🏗️ 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

