New build house advice

[Madam61]

My wife and I are purchasing a new build house from an independent builder, we are looking for some advice.

Survey
We have been advised not to get a survey, the property has a 10Y warranty

Do we need one?

Valuation
Our offer was accepted and the banks valuation met this, a concern of ours was that the warranty on the house had a market value of £40k under what we offered

Should we be alarmed?

Thanks in advance for your help

I build/sell newbuilds.
the warranty only usually needs to cover the rebuild value not the sale value and most people don't bother with a survey. some do like to hire "professional snaggers" but it depends what's actually offered from the seller as they may fix actual defects for you but nothing simply cosmetic, so a snag list wouldn't be accepted anyway.

Thanks peeblet
The warranty specifically states sum insured £x amount and market value £x+. The market value is less than what the bank valued it, is this a concern??

I mean how good is a warranties valuation, would it be similar to a survey?

We are looking into getting a snagging survey and agreeing this with the builder.

ah I see. could happen if they sorted their warranty a while ago and used market values which are now out of date.
The builder should be able to get an updated version pretty quickly from the warranty provider by providing them a revised market value report. I'd go back and ask them to do this for comfort.

Thanks for the advice, is that approach acceptable?