# Auction Bridging Finance in 28 Days Source: https://www.cashbookfinance.co.uk/insights/auction-bridging-finance Last updated: 2026-10-26 Author: Bjorn Laku, Director & Chief Marketing Officer (https://www.bjornlaku.com/) Publisher: Cashbook Finance Limited > How bridging finance is used to buy property at auction - the completion deadline, what to arrange before bidding, valuation, legal pack and exit. FCA-registered UK lender FRN 782472 ## Auction bridging finance: buying property at auction. At a traditional UK property auction, the fall of the hammer means exchange of contracts, a deposit is paid on the day, and completion usually follows within about 28 days. That is often too fast for a mortgage, so buyers use bridging finance. Written and reviewed by [Bjorn Laku](https://www.cashbookfinance.co.uk/bjorn-laku), Director & CMO. Business bridging only: Cashbook Finance does not offer regulated bridging loans secured on a home the borrower or a close family member lives in. LTV · Property → short-term capital Illustration Bridging structure check A £325,000 loan against a £500,000 property Within reference **65%** loan-to-value, against a 70% illustrative reference point - **Equity remaining** £175,000 - **Headroom to 70% LTV** £25,000 Estimated property value · £500,000 Requested gross loan · £325,000 Within a 70% illustrative LTV reference point. **Security risk:** Your property may be repossessed if you do not keep up repayments on a loan secured against it. Check eligibility · Costs and exit **£30m+** funded · **100+** UK businesses since 2019 · London SE1 - FCA **782472** - ICO **ZB545200** - Companies House **10723098** ### The three things to settle before you bid. The hammer exchanges contracts. Everything that matters to the lender has to be clear before that moment. The key is to prepare before you bid, because the deadline does not move. Lending view #### Get an initial view first Confirm the lender is comfortable with the property type, expected value and loan size before auction day. Legal pack #### Read the legal pack Title, leases, searches, special conditions and extra fees can change the deal, or the lender's appetite. Exit #### Test the exit A sale or refinance needs to work at realistic values and timings, not just in the best case. Check eligibility · About 2–3 minutes, no credit search. ### Know your numbers before the hammer falls. Share the lot, the legal pack and your exit plan, and we will give you a straight view on fit before you bid. ### About 28 days is not long for valuation, legals and funds. At a traditional auction, completion commonly follows exchange within about 28 days. The valuation, legal due diligence and the loan all have to complete inside that window. A valuation below the hammer price reduces the loan, and late title or lease problems can stall completion. Missing the date can cost the deposit and more. - Arrange the deposit and costs before auction day - Instruct a solicitor who can act quickly - Have a fallback if the valuation comes in low Which suits you ### Bid with a bridge, or not? | Your situation | Usually the better fit | Why | | --- | --- | --- | | You have a buy-to-let or sale exit within 12 months | Auction bridge | Fast enough for 28 days, repaid by the exit | | The legal pack shows title or lease problems | Do not bid yet | Problems found late can stop completion | | You can complete in cash and refinance later | Cash, then refinance | No bridging interest at all | | The lot needs major structural work | Refurbishment bridge or development finance | Works change the value and the risk | Worked example Check eligibility · About 2–3 minutes, no credit search. ### An auction purchase in 28 days. An investor buys a flat at auction for £250,000, pays a 10% deposit (£25,000) on the day and must complete within 28 days. The valuation confirms £250,000 and the bridge is repaid by a buy-to-let refinance in month 6. The investor needs £50,000 more of their own money at completion, plus stamp duty and costs; the bridge covers the rest. Check eligibility · Talk it through with a director | Property value | £250,000 | | --- | --- | | Gross loan (70% loan-to-value) | £175,000 | | Arrangement fee, 1%, from the loan | £1,750 | | Interest at 1% a month, rolled up, for 6 months | £10,500 | | Repaid at exit (loan plus interest) | £185,500 | | Cost before valuation and legal fees | £12,250 | | If the exit is 3 months late | +£5,250 in interest | Illustrative: interest at 1% a month, rolled up, and an [arrangement fee](https://www.cashbookfinance.co.uk/insights/bridging-finance-glossary#term-arrangement-fee) of 1% of the loan. Valuation and legal costs are extra and quoted per case. Bridging finance is secured against property, which may be repossessed if repayments are not maintained. ### Use these checks to decide whether to bid. If any of these is uncertain, the deadline turns a risk into a cost. #### Property A lendable property type, condition and tenure. #### Value A realistic value against the likely hammer price. #### Exit A credible sale or refinance route and timing. Illustrative guidance only; eligibility, pricing and terms are confirmed after review. Bridging finance is secured against property. Your property may be repossessed if you do not maintain repayments on a loan secured against it. **Related guidance:** [Bridging finance](https://www.cashbookfinance.co.uk/bridging-finance) · [Pricing & decisions](https://www.cashbookfinance.co.uk/pricing-decisions) · [Eligibility](https://www.cashbookfinance.co.uk/eligibility) · [Case studies](https://www.cashbookfinance.co.uk/case-studies) Quick answers ### Common questions. Check eligibility · All questions **Can I get bridging approved before the auction?** You can get an initial view on the property, the loan size and the exit before you bid. The formal offer follows the valuation and legal work, so start as early as the catalogue allows. **What if the valuation is below the hammer price?** The loan is sized on the valuation, so you fund the difference. Keep a cash buffer for that, because the completion date does not move. **Is 28 days always the deadline?** At traditional auctions completion usually follows within about 28 days, but the special conditions in the legal pack set the actual date. **Do you lend on homes bought at auction?** We provide business bridging on investment and commercial property. A home you or your family will live in falls under regulated lending, which we do not offer. Can’t see your question? Talk it through with a director #### Official sources - Stamp Duty Land Tax · GOV.UK - Search property information from HM Land Registry · GOV.UK Official guidance and legislation on the rules this page refers to. They explain the rules in general; take advice on your own position. Check eligibility · About 2–3 minutes, no credit search. ### A practical note from the lender. **Bjorn Laku: commercial judgement** Bridging delays usually come from unclear security, weak exit evidence or legal details that should have been surfaced before the deadline became urgent. ### More guides on bridging finance - [Bridging loans in London](https://www.cashbookfinance.co.uk/bridging-loans-london) - [Bridging finance LTV guide](https://www.cashbookfinance.co.uk/insights/bridging-finance-ltv-guide) - [VAT bridging loans](https://www.cashbookfinance.co.uk/insights/vat-bridging-loans) - [What slows down bridging completion](https://www.cashbookfinance.co.uk/insights/what-slows-down-bridging-completion) - [Bridging finance exit strategies](https://www.cashbookfinance.co.uk/insights/bridging-finance-exit-strategy-guide) - [Bridging finance valuations](https://www.cashbookfinance.co.uk/insights/bridging-finance-valuation-guide) --- Cashbook Finance. Cashbook Finance Limited is registered with the Financial Conduct Authority under Firm Reference Number 782472. Company number 10723098. Registered office: Cumberland House, 24–28 Baxter Avenue, Southend-on-Sea, Essex SS2 6HZ. Registered with the Information Commissioner’s Office under reference ZB545200. All finance is subject to eligibility, satisfactory due diligence, credit approval and agreed terms. Invoice finance, trade finance and bridging finance may not be suitable for every business. The availability, structure, amount, pricing, fees, security requirements and completion timescales of any facility will depend on the applicant’s circumstances, the quality of the supporting evidence provided and our assessment of the proposed transaction. Any figures, examples, rates or timescales shown on this website are for illustrative purposes only and do not constitute an offer, commitment or guarantee of finance. Terms and conditions apply. Bridging finance is secured against property. Your property may be repossessed if you do not maintain repayments on a loan secured against it. Applicants should obtain independent legal, financial and tax advice where appropriate.