A bridging loan lets you purchase a new property before selling your existing one, using short-term secured finance backed by your current home’s equity.
Completion can happen within 24–48 hours in straightforward cases, though most transactions take 5–10 days or up to a few weeks depending on valuation, legal work, and lender processes. This structure suits time-sensitive purchases such as auctions or chain breaks.
In this guide, we’ll break down how it works, timelines, execution steps, costs, and risks.
TL;DR:
- A bridging loan is a short-term secured loan used to buy before you sell, typically repaid from sale proceeds.
- Completion can take 24–48 hours in simple cases, though 5–10 days is more common.
- Lenders usually cap total borrowing at 70–80% LTV across both properties.
- Success depends on strong equity, realistic pricing, and a clear, time-bound exit plan.
What is a bridging loan?
A bridging loan is a short term secured loan used to fund a property purchase before an existing property sells. It typically runs from a few months up to 12 to 24 months, using the borrower’s equity as security across one or both properties.
Before approving a loan, lenders look at the loan to value (LTV) ratio, the strength of the exit strategy, and the property valuation. Depending on how the loan is structured, the funds can cover either the deposit or the full purchase price.
Most borrowers repay using the proceeds from their property sale or by refinancing onto a standard mortgage. Specialist brokers such as KIS Finance can walk you through the full process of how bridging loans work, from structuring the deal and selecting the right lender to planning a clean repayment strategy.
How quickly can a bridging loan complete?
Bridging loans complete much faster than standard mortgages. Lenders focus on asset value, your exit strategy, and legal readiness rather than lengthy affordability assessments.
How fast your loan completes depends on the type of valuation required, how quickly the underwriter processes the case, and how efficiently your solicitor works.
Typical completion timelines look like this:
- 24 to 48 hours: achievable with pre-approved borrowers, no chain, and a desktop valuation
- 5 to 10 days: common with specialist lenders who use fast-track underwriting and dedicated legal teams
- 1 to 4 weeks: the standard range for cases requiring a full valuation and conveyancing
- 4+ weeks: usually the result of complex titles, planning complications, or slow legal work
Preparation makes a real difference. Borrowers who organise their documents early and work with an experienced broker tend to move through the process considerably faster. This applies across finance more broadly: CFD brokers for beginners, for example, are built around the same principle, reducing friction and making execution as simple and accessible as possible from the outset.
How to use a bridging loan to buy before you sell (step-by-step)
Using a bridging loan requires clear planning and a defined exit. You need to review your finances, select the correct structure, secure funding, and prepare for repayment. The process usually follows these 5 stages:
- Assess equity and peak debt
- Choose the right bridging structure
- Secure lender approval
- Market your existing property
- Complete and repay
1. Assess your equity and peak debt exposure
Start with accurate property valuations using recent comparable sales, and confirm your outstanding mortgage balance. From there, calculate your available equity and how much you need for the new purchase. Most lenders cap total borrowing at 70 to 80% LTV across both properties, so knowing where you stand is essential.
Make sure your figures include stamp duty, legal fees, lender fees, and monthly interest. It is also worth stress testing your numbers against a lower sale price or a delayed completion, so you understand what the overlap period could actually cost you.
2. Choose the right bridging structure
Whether you go open or closed bridging depends entirely on where you are in the process. Closed bridging works well if you have already exchanged contracts and have a fixed completion date. Because the exit is clearly defined, lenders price this more competitively. Open bridging applies when no buyer is in place yet, which typically means higher rates and more rigorous underwriting.
Before committing, confirm the loan term, how interest is charged (serviced or rolled up), what extension options are available, and whether any exit fees apply.
3. Secure lender approval and formal offer
Once you confirm your structure, approach a specialist lender or broker. Provide property details, mortgage statements, proof of income, and your exit plan. Lenders assess LTV, valuation reports, and sale strategy.
Make sure to agree on interest type: serviced monthly or rolled up and paid at exit. It’s advised to review arrangement fees, exit fees, and default interest clauses before signing. Solicitors then handle legal charge registration and funds release.
4. Market your existing property and prepare the exit
Lenders often want evidence that it is actively marketed at a realistic price, so use recent comparable sales to support your asking price. Monitor buyer interest and adjust your pricing if the market requires it. Keeping clear, consistent communication with your estate agent and solicitor reduces the risk of delays, and the faster you secure a buyer, the less interest you will pay overall.
5. Complete the purchase and repay the bridge
Once bridging funds are in place, complete the new property purchase. During the overlap period you will either service the monthly interest or allow it to roll up, depending on the structure you agreed. Keep a close eye on completion timelines, since delays directly increase your cost.
When your original property sale completes, use the proceeds to repay the bridging loan in full. If you need to, refinance the new property onto a standard mortgage at that point to restore long term financial stability.
Costs, risks, and when this strategy works (or fails)
Bridging finance carries higher costs than a standard residential mortgage. Lenders price risk into short loan terms and flexible underwriting. You must evaluate total exposure before committing.
Common costs and risks are:
- Monthly interest rates higher than traditional mortgages
- Arrangement fees, valuation fees, legal fees, and exit fees
- Dual payments during overlap with your existing mortgage
- Risk of delayed sale or lower sale price
- Extension fees if the loan term expires
This strategy works when you hold strong equity, price your property realistically, and maintain a clear exit plan. It fails when sale timelines slip or debt exceeds safe LTV limits.
Conclusion
A bridging loan lets you secure a new property before selling your existing one, and in many cases the process completes within days rather than months. That speed depends on several factors: the valuation method, how well the legal side is coordinated, the lender’s underwriting process, and how credible your exit plan is.
Clear equity, realistic pricing, and a controlled LTV ratio all work in your favour by reducing both risk and cost. Before you proceed, work through these final checkpoints:
- Confirm total peak debt and monthly interest exposure
- Validate expected sale price with comparable market data
- Agree on exit timeline within the loan term
- Understand all lender fees and extension terms
FAQs
1. How quickly can a bridging loan complete?
Completion can occur within 24–48 hours in straightforward cases with desktop valuation and ready legal work. Most transactions complete within 5–10 business days, while complex cases may take several weeks. Speed depends on valuation type, underwriting process, solicitor coordination, and clarity of the exit plan.
2. When should I use a bridging loan instead of a standard mortgage chain?
Borrowers use bridging finance when they need speed, such as auction purchases or broken property chains. It suits situations where timing flexibility outweighs higher short-term costs. Standard chain-linked completions remain cheaper but depend on synchronized sale and purchase transactions.
3. What are the main risks of buying before you sell?
The primary risk involves delayed sale or reduced sale price, which can strain repayment plans. Interest accrues monthly and increases total debt if the exit slows. Extension fees or refinancing under pressure can raise overall borrowing costs.
