Bridging Loans for Unmortgageable Properties Explained

Bridging loans for unmortgageable properties are designed to help buyers purchase properties that standard mortgage lenders are unwilling to finance.

Some properties are considered “unmortgageable” because they are unsuitable security for a traditional residential mortgage at the time of purchase. Bridging finance can provide a short-term solution while the property is repaired, renovated, or made suitable for a standard mortgage later.

These loans are commonly used by property investors, developers, landlords, and residential buyers looking to secure properties quickly or purchase homes needing substantial work.

What Is an Unmortgageable Property?

An unmortgageable property is a property that does not currently meet a lender’s criteria for a standard mortgage.

This usually means the property is considered too risky due to its condition, construction type, or legal status.

Common examples include:

• Properties without a working kitchen or bathroom
• Homes with severe structural issues
• Properties affected by subsidence
• Fire or flood-damaged buildings
• Properties with no heating system
• Homes considered uninhabitable
• Short lease properties
• Properties with significant legal complications
• Buildings of non-standard construction

Traditional mortgage lenders usually require a property to be immediately habitable before approving finance.

How Do Bridging Loans Work for Unmortgageable Properties?

A bridging loan provides short-term secured finance that allows a buyer to purchase the property quickly.

The borrower then typically:

• Renovates or repairs the property
• Resolves legal or structural issues
• Improves the property to mortgageable condition
• Repays the bridging loan through sale or refinancing

Once the property becomes suitable for mainstream lending, borrowers often refinance onto a standard residential or buy-to-let mortgage.

Why Would Someone Use a Bridging Loan Instead of a Mortgage?

Bridging finance is commonly used because standard mortgage lenders may decline applications for properties requiring major work.

Bridging loans can offer:

• Faster completions
• More flexible property criteria
• Short-term funding during renovations
• Finance for auction purchases
• Solutions for unusual or complex properties

They are often used when speed is important or when buyers want to secure opportunities before arranging long-term finance.

What Types of Properties Can Bridging Lenders Accept?

Bridging lenders are usually more flexible than mainstream banks.

Depending on the lender, they may consider:

• Derelict houses
• Auction properties
• Properties without kitchens or bathrooms
• Mixed-use buildings
• Barn conversions
• Commercial-to-residential conversions
• Flats above shops
• Properties with short leases
• Homes with structural movement

Acceptance depends on the lender’s appetite for risk and the proposed exit strategy.

Can You Get a Bridging Loan for Auction Properties?

Yes, bridging finance is widely used for auction purchases.

Auction buyers often need to complete within 28 days, which can be difficult with a standard mortgage application.

Bridging loans can provide quick access to funds, allowing buyers to complete on time while carrying out renovations or arranging longer-term finance later.

You can learn more about time-sensitive property finance in our guide on bridging loans before selling your current property.

What Deposit Do You Need for a Bridging Loan?

Most bridging lenders require a deposit or existing equity.

Typical loan-to-value limits range from 65% to 80%, depending on:

• The property condition
• The type of work required
• Your experience level
• Your exit strategy
• Your credit history

The more complex the property, the lower the maximum loan-to-value may be.

What Is an Exit Strategy?

An exit strategy is how you plan to repay the bridging loan.

For unmortgageable properties, common exit strategies include:

• Refinancing onto a standard mortgage after renovations
• Selling the property for profit
• Using proceeds from another property sale

Lenders place significant importance on the exit strategy because bridging loans are intended as temporary borrowing.

Can You Renovate a Property Using Bridging Finance?

Yes, many borrowers use bridging loans to fund renovation projects.

Some lenders offer:

• Light refurbishment finance
• Heavy refurbishment finance
• Stage release funding
• Development exit finance

The type of finance available depends on the scale of work involved.

Light refurbishment may include cosmetic upgrades, while heavy refurbishment could involve structural changes, extensions, or full property conversions.

Do Bridging Lenders Check Credit History?

Yes, although many bridging lenders are more flexible than mainstream mortgage lenders.

Some lenders may still consider applicants with:

• Defaults
• CCJs
• Missed payments
• Historic debt problems
• Previous bankruptcy

Strong equity and a clear repayment plan can sometimes outweigh adverse credit concerns.

You can learn more about specialist lending criteria in our guide on mortgages after bankruptcy discharge.

How Quickly Can a Bridging Loan Be Arranged?

Bridging finance is often much faster than a standard mortgage.

Some lenders can complete within days, although timescales vary depending on:

• The complexity of the case
• Valuation requirements
• Legal work
• The property type

This speed can be particularly useful for auction deadlines or chain-break situations.

How Much Does Bridging Finance Cost?

Bridging loans are generally more expensive than traditional mortgages because they are short-term and higher risk.

Costs may include:

• Monthly interest
• Arrangement fees
• Valuation fees
• Legal fees
• Broker fees
• Exit fees

Interest may be paid monthly or added to the loan balance through rolled-up interest.

Can First-Time Buyers Get Bridging Loans?

Some bridging lenders will consider first-time buyers, although options may be more limited.

Lenders may assess:

• Your deposit size
• Your income
• Your experience with property
• The complexity of the project
• Your repayment plan

More complex renovation projects may be harder for inexperienced borrowers to finance.

What Are the Risks of Bridging Loans?

Bridging finance can be useful, but it also carries risks.

Potential risks include:

• Higher borrowing costs
• Delays during renovations
• Difficulty refinancing later
• Unexpected repair costs
• Property market changes

If the property cannot be refinanced or sold as planned, borrowers may face additional costs or repayment pressure.

Because bridging loans are secured against property, failure to repay could ultimately put the property at risk.

Can You Refinance an Unmortgageable Property Later?

Yes, refinancing is one of the most common exit routes.

Once repairs or improvements are complete, borrowers often apply for:

• Residential mortgages
• Buy-to-let mortgages
• Commercial mortgages
• Portfolio landlord finance

The property will normally need to meet standard mortgage lender requirements before refinancing is approved.

What Do Bridging Lenders Look At?

Bridging lenders usually focus on:

• The property value
• The condition of the property
• Your available deposit or equity
• Your exit strategy
• Your experience level
• Your financial background

They may also review bank statements and evidence of income.

We explain this further in our guide on what mortgage lenders look for on bank statements.

Are Bridging Loans Suitable for Buy-to-Let Investors?

Yes, bridging loans are commonly used by buy-to-let investors purchasing properties needing refurbishment.

Many investors use bridging finance to:

• Buy below-market-value properties
• Renovate before refinancing
• Increase rental value
• Improve energy efficiency
• Convert properties into HMOs or flats

Once work is complete, the property may qualify for a buy-to-let mortgage based on its improved value and rental income potential.

Final Thoughts

Bridging loans for unmortgageable properties can provide short-term funding for buyers looking to purchase properties that standard mortgage lenders will not currently accept.

They are commonly used for:

• Renovation projects
• Auction purchases
• Structural repairs
• Complex or unusual properties
• Short-term property investment opportunities

Before applying, it is important to understand the costs, risks, and repayment strategy involved.

Professional advice can help clarify whether bridging finance is suitable for your circumstances and long-term plans.

This guide provides general information only. Personalised mortgage advice should always come from a regulated mortgage adviser.