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HTG Mortgages

HTG Mortgages

New Build Mortgages

Last Updated: August 2026

Featured in The Telegraph • Daily Mail • The Times • Sky News

Buying a brand new home comes with its own mortgage considerations: build delays, valuations, and developer incentives that can affect how much you can borrow. We have no relationship with any developer, so our advice is about the right mortgage for you, not about selling a particular plot.

Extended mortgage offers to cover build delays, some lenders offer up to 12 months instead of the usual 3 to 6.

No ties to any developer. Our advice is independent.

Guidance on how developer incentives can affect your mortgage.

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As featured in…

Harry Goodliffe, director and FCA-authorised mortgage advisor at HTG Mortgages, at his desk

Meet your Advisor

Harry Goodliffe

  • FCA Authorised
  • Director & Mortgage Advisor

“I‘m not about confusing jargon or passing you from person to person. From our first chat to the day you get the keys, you’ll deal directly with me. I‘ll keep you updated, answer any burning questions, and do everything I can to make the whole process as stress-free as possible.”

Let’s Talk About Your Mortgage

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The new build mortgage process

1

Step 1

First Chat

Get in touch to talk through your build’s timeline, the development, and what you’re looking to borrow.

2

Step 2

Review

We review your timeline and the development, including any incentives on offer, to see how they affect your mortgage.

3

Step 3

Lender Match

We match you to a lender with an offer period that suits your build timeline.

4

Step 4

Application

We handle your application through to offer, keeping it valid through to completion wherever possible.

About

Our approach.

Why choose HTG Mortgages?

Here’s what matters most when you’re buying a new build:

No developer relationships

We’re not tied to any developer or new build site. Our advice is about your mortgage, not about selling you a plot.

Offers that cover build delays

We help make sure your mortgage offer stays valid even if completion is delayed, which happens often with new builds.

Valuation guidance

If a lender’s valuation comes in below the agreed price, we can explain your options and what to do next.

Clarity on developer incentives

We explain how incentives like stamp duty contributions or free upgrades can affect the loan-to-value your lender will use.

Speak to an expert

New build purchases come with their own pressures, from build delays to valuations and developer incentives. We’re not tied to any developer, so our advice is about getting the right mortgage for you and keeping your offer on track. Get in touch and we’ll talk you through what’s possible.

Get in touch

How HTG Mortgages Can Help

We help buyers deal with the parts of a new build purchase that catch people out, including timing, valuations and incentives. We can help with:

  • Finding a lender with an offer period that suits your build timeline
  • Explaining how a down-valuation would be handled
  • Making sense of developer incentives and how they affect your mortgage
  • Supporting you through to mortgage offer

Who new build mortgages can help

This page is for you if:

  • You’re buying a property that hasn’t been built yet or is still under construction
  • You’re concerned about your mortgage offer expiring before completion
  • You’ve been offered incentives by a developer and want to know how they affect your mortgage
  • You want independent advice, not advice tied to the developer’s own recommended broker

New build purchases have their own timeline pressures. Get in touch early, ideally before you exchange, so we can make sure your mortgage is set up to match your build’s schedule. If this is your first purchase, our first-time buyer page covers deposits and the application in more detail. We work with buyers across Hampshire, including Eastleigh.

Related: Deposit Unlock Has Closed, New Build Incentives and Your Mortgage, New Build Mortgage Offer Expiring, New Build Down Valuation.

Why use HTG’s mortgage services?

Available 24/7, so we are always there to help when you need us

We are an independently owned, whole-of-market mortgage broker offering first-charge mortgages

We provide unrivalled customer service, ensuring that you get the care you deserve

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Let’s get your mortgage sorted

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Frequently Asked Questions

Have another question?

Standard mortgage offers usually last 3 to 6 months, but new build delays can run longer than that, so several lenders offer extended validity specifically for new build purchases. Some go up to around 9 to 12 months in total, which gives more breathing room if your completion date slips, as it often does.

If your lender offers an extension, it’s usually not automatic, you’ll need to request it, and the lender may ask for an updated credit check or a fresh valuation before agreeing. This is exactly why the choice of lender matters on a new build purchase, since not all of them handle delays the same way.

New builds can be more prone to a cautious valuation than an equivalent existing home, partly because there’s less to compare them against and partly because a brand new home can lose some value the moment it’s lived in. It’s not universal and depends on the development and area, but it’s worth being aware of before you agree a price.

This is called a down-valuation, and there are a few ways to deal with it: go back to the developer to renegotiate, challenge the valuation with recent comparable sales, look at a higher loan-to-value product, try a different lender, or increase your deposit to cover the gap. We’d talk through which option makes sense for your situation.

They can. If the value of incentives a developer offers, such as paying your stamp duty or contributing to legal fees, goes above roughly 5% of the purchase price, some lenders will treat the property’s true value as the price minus that excess incentive, rather than the full headline price. It’s important to declare all incentives to your lender, since undeclared incentives can cause problems later.

No, Deposit Unlock closed to new completions in April 2026. There are current alternatives worth knowing about, including the Own New Rate Reducer scheme, where a participating developer contributes towards reducing your mortgage rate, and New Build Boost, which combines a 5% deposit with an interest-free equity loan. We can talk you through what’s actually available now rather than what used to be.

Most lenders require a structural warranty on a new build, typically covering 10 years, with an initial builder defects period followed by structural-only cover. NHBC’s Buildmark is the most common, though other accepted providers exist. Your lender will usually want to see evidence of the warranty as part of your application.

No, and that’s deliberate. We’re not tied to any developer or new build site, so our advice is about the right mortgage for you, not about selling a particular plot.


Harry Goodliffe
Written by Harry Goodliffe
Director & Mortgage Adviser, HTG Mortgages  ·  FCA Authorised (1017945)
CeMAP Qualified  ·  Featured in National Press  ·  South England Prestige Awards 2026/27 winner

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