Your Home Finance
The cheapest buy-to-let mortgage isn't always the most profitable.
Whether you're buying personally or through a company, rental coverage and structure usually matter more than the cheapest rate.
30+ years
landlord advice
Limited company
expertise
Portfolio
landlords
Stress-test
expertise
How your case is assessed
How lenders assess buy-to-let
Lenders look at the property's income, how you own it, and your wider portfolio — not just whether you have a deposit.
Rental coverage
Rent typically needs to cover 125–145% of the mortgage payment at a stress-test rate. Stronger coverage widens lender choice.
Personal or limited company?
Higher-rate taxpayers often prefer company ownership for tax — company mortgages usually cost a little more. Structure and rate trade off.
Deposit and experience
Most lenders want 20–25%+. First-time landlords and thinner deposits narrow the panel; portfolio landlords face extra stress tests.
Portfolio size and stress
Four or more properties usually means portfolio underwriting across the whole book — not just the next purchase.
You don't need to guess which BTL lenders fit — we map rent, structure and portfolio before any hard search.
Specialist insight
Not every BTL lender treats your case the same way
First property · thinner deposit
Higher challenge
Narrower panel · higher coverage ratios · first-time landlord criteria bite harder than many comparison sites admit.
Strong coverage · clear structure
More lender choice
Broader specialist and high-street BTL panels · clearer path when rent stress, deposit and ownership structure align.
Independent reviews
Verified client reviews on Reviews.io
Live verified reviews — not cherry-picked on-page quotes.
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Your adviser
Jay Sabine
Expert mortgage adviser specialising in complex cases including adverse credit, self-employed borrowers, and first-time buyers. All advice is tailored to your individual circumstances.
Content reviewed: 3 August 2026
CeMAP awarded by The London Institute of Banking & Finance. Cert CII (MP) awarded by the Chartered Insurance Institute.
Specialist in buy-to-let and portfolio lending
Helping clients with complex credit histories for over 30 years · CeMAP, Cert CII (MP) · FCA regulated
“People often spend weeks chasing a cheaper rate while missing the decision that actually affects long-term profitability.”
Reviewed by Jay Sabine · Mortgage adviser · 30+ years' experience
Lived experience
Mistakes we repeatedly see
Not theory — patterns that keep showing up when landlords chase rate first and structure second.
Shopping the rate before modelling the structure
A slightly cheaper personal rate can cost more than a limited-company deal once tax is included — especially for higher-rate taxpayers.
Assuming every high-street BTL lender will look
First-time landlords, thinner deposits and portfolio stress quietly remove most of the panel before the application starts.
Treating one property like the whole book
With four or more mortgaged properties, lenders stress the portfolio — not just the next purchase. Wrong panel = another hard search.
Applying when coverage is thin
If rent won't clear the stress test at the tier you want, waiting or adjusting deposit/structure often beats a hopeful decline.
Real client scenarios
How we've helped landlords
Based on genuine cases we've helped with. Personal details have been changed to protect privacy.
Higher-rate taxpayer — personal vs company
- Property 2
- Ltd company
- Tax modelled
- Stronger overall
Situation
Higher-rate taxpayer buying property 2 — comparison sites pushed personal ownership.
Challenge
Cheaper personal rate looked better on paper; tax cost hadn't been modelled.
What changed
Switched to limited-company purchase with a specialist SPV lender — slightly higher rate, stronger overall position.
Outcome
Right structure first — then the product.
Why it worked
Tax and rate modelled together. The comparison-site winner was the expensive long-term choice.
Portfolio remortgage — high street declined
- 5 properties
- Whole-book stress
- Specialist placed
Situation
Portfolio landlord (5 properties) remortgaging one unit — high street declined.
Challenge
Whole-book stress failed — the decline was portfolio criteria, not the single property.
What changed
One specialist portfolio lender, packaged once across the book — no hopeful high-street trail.
Outcome
Placed without another hard-search footprint.
Why it worked
Treated as a panel mismatch, not a no. Matching the whole book avoided wasted applications.
What happens after you get in touch
From first contact to a clear answer
What happens when you get in touch — no hard search at this stage.
- 1
We understand your property, strategy and investment goals before recommending lenders (no hard search)
- 2
Jay reviews rental coverage, tax structure and portfolio position
- 3
We discuss the appropriate route — honestly, without promising approval
- 4
If proceeding: Agreement in Principle → application → completion
Reassurance
- Free initial review — before any hard credit search
- We model personal vs limited company before you chase rates
- Wrong lender first hurts more than waiting — we guide the sequence
Before you enquire
What we'll ask you on the first call
Straightforward questions — no hard credit search at this stage.
- Expected rental income
- Deposit available
- Ownership structure (personal or company)
- Long-term plans for the property or portfolio
Advisory promise
When we might tell you to wait
We won't always tell you to apply today.
We may advise waiting where rental coverage is thin, deposit is short of the tier you need, or switching to a limited company first would improve the long-term position more than rushing a personal application.
If waiting or restructuring would meaningfully widen options, we'll say so before another footprint goes on your file. We give advice — not just applications.
Straight answers
Common questions about buy-to-let mortgages
Our promise
What we'll never do
- Tell you to apply if it won't work
- Send applications everywhere
- Recommend borrowing beyond your budget
- Hide bad news
We don't sell the cheapest BTL rate. We help you understand which structure and lender fit.
Find out what's possible
Tell us about the property, rent and ownership structure — we'll assess what's realistically possible.
We don't recommend lenders until we've understood your property, rental figures and long-term plans.
£500 adviser fee — payable on completion.
Let's review your buy-to-let options
Free adviser assessment • No credit search • FCA regulated
Struggled to get approved elsewhere? We specialise in complex cases including CCJs, self-employed income, and declined applications. Over 90% of our clients had concerns about their situation before speaking to us.
Related guides
Need a more specific landlord route?
If your situation is more specialised, these chapters go deeper.
Limited company buy-to-let
When tax efficiency matters more than a slightly cheaper personal rate.
Open guide →
Portfolio landlord mortgages
How lender rules change once you own multiple properties.
Open guide →
HMO mortgages
Higher yields often come with different lending rules.
Open guide →
Adverse credit buy-to-let
When credit issues sit alongside landlord lending.
Open guide →