Let-to-Buy Mortgages East London 2026 | BEMS Ilford

Aug 31

10 min read

Across Ilford, Barking, Romford and the wider East London market, a growing number of homeowners are outgrowing their current property but don't want to sell it. Instead, they are keeping their existing home as a rental investment and using a let-to-buy arrangement to purchase the property they actually want to live in.

Let-to-buy is the mirror image of the more familiar buy-to-let. Rather than buying a new property to rent out, you convert the home you already live in into a rental property, and use the equity and rental income to support the purchase of your new main residence. In East London's competitive family housing market, where good three and four-bedroom houses in Ilford, Goodmayes and Chadwell Heath move quickly, let-to-buy allows homeowners to secure their next property without being trapped in a sale chain.

BEMS (Bains Express Mortgage Solutions) is based in Ilford IG1 and arranges let-to-buy finance for homeowners across East London who want to upsize, relocate, or hold on to a property with strong rental potential rather than selling it. This guide explains how let-to-buy mortgages work in East London in 2026.

Quick Answer

Let-to-buy involves two linked mortgage transactions: converting your existing mortgage to a buy-to-let mortgage (or obtaining consent to let from your current lender), and taking out a new residential mortgage on the property you are moving to. Lenders assess the rental income on your existing property against standard buy-to-let affordability rules, typically requiring rental cover of 125% to 145% of the mortgage payment at a stress-tested rate. The new residential mortgage is then assessed on your income in the normal way, sometimes with the existing mortgage disregarded if the rental income covers it. A 5% stamp duty surcharge applies to the new purchase because you will own two properties. BEMS in Ilford IG1 arranges both sides of a let-to-buy transaction together. Contact: +44 7849 673622.

What Is Let-to-Buy?

Let-to-buy describes a transaction where a homeowner retains their current property as a rental investment while purchasing a new property to live in. It is typically used by homeowners who:

Have found a new home but do not want to sell their existing property while the market is uncertain or while prices in their area are rising

Want to keep a well-located East London property as a long-term investment while moving somewhere more suitable for a growing family

Are relocating for work or personal reasons but expect to return to the area, or want to retain a foothold in East London's property market

Have an existing mortgage on a very favourable fixed rate that they do not want to lose by selling

The result is two mortgaged properties: your former home, now let out under a buy-to-let mortgage or consent to let, and your new home, financed with a standard residential mortgage.

How Let-to-Buy Works: Two Transactions, One Plan

Step 1: Converting Your Existing Property to a Rental

Before you can rent out your current home, you need permission from your existing mortgage lender. There are two routes:

Consent to Let is a temporary arrangement where your existing lender agrees to let you rent out the property while keeping your current residential mortgage in place, usually for a limited period such as 12 to 24 months. This is the simplest route where you plan to return to the property, but not all lenders offer it, and those that do may apply a rate loading or an administration fee.

Remortgage to Buy-to-Let involves refinancing your existing property onto a proper buy-to-let mortgage. This is the more common route for a permanent let-to-buy arrangement, as it is structured correctly for long-term letting and often releases some equity to help fund the deposit on your new home.

Step 2: A New Residential Mortgage on Your New Home

Once the letting arrangement on your existing property is confirmed, you apply for a standard residential mortgage on the property you are buying. Provided the rental income from your existing property is sufficient to cover its own mortgage payment, most lenders will disregard that mortgage when assessing affordability for your new residential loan, focusing instead on your income and the new mortgage payment.

BEMS structures both parts of the transaction together, coordinating timing between the buy-to-let remortgage or consent to let and the new residential purchase so that funds and paperwork line up for exchange and completion.

Which Lenders Offer Let-to-Buy Mortgages?

Let-to-buy is a named product for some mainstream lenders and a standard buy-to-let application for others, which is why matching the right lender to the case matters. The Mortgage Works, part of Nationwide, runs a dedicated let-to-buy range for the buy-to-let side of the transaction. Specialist buy-to-let lenders including Fleet Mortgages, Paragon, and Aldermore are also regularly used where the existing property needs a more flexible rental assessment, a limited company structure, or where the applicant's circumstances fall outside mainstream high-street criteria. BEMS is not tied to any single lender and compares options across the market for each client's specific let-to-buy case.

Let-to-Buy Finance Routes at a Glance

Route	Typical requirement	Best suited to
Consent to let (existing lender)	Time-limited, often 12–24 months; may carry a rate loading	Homeowners planning to return to the property, or testing the letting market short-term
Remortgage to buy-to-let	25% minimum equity typical; rental cover 125%–145% at stress-tested rate	A permanent let-to-buy strategy, or where extra equity is needed for the new deposit
New residential mortgage	Standard affordability on income; existing mortgage often disregarded if rent covers it	The property you are moving into

Why East London Homeowners Choose Let-to-Buy in 2026

Strong Rental Demand Across IG and RM Postcodes

Ilford, Barking, Romford and the surrounding East London postcodes continue to see strong tenant demand, driven by the area's transport links via the Elizabeth line, proximity to central London, and comparatively affordable rents relative to inner London boroughs. This makes a former family home in these areas a genuinely attractive rental asset rather than simply a fallback option.

Avoiding a Sale Chain in a Competitive Market

Good family houses in East London, particularly three and four-bedroom semi-detached and terraced properties, can move quickly. Let-to-buy allows a homeowner to make an offer on their next property without needing their own sale to complete first, which can be a decisive advantage in a competitive offer situation.

Keeping a Favourable Fixed Rate

Homeowners who secured a low fixed-rate mortgage in previous years are often reluctant to sell and lose that rate. Converting to a buy-to-let mortgage on the existing property, while taking a new rate on the property being purchased, allows some of that value to be preserved in the form of ongoing rental income.

Building a Long-Term Property Portfolio

For some homeowners, let-to-buy is the first step into buy-to-let investment. Retaining a well-located East London property as a first rental unit, funded by equity already built up in the property, is often a more accessible route into landlordism than purchasing an investment property from scratch.

Lender Criteria for Let-to-Buy Mortgages

Let-to-buy is underwritten as two separate applications, each assessed against its own criteria.

On the buy-to-let side, lenders typically require the projected rental income to cover 125% to 145% of the mortgage payment, calculated at a stress-tested interest rate that is often higher than the actual pay rate. Most buy-to-let lenders require a minimum deposit or equity of 25%, though some will lend up to 80% or 85% loan-to-value for experienced landlords with strong applications.

On the residential purchase side, the new mortgage is assessed on standard affordability criteria based on income and outgoings. Where the rental income on the property being let out sufficiently covers its mortgage, lenders generally do not count that mortgage as a liability against the new residential affordability assessment. Some lenders are more flexible on this point than others, which is why matching the right lender combination matters in a let-to-buy case.

Stamp Duty and Let-to-Buy: What You Need to Know

Because a let-to-buy purchase results in owning two properties, the purchase of your new home is treated as an additional property for Stamp Duty Land Tax purposes. In England, this means paying the standard SDLT rates plus a 5% surcharge on the full purchase price. On a £450,000 purchase in East London, for example, the surcharge alone adds a significant sum to the completion costs, so it needs to be factored into your budget from the outset.

If you go on to sell your previous main residence within three years of completing the new purchase, you may be entitled to a refund of the additional element of the surcharge relating to that property. However, this refund does not apply where you deliberately retain the former home as a rental property under a let-to-buy strategy, since the whole purpose of the arrangement is to keep both properties. Full guidance on the surcharge and the refund conditions is available from HMRC's Stamp Duty Land Tax guidance for additional properties. BEMS can talk through the stamp duty position on your specific transaction and how it affects your overall budgeting.

Case Study: A Let-to-Buy Move from Goodmayes to Chadwell Heath

A homeowner in Goodmayes with a three-bedroom terrace and 60% equity wanted to move to a larger four-bedroom house in Chadwell Heath but did not want to sell in a slow summer market. BEMS arranged a remortgage of the Goodmayes property onto a buy-to-let mortgage with a specialist lender, releasing a portion of equity towards the new deposit while the rental income comfortably covered the new mortgage payment at the lender's stress-tested rate. A new residential mortgage was then arranged for the Chadwell Heath purchase, with the Goodmayes mortgage disregarded from the affordability assessment once the rental cover was confirmed. Both transactions were coordinated to complete within a week of each other, allowing the client to move without a sale chain and to begin letting the Goodmayes property to a tenant sourced by a local agent shortly after.

Let-to-Buy vs Selling and Buying: Weighing the Options

Let-to-buy is not automatically the right answer for every East London homeowner looking to move. It works well where the existing property has strong rental appeal and sufficient equity, and where the homeowner is comfortable taking on landlord responsibilities including compliance with safety regulations, deposit protection, and the Renters' Rights reforms affecting the private rented sector. Where the existing property would make a poor rental investment, or where the homeowner would rather release all their equity into the new purchase, a straightforward sale and onward purchase may be more appropriate. BEMS reviews both options with clients before recommending a route.

East London Postcodes We Cover

BEMS arranges let-to-buy mortgages for homeowners across all East London postcodes, including:

IG1 to IG7 (Ilford, Gants Hill, Newbury Park, Barkingside, Hainault, Woodford)

IG11 (Barking)

RM postcodes (Romford, Chadwell Heath, Dagenham, Hornchurch)

E7, E11, E12, E15 (Forest Gate, Leytonstone, Manor Park, Stratford)

The Let-to-Buy Process: A Timeline

Week 1 to 2: initial consultation with BEMS to review your existing property's rental potential and your budget for the new purchase

Week 2 to 4: rental valuation obtained, application submitted for consent to let or buy-to-let remortgage on your existing property

Week 3 onwards: property search and offer on your new home can proceed in parallel once the letting arrangement is in principle agreed

Week 6 to 10: residential mortgage application submitted for the new purchase, coordinated to complete alongside or shortly after the buy-to-let remortgage

Completion: both transactions complete, ideally on the same day or in close sequence, with the previous home ready to be let and the new home ready to move into

Common Mistakes Made in Let-to-Buy Transactions

Not Checking Consent to Let Terms Early

Some homeowners assume their existing lender will automatically allow letting and are surprised to find consent is refused, delayed, or only granted with unfavourable conditions. Checking this at the very start of the process avoids problems later.

Underestimating the Stamp Duty Surcharge

The 5% additional property surcharge is often overlooked in early budgeting for a let-to-buy move. Building this into your affordability calculation from day one prevents unpleasant surprises close to completion.

Overestimating Achievable Rent

An unrealistic rental valuation can undermine the whole let-to-buy structure if the actual achievable rent does not meet the lender's cover ratio. An independent rental appraisal from a local East London letting agent provides a more reliable figure than an online estimate.

Pro Tips for East London Homeowners Considering Let-to-Buy

Get a proper rental valuation from a local Ilford, Barking or Romford letting agent before committing to a let-to-buy strategy, rather than relying on portal estimates

Speak to BEMS early so the buy-to-let remortgage and new residential mortgage can be planned together rather than as two disconnected applications

Factor landlord costs into your ongoing budget, including letting agent fees, gas safety certificates, EPC compliance, and landlord insurance

Contact BEMS for a free assessment of whether let-to-buy or a straightforward sale makes more sense for your situation

Frequently Asked Questions

Can I get a let-to-buy mortgage with bad credit?

It is more difficult but not impossible. Specialist lenders consider let-to-buy applications with credit issues, though rates and deposit requirements are typically less favourable. BEMS has access to specialist lenders who consider a wider range of credit profiles.

Do I need to remortgage my existing property for let-to-buy?

Not always. If your current lender offers consent to let and you are happy to keep that mortgage in place, a full remortgage is not essential. However, most homeowners pursuing a permanent let-to-buy strategy remortgage onto a proper buy-to-let product, which is designed for long-term letting and can release additional equity.

How much deposit do I need for the new property in a let-to-buy purchase?

This depends on the lender and your overall financial position, but typically 10% to 15% for the residential purchase, in addition to whatever equity or deposit is required to satisfy the buy-to-let lender on your existing property.

Will renting out my current home affect my ability to borrow for the new purchase?

If the rental income covers the mortgage on your existing property, most lenders disregard that mortgage when assessing your affordability for the new residential loan. BEMS matches clients to lenders who take the most favourable approach to this calculation.

Does BEMS help with let-to-buy mortgages across all East London postcodes?

Yes. BEMS arranges let-to-buy mortgages for homeowners across Ilford, Barking, Romford, Stratford, and all surrounding East London postcodes. Contact us for a free initial consultation. Available Monday to Friday 9am to 5pm and Saturday 9am to 2pm.

Conclusion: Let-to-Buy Gives East London Homeowners Options

Let-to-buy allows homeowners across Ilford, Barking, Romford and East London to move to the home they want without being forced to sell the one they already have. Structured correctly, it can protect a favourable existing rate, avoid a sale chain, and build the foundations of a rental portfolio, all while moving into a new main residence.

BEMS provides honest, specialist advice on let-to-buy mortgages from our Ilford office. We serve homeowners across Ilford, Barking, Romford, Stratford, Goodmayes, and all surrounding East London areas. Book your free let-to-buy consultation today. Call +44 7849 673622 or visit 31 Woodlands Road, Ilford, IG1 1JL.