Avanti Windows Limited
Avanti Windows Limited is a company on the UK register of companies (Companies House no. 02214699), classified under the glazing trade (SIC 43342, Glazing), with a registered office in NG31, Grantham.
| Company number | 02214699 |
|---|---|
| Incorporated | 1988 |
| Company type | Ltd |
| Last accounts filed | 2025 |
| SIC | 43342 - Glazing |
| Registered office | UNIT 7 & 7A AUTUMN PARK IND. ESTATE, DYSART ROAD, NG31 7DD |
Source: Companies House free company data. Search company number 02214699 on the Companies House register for the current position.
Before you contact a Grantham installer
A full double glazing job in Grantham typically lands between £2,600 and £7,700 (local cost factor 0.85×), depending on opening count and spec. Around 10 conservation areas including central Grantham.
- Check the company is current and not in liquidation on the Companies House register.
- Confirm FENSA or CERTASS registration on the relevant scheme's own "find an installer" search - membership is per-company and can lapse.
- Get the quote in writing, itemised per window or door, and check the guarantee is insurance-backed.
- Ask for two recent installs you can look at - around Barrowby, Great Gonerby, Long Bennington or your own street.
Our guide to comparing double glazing quotes and FENSA vs CERTASS explainer go into detail.
Windows and doors in Grantham
Georgian High Street townhouses, Victorian terraces around Belton Lane, plus interwar semis in Barrowby Gate and Great Gonerby.
Dominant era of housing stock: Georgian to Victorian.
Heritage note: Around 10 conservation areas including central Grantham.