Jassi Building Contractors Ltd2021
- JW Design & Build Ltd2015
- L.A Landscapes & Groundworks Ltd2025
- M Carter Brickwork Limited2007
- Nexplan Ltd2024
- O'Dell Building Services Ltd2019
All building contractors in Buckingham · All trades in Buckingham · Builders across the UK
Frequently asked questions
When are Isa Building Solutions Ltd's accounts due?
Isa Building Solutions Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Isa Building Solutions Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Isa Building Solutions Ltd still trading?
Isa Building Solutions Ltd 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 Isa Building Solutions Ltd do?
Isa Building Solutions Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Isa Building Solutions Ltd?
Isa Building Solutions Ltd was incorporated on 17 May 2016, 10 years ago.
What is the penalty if Isa Building Solutions 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 Isa Building Solutions Ltd 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.