Heron Financial arranged a £414,000 mortgage at 90% LTV for joint first-time buyers in Hertfordshire, one working in energy analytics, the other in animal care, purchasing a £460,000 three-bedroom semi-detached house. The £46,000 deposit was made up of £20,000 in personal savings and a £26,000 family gift, with the loan stretching the limits of 90% LTV lending on two unevenly weighted joint incomes. Heron Financial placed the case with Halifax on a fixed rate, and the mortgage completed in May 2026.
The clients
The clients were a couple in Hertfordshire, on the northern edge of the London commuter belt, buying their first home together. One applicant works in energy analytics, a professional role in a technical sector with a strong income profile. The other works in animal care, a vocational role with a more modest salary. Both are paid through PAYE, with clean evidenced income through payslips and P60s.
They came to Heron Financial with £20,000 of personal savings and £26,000 from family, together making up a 10% deposit on a £460,000 purchase. The income shape was the interesting part of the case. The two applicants earn at noticeably different levels, and how a lender combined the incomes for affordability mattered for whether the £414,000 loan landed cleanly.
The case at a glance
- Buyers: Joint first-time buyers, employed
- Nationality: British
- Occupations: Energy analytics professional + animal care worker
- Property type: Three-bedroom semi-detached house
- Location: Hertfordshire
- Purchase price: £460,000
- Deposit: £46,000 total, £20,000 personal savings plus £26,000 family gift (10%)
- Loan amount: £414,000
- LTV: 90%
- Lender: Halifax Intermediaries
- Repayment method: Capital and interest
- Completion: May 2026
The challenge
A 90% LTV joint first-time buyer mortgage is well within mainstream lender territory. What made this case worth getting right was the combination of the loan size and the income shape.
90% LTV at £414,000. Several mainstream lenders cap their 90% LTV lending at lower loan sizes, allowing the higher LTV only up to £400,000 or £500,000 before tightening the cap. £414,000 sits just above one of those common thresholds, so the case needed a lender genuinely comfortable holding 90% LTV in this loan band, not just one that advertises it for smaller loans.
Unevenly weighted joint incomes. With one applicant in energy analytics (typically higher-earning) and one in animal care (typically lower-earning), the affordability calculation depends heavily on how the lender combines the two. Some lenders give equal weight to each income within the loan-to-income cap. Others apply different multiples for primary and secondary earners. The same combined income on paper can produce different “lender-acceptable” loan sizes depending on the lender’s approach.
Loan-to-income math. A £414,000 loan on standard 4.5x lending implies combined income of c.£92,000+. That’s achievable for an established energy analytics professional alone, or comfortably for the combined pair, but lender choice matters for confirming the multiple holds without exception underwriting.
Mixed deposit structure. Two sources, £20,000 savings and £26,000 family gift, needed clean documentation: bank statements showing the savings build-up, and a signed gift letter from the donor confirming the funds are non-repayable and carry no claim on the property. Done up front, this is a non-event. Missed or sloppy, it slows underwriting.
Hertfordshire property prices. A three-bed semi at £460,000 is a typical Hertfordshire first-home price point for couples upsizing from rented flats into family-suitable property. The market makes the loan size unavoidable for many first-time buyers in the area, which is exactly why lender choice at 90% LTV on £400,000+ loans matters so much.
How Heron Financial approached the recommendation
The Heron adviser focused on lender appetite at the loan size, the affordability shape for the mixed income levels, and gift documentation in parallel.
Lender mapping for 90% LTV above £400,000. Heron Financial narrowed the panel to lenders genuinely comfortable with 90% LTV lending at £414,000. Not every advertised 90% LTV lender holds that LTV cap evenly above the £400,000 threshold.
Joint affordability check. The adviser confirmed how each shortlisted lender would combine the two incomes, particularly how the secondary income contributed to the loan-to-income calculation, and confirmed the £414,000 loan sat comfortably within affordability rather than at the edge.
Gift documentation up front. The £26,000 family gift was structured cleanly: signed gift letter from the donor confirming the funds are non-repayable, with no claim on the property, plus donor ID and source-of-funds evidence prepared and submitted alongside the application.
Lender choice. Halifax was the right home for this case. They have workable criteria for 90% LTV lending at higher loan sizes, take a clean approach to joint incomes with different weights, and offered competitive pricing at the band.
Product choice. A fixed rate gave the clients payment certainty in the early years of their first home together. At 90% LTV on a £414,000 loan, any rate change would be felt sharply on the monthly payment, so locking in the rate for a defined period was a sensible choice for a couple stepping into their first joint financial commitment of this size.
The outcome
The mortgage completed in May 2026. The clients moved into their first home with:
A £414,000 mortgage at 90% LTV
A fixed rate on capital and interest repayment
Both deposit sources cleanly documented and accepted
A first home in the London commuter belt that comfortably fits the household’s combined income
What this means for buyers in a similar position
If you’re a working couple in the London commuter belt with one of you in a higher-earning professional role and one in a more modest vocational role, lender choice matters more than the headline rate comparison sites suggest. Loan size at 90% LTV varies by lender, some cap the higher LTV at lower loan sizes, and how lenders combine joint incomes with significantly different weights also varies. The same household income on paper can produce a borrowing range that varies meaningfully between lenders. A broker who knows which lenders work hardest on your specific income shape and loan size is the difference between a clean offer and a near-miss.
FAQs
Can two people with very different incomes get a joint mortgage?
Yes. Joint mortgages with significantly different income levels are common, and most UK lenders are well set up to combine the incomes for affordability purposes. Some lenders give equal weight to each income within the loan-to-income cap; others apply different multiples for primary and secondary earners. Lender choice can shift the borrowing capacity meaningfully.
Can you get a 90% LTV mortgage on a £400,000+ house?
Yes, but the lender market is narrower than at lower loan sizes. Several mainstream lenders, including Halifax, lend at 90% LTV on loans approaching and exceeding £400,000. Many other lenders that advertise 90% LTV mortgages tighten their LTV cap to 85% or lower above certain loan size thresholds. Broker advice helps identify which lenders are genuinely open at your level.
Can your deposit be made up of savings plus a family gift?
Yes. A deposit combining personal savings and a family gift is one of the most common first-time buyer structures with UK lenders, including at 90% LTV. The donor signs a gift letter confirming the funds are non-repayable and provides ID and source-of-funds evidence. The savings element is evidenced through bank statements.
How much can two PAYE workers borrow together?
On standard 4.5x lender income multiples, two PAYE workers can typically borrow 4.5x their combined income, so combined income of £92,000 supports a loan of around £414,000. Some lenders offer higher multiples (5x or more) for stronger profiles, particularly where one or both applicants are in qualified professional roles.
Is 90% LTV a good idea for first-time buyers in expensive areas?
For many first-time buyers in higher-priced markets like the London commuter belt, 90% LTV is the realistic route into a first home. It strikes a workable balance, an affordable 10% deposit, a broad lender market, and better pricing than 95% LTV. Larger deposits unlock better rates further down the LTV ladder, but in higher-priced areas, saving to 15% or 25% can mean waiting years longer.
