Buying a new‑build home is exciting — everything is brand new, energy‑efficient, and move‑in ready. But the mortgage process can feel a little different compared to buying an older property.
That’s where the right guidance makes all the difference.

Here’s everything you need to know about new‑build mortgages, how they work, and how we help clients buy new homes with confidence.

What Is a New‑Build Mortgage?

A new‑build mortgage is simply a mortgage used to buy a property that has been newly constructed  (never been lived in) or converted — typically from a developer.
However, lenders treat new‑builds differently because:

• Values can fluctuate during construction
• Developers set exchange deadlines
• Build completion dates may shift
• Some lenders cap borrowing on certain property types

Because of this, the choice of lender and timing matters more than usual.

Why Do Lenders Treat New‑Builds Differently?

Lenders see new‑build properties as slightly higher risk. That’s because:

Price protection

New homes can sometimes be priced at a “premium” and may drop slightly after the development fills up.

Build delays

Not every home is completed on time — so mortgage offers may need extending or refreshing.

Small property types

Studio flats, high‑rise apartments, and properties above commercial units may face stricter criteria.

This doesn’t mean new‑build mortgages are hard — you just need the right lender for your specific development.

Deposit Requirements for New‑Build Mortgages

Deposit rules depend on whether you’re buying a house or a flat.

New‑Build Houses

• Typically 5–10% deposit
  Many mainstream lenders offer 90–95% mortgages on new‑build houses.

New‑Build Flats

• Usually require 10–215% deposit
  Some lenders limit the percentage they will lend due to higher perceived risk.

If you want to keep your deposit as low as possible, we can match you with lenders who are more flexible on new‑build lending.

Mortgage Offer Validity 

A normal mortgage offer lasts 6 months.
Some lenders offer:

• 9‑month offers
• 12‑month offers
• Offer extensions for delayed completions

This can be crucial for off‑plan purchases.

Buying Off‑Plan: How It Works

Buying off‑plan means securing a property before it’s built.

You typically need to:

• Reserve the plot with a small fee
• Exchange contracts within 28 days
• Complete later when the build is finished

I help clients line up lenders who are comfortable with off‑plan timescales and offer long‑validity mortgage offers so you’re fully protected.

New‑Build Incentives — What You Can and Can’t Use

Developers often offer incentives such as:

• Cashback
• Legal fee contributions
• Stamp duty contributions
• Flooring or upgrades
• Deposit top‑ups

Some lenders allow these, but others restrict certain incentives because they can artificially inflate the apparent value.

Shared Ownership & New‑Builds

Many new‑build developments offer Shared Ownership, a great option for buyers needing a lower deposit or smaller mortgage.

You can buy:

• A 10–75% share
• With a deposit from 5% of your share

If you’re not sure whether Shared Ownership or a standard mortgage is best, we can compare both options for you.

New‑Build Snagging and Surveys

Even brand‑new homes need checking. Consider:

Snagging report

A private inspector checks for defects before you complete.

New‑home warranty (NHBC or similar)

Most new‑build homes come with a 10‑year warranty, which lenders like.

This protects both you and your mortgage lender.

Why Work With a Broker for a New‑Build?

New‑build purchases are fast‑paced. You often need:

• A mortgage in principle before reserving
• Solicitors ready quickly
• A lender who allows incentives
• An offer long enough to cover build delays

We regularly handle new‑build cases and coordinate everything with the developer, lender, and solicitor to keep the process running smoothly.

Thinking About Buying a New‑Build? Let’s Chat

Whether you’re buying off‑plan, moving into a new development, or exploring Shared Ownership, We can help you find the right mortgage and guide you through the entire process.