Heron Financial arranged a £150,000 mortgage with NatWest Intermediary Solutions at an initial fixed rate of 4.04% on a 5-year fix for joint applicants buying a £360,000 detached family home in South Yorkshire. With a £210,000 deposit, the loan sat at 42% LTV, comfortably inside the sub-60% bracket where the cheapest mainstream rates live.
The clients
The clients were a couple in their late twenties to early thirties with one child, buying a detached family home in South Yorkshire. One worked as a Teacher, the other as a Steel Worker. With a £210,000 deposit on a £360,000 purchase, they were in a strong financial position and wanted a long stretch of payment certainty as they settled into the new house.
The case at a glance
- Buyers: Joint applicants, age band 25–34, employed, with one dependant
- Occupations: Teacher and Steel Worker
- Property type: Detached house
- Location: South Yorkshire
- Purchase price: £360,000
- Deposit: £210,000 (~58%)
- Loan amount: £150,000
- LTV: 42%
- Lender: NatWest Intermediary Solutions
- Product: 5-Year Fixed Rate
- Initial fixed rate: 4.04%
- Repayment method: Capital and interest
Why this case mattered
Loan-to-value is one of the biggest single levers on mortgage pricing. Most lenders price products in tiers, and the cheapest mainstream rates sit at or below 60% LTV. Anything that nudges a borrower under that threshold can meaningfully reduce the rate, the monthly payment and the total interest paid across a fixed term.
At 42% LTV, the clients sat well below that line and well clear of any pricing step. With a clean income picture across two employed earners, the case fundamentals were strong, which moved the conversation from “can we get approved?” to “which lender prices this case the best?” That’s a different and more rewarding conversation, but it still depends on choosing the right lender for the household’s specific affordability profile.
NatWest Intermediary Solutions, the broker channel of NatWest, is a regular fit for clean residential cases at lower LTVs and was the right lender at the time of application for the rate, criteria and service standards available.
How Heron Financial approached the recommendation
The Heron adviser worked through affordability against the clients’ recorded household income, confirmed the deposit position against the £360,000 purchase price, and matched the borrowing to a lender that would price the case sharply at sub-60% LTV. With the clients prioritising long-term payment certainty for the family home, Heron Financial recommended NatWest Intermediary Solutions on a 5-year fixed rate at 4.04%.
The application was submitted in January 2025.
The outcome
The formal mortgage offer was issued in January 2025, around ten days after submission. The purchase completed in March 2025. The clients moved into their new South Yorkshire home with a fixed monthly payment locked in for the next five years.
What this means for buyers in a similar position
Buyers who can put down 40% or more of the purchase price unlock the cheapest end of the mainstream mortgage market. The practical question stops being “what’s the best 90% rate” and becomes “which sub-60% lender prices this case best for our income, property and timing”.
Working with a broker who tracks lender pricing across the LTV tiers is the difference between a fairly good rate and the right rate for the case.
For families buying outside London with sale proceeds or family help building the deposit, the strategic value of falling under the 60% LTV threshold is often more significant than borrowers realise. Even a small adjustment to the offer or the deposit can pay for itself many times over across a 5-year fix.
FAQs
What's the cheapest LTV bracket for mortgage rates?
The cheapest mainstream pricing typically begins at or below 60% LTV. In this Heron Financial case, the clients sat at 42% LTV and secured a 4.04% rate with NatWest Intermediary Solutions on a 5-year fix
Can I get a NatWest mortgage as a joint applicant?
Yes. NatWest Intermediary Solutions is the broker channel of NatWest and is regularly considered for joint applications across most LTV bands. In this Heron Financial case, joint applicants secured a £150,000 mortgage with NatWest at 4.04% on a 5-year fix.
How much deposit do I need to drop into the cheapest LTV bracket?
A deposit of at least 40% of the purchase price will typically place a borrower in the sub-60% LTV bracket. The precise number depends on the property valuation rather than the offer price.
Why choose a 5-year fixed rate at low LTV?
A 5-year fix gives a long stretch of payment certainty. At low LTV, the headline rate is already competitive, so locking it in for five years removes the short-term refinance risk and gives the household time to plan around a stable monthly payment.
How fast can a NatWest mortgage offer be issued?
Timelines vary. In this Heron Financial case, the formal mortgage offer was issued ten days after submission. Clean cases at lower LTVs can move quickly when documentation is presented well.
