London’s Proposed £500,000 First-Home Cap Could Exclude Buyers Who Meet the Income Rules

London first-time buyers could face a £500,000 property-price ceiling under the proposed Your First Home scheme, The Sunday Times reports. Housebuilders warn that the limit could restrict its usefulness in the capital—even as the reported household income threshold rises to £140,000.

The proposed London ceiling would be below the £600,000 limit under the former Help to Buy scheme. The newspaper also reports a £110,000 household income threshold outside London. These figures remain subject to confirmation.

The government announced the intended scheme in September, describing support for new-build purchases through participating developers, with a 2.5% buyer deposit and a 20% equity loan. Further details, including implementation, are due at the Budget.

For prospective purchasers, the tension is straightforward. A household may earn too little to buy its preferred home comfortably without assistance, yet find that the property itself costs too much to qualify for that assistance.

That does not mean all London buyers would be excluded. It does mean the eventual price limits, available homes and mortgage requirements will matter just as much as the headline deposit figure.

The Price Cap and the Income Cap Answer Different Questions

An income threshold determines which households may fall within a scheme’s intended audience. A property-price ceiling determines which purchases can qualify. Passing the first test does not override the second.

Consider a hypothetical couple with combined annual income of £125,000 who want to buy a £575,000 new-build apartment in London.

On the reported figures, their income would sit below the proposed London threshold. Their chosen home would nevertheless exceed the suggested property limit by £75,000.

They could not safely assume that a larger deposit would resolve this. Contributing more cash reduces the mortgage requirement, but the purchase price remains £575,000. A property cap is different from a maximum loan amount.

If those rules are confirmed, the couple would need to assess the purchase outside the scheme, choose a different property or reconsider their timing. The relevant question becomes what combination of deposit and affordable borrowing is actually available to them.

A Small Deposit Does Not Mean a Small Overall Debt

The attraction of an equity-loan arrangement is understandable. It can reduce both the buyer’s initial cash contribution and the amount needed from the mortgage lender.

However, the government contribution is still a loan. It should not be treated as money the buyer owns outright.

Using the announced structure as a planning assumption, a £500,000 purchase with a 2.5% deposit and a 20% equity loan would involve £12,500 of buyer cash, £100,000 of equity borrowing and a £387,500 mortgage.

The mortgage is smaller under the proposed structure, but total initial borrowing is higher than in either conventional example. That distinction matters when assessing future repayment, remortgaging and the proceeds available when selling.

An initial interest-free period can improve early cash flow without removing the eventual repayment obligation. The final documents will need to explain how the equity loan is repaid, how any later charges work and what happens if the property changes in value.

The old Help to Buy rules should not simply be carried across. GOV.UK confirms that Help to Buy: Equity Loan is closed to new applications in England. Its existing arrangements are historical context, not the terms of Your First Home.

For a £575,000 Purchase, the Deposit May Be the Real Obstacle

Returning to the couple earning £125,000, a conventional purchase at £575,000 would require £57,500 of deposit at 90% loan-to-value, leaving a £517,500 mortgage.

At 95% loan-to-value, the arithmetic would instead be £28,750 of deposit and £546,250 of mortgage borrowing. Whether either structure is available depends on the lender, the applicants and the property.

Those loan amounts are approximately 4.14 and 4.37 times their combined income. These ratios help describe the borrowing requirement; they do not establish affordability or approval.

A lender will consider accepted income, existing debts, household spending, dependants, the mortgage term and its own assessment rules. Bonuses, overtime or self-employed earnings may be treated differently from basic salary.

The couple could therefore have sufficient income for a mortgage but insufficient cash for the deposit and transaction costs. Alternatively, they might have the deposit but find the monthly commitment uncomfortable after service charges, travel and other expenses.

Identifying which constraint actually applies is more useful than assuming they need the largest possible loan.

A New-Build Flat Still Needs to Meet the Lender’s Rules

The availability of a high loan-to-value mortgage cannot be inferred from a lender’s headline residential limit alone. The property category and individual development also matter.

A lender may distinguish between newly built flats and houses, apply particular requirements to a development or need evidence concerning warranties and construction. The valuation must support the lending calculation.

Developer incentives also need to be disclosed and assessed. A contribution towards costs or an advertised discount should not be assumed to substitute for an acceptable deposit or make a purchase fit a scheme’s price limit.

For a leasehold flat, the solicitor and mortgage adviser should also establish the relevant lease provisions, service charges and any material building-related issues. A manageable mortgage payment can still sit within an expensive overall household budget.

Willow recently examined the relationship between lease terms and borrowing in our coverage of the leasehold reform debate. The same principle applies here: financial assistance does not remove the need to assess the property carefully.

Monthly Affordability Needs More Than an Income Multiple

A hypothetical £517,500 repayment mortgage over 30 years would cost approximately £2,778 a month at an assumed constant annual interest rate of 5%.

At 6%, the equivalent payment would be approximately £3,103 a month—around £325 more. These are illustrations, not current quotations, and exclude fees and other ownership expenses.

For the couple, the useful exercise is to place the payment alongside their actual take-home income and commitments. Gross household earnings do not describe what remains after tax, childcare, credit commitments and regular living costs.

Extending the term can reduce a monthly payment, but generally increases total interest if the rate and other assumptions remain unchanged. It may also move repayment further into the buyers’ working lives.

Equally, using every available pound for the deposit can leave too little for moving costs, furnishing and unexpected expenditure. The aim is a purchase that remains manageable after completion.

A Property Outside the Scheme Could Still Be the Better Fit

A support scheme can expand purchasing options without necessarily producing the most suitable outcome for every household.

A buyer might prefer an existing home closer to work, a property with lower ongoing charges or a home they expect to occupy for longer. Conversely, an eligible new-build could provide the location and accommodation they need with a more achievable initial deposit.

The comparison should therefore include the property itself, purchase costs, monthly commitments and future plans. A smaller deposit is valuable, but it is only one part of the decision.

If family assistance is being considered, establish whether it is a genuine gift or repayable borrowing. Those arrangements have different implications, and the lender and solicitor will need an accurate account of the source and terms of the contribution.

Nor should a buyer assume that extra borrowing elsewhere is an easy way to assemble the deposit. Additional credit can affect affordability and may be unacceptable under the chosen lender’s rules.

Waiting for the Budget Does Not Require Putting Every Decision on Hold

There is a sensible distinction between waiting for confirmed policy details and postponing all financial preparation.

Buyers can establish their current deposit, review existing credit commitments and obtain an assessment based on the property they want. That gives them a reference point against which to judge any new support.

An initial mortgage assessment is not a guarantee. Product availability, property valuation and the buyer’s circumstances can change. It is nevertheless more informative than building the entire purchase plan around an anticipated scheme.

New-build timing adds another consideration. Reservation, exchange and completion may be separated by months. A Budget announcement, registration process and the availability of mortgages under a new scheme are different milestones.

Before entering a binding commitment, buyers need their solicitor and adviser to establish how the funding aligns with the contract, including what happens if completion moves or the expected finance is unavailable.

The Test Will Be Whether the Scheme Connects Buyers With Suitable Homes

The proposed policy addresses a real difficulty: households can have reliable earnings while struggling to accumulate the cash needed for a purchase.

But reducing the deposit requirement does not settle the questions of property availability, lender acceptance or sustainable monthly costs. The eventual scheme needs to work across all of those stages for an individual buyer.

For London households considering homes around the reported boundary, the immediate value of a mortgage review is clarity. It can show whether conventional borrowing is realistic, how much cash would be required and where a different property budget may be necessary.

Once the final rules are published, Willow can compare them with that existing assessment. The objective is to help buyers choose a workable home and financing arrangement, whether or not government support forms part of it.