New Build Mortgages: What Buyers Need to Know

🏗️ New Build Mortgages: What Buyers Need to Know


  • New builds often require a slightly larger deposit.
  • Lenders can have stricter criteria for flats.
  • Developers may offer incentives — which lenders must approve.
  • Mortgage offers may need extending due to build delays.
  • Preparation is key when buying off-plan.

1 | Are New Build Mortgages Different?

Yes — slightly.

Lenders see new builds as higher risk because:

  • They can carry a “new build premium”
  • Prices may soften once no longer brand new
  • Flats can be more volatile than houses

Because of this, deposit requirements can differ.


2 | How Much Deposit Do You Need?

For new build houses:

  • 5–10% deposit may be available.

For new build flats:

  • Often 10–15% minimum with many lenders.

Criteria varies between lenders, so product choice matters.


3 | Developer Incentives (And Why They Matter)

Developers may offer:

  • Deposit contributions
  • Stamp Duty contributions
  • Upgraded fixtures & fittings
  • Cashback

These incentives must be declared to the lender.

Too many incentives can reduce the amount you’re allowed to borrow.

Transparency is crucial.


4 | Buying Off-Plan

When buying before construction completes:

  • Mortgage offers usually last 6 months
  • Some lenders offer longer validity
  • Delays can mean re-underwriting

It’s important to choose a lender suited to build timelines.


5 | Valuations Can Be Different

Surveyors assess:

  • Comparable properties
  • Local demand
  • Incentives included
  • Build quality

A down valuation can affect your borrowing and deposit required.


6 | When New Builds Make Sense

New builds can suit buyers who:

  • Want lower maintenance costs
  • Prefer energy efficiency
  • Like modern layouts
  • Qualify for developer schemes

But they require careful lender matching.


📞 Thinking of Buying a New Build?

This website provides information only and does not offer advice.

We can introduce you to specialist advisers who can:

  • Explain new build lender criteria
  • Assess deposit requirements
  • Review developer incentives
  • Help you choose suitable options

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