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Modern Method of Auction Mortgages
Modern Method of Auction (MMoA), also known as a conditional auction, lets you buy a property through online bidding with a fixed deadline. You can often use a standard mortgage for Modern Method of Auction, but you need to be mortgage-ready before you bid because there is usually a reservation fee due quickly and a tight timetable, often 28 days to exchange and 28 days to complete (or a similar 56-day structure). The key is checking the property is mortgageable early by reviewing the legal pack, lease terms, construction type, and any title issues that could delay or derail a mortgage offer. With access to 130+ UK lenders and 25,000+ products, and advisers trusted by 2,500+ 5-star reviews, you get a clear, fast funding plan so you can bid with confidence.
Find out quickly if the property you want to buy is mortgageable and get a funding plan in place for the deadline.
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How do Modern Method of Auction purchases work?
Modern Method of Auction (MMoA), sometimes called a conditional auction, is a popular way to buy and sell UK property online. It’s used for residential homes, buy-to-let and some commercial units, and it is designed to give you more time than a traditional auction to sort the legal work and arrange finance.
The Modern Method of Auction (MMoA) is a conditional, online auction designed for ordinary buyers who need a mortgage, not just cash investors. Win the bid, pay a non-refundable reservation fee and you then typically have around 56 days to exchange and complete (commonly 28 days to exchange + 28 days to complete). According to HomeOwners Alliance the reservation fee gives exclusivity but “it’s not legally binding” and the buyer has 28 days to exchange and a further 28 days to complete.
Its that timeline that enables a mortgage possible for an auction purchase. However, you must get it right.
Key points at a glance:
- Timeline: About 56 days from the auction end to completion (28 to exchange + 28 to complete). Faster than a private treaty sale, slower (on purpose) than a traditional auction
- Costs: Buyers usually pay a reservation fee (between 2 to 5% or a minimum set by the auction platform) on top of the purchase price. You also need to cover normal purchase costs (deposit at exchange, conveyancing, valuation, SDLT).
- Stamp Duty Land Tax: HMRC can treat certain compulsory buyer fees as chargeable, which can increase the SDLT base. Always ask your solicitor to confirm how your specific fee is treated, but your mortgage adviser will help.
- Who it suits: First-time buyers, movers and landlords who want speed, transparency and a clear timetable, and of course who can move quickly on a mortgage.
- What to watch: The reservation fee is non-refundable if you pull out , so you must get your Mortgage in Principle (MIP), solicitor and documents ready before bidding.
One key rule for modern method of auction mortgages, is get your mortgage in principle first!
1) Listing and marketing 2) Viewings and due diligence 3) Bidding period 4) You win the auction: reservation fee and exclusivity 5) Exchange of contracts and completion Traditional auction: contracts are exchanged immediately when the hammer falls. You are legally committed on the day once the bidding process is complete. MMoA: you usually pay a reservation fee to secure the exclusivity, then you aim to exchange within a set period of time. You typically become legally committed at exchange, not at the moment you win the bid.Step-by-step: what happens from listing to completion with a modern property auction
The seller lists the property with an agent and auction platform. Online auctions can attract more eyes because they are heavily marketed across portals and email databases.
Whilst you can bid without viewing, you should view the property and review the legal pack early. If you are need a mortgage, you also need to sanity-check whether the property is “mortgageable” (lease length, construction type, title issues, etc.). It’s important to highlight any mortgageability red flags, and we cover this further down.
Bidding happens electronically over a set period and specified within the online auction. The seller sets a reserve price (the minimum they will accept). Some platforms allow for an extended bidding period to the timer if bids are placed near the end and there is increased activity.
If you are the highest bidder and the reserve is met, you secure the property subject to the auction terms. You will usually be required to pay a non-refundable reservation fee quickly to lock in an exclusive period to exchange and complete.
Important: this is not the same as a deposit paid to the seller but rather, it is typically a fee paid to the auction provider/agent for the auction service. We can cover all costs clearly with you.
You still complete the purchase in the normal legal way with solicitors, searches (where relevant), lender valuation, mortgage offer, exchange, then completion all being critical steps. With MMoA, the deadlines are tight, so our team will get you prepared from the outset and you need your solicitor moving fast from day one.Modern Method of Auction vs traditional auction (the key difference)
Mortgage Experts for Modern Method of Auction
Modern Method of Auction is becoming more popular, offering flexibility and better timescales for both buyers and sellers. With much more succinct costs, property reservation methods and simplicity of process, this area of the property market is going more and more online. If buying through an online auction, you are committed and therefore must ensure you are fully knowledgeable on how these mortgages operate, so that you can follow through with the commitment to purchase.
- Clear concise guidance
- Access best rates in the market
- Get mortgage ready for auction
- Completions within 56 days
Traditional Auctions
Traditional Auctions still take place and require mortgage expertise. You can buy at an auction with the right mortgage, but there are plenty of things that must be considered. Speak with The Mortgage Broker today to understand your options.
10%
Modern Method of Auction is growing. iamproperty’s Online Auction Index reported sales up 11% year-on-year in Q1 2025 and up 15% year-on-year in Q2 2025.28,975
UK auction volumes hit record levels in 2025, with 28,975 lots sold and £5.9bn raisedYour 56-Day Modern Method of Auction plan
Modern Method of Auction (MMoA) is often structured around a tight timetable, commonly 28 days to exchange and a further 28 days to complete as discussed. That’s why having a clear plan matters and here is a practical “day-by-day” approach that helps you stay on track for an MMoA mortgage and avoid last minute surprises.
Day 0–3: Win the bid, lock the basics in
- Pay the reservation fee as required by the listing terms.
- Instruct your solicitor immediately and ask them to review the legal pack as a priority.
- Send the full listing and legal pack to your broker so the property can be checked for “mortgageability” red flags (lease length, construction type, title restrictions, occupancy/tenancy, cladding where relevant).
- Get your documents ready for the lender: ID, address, bank statements, payslips/accounts, deposit evidence.
Day 3–10: Submit the mortgage application fast
- Have you lender choice finalised based on timescales, property type, and your income profile (employed, self-employed, contractor, limited company).
- Submit the full mortgage application with a clean document pack to avoid underwriting delays.
- Book the lender valuation early and plan for access if the property is tenanted or has restricted viewing slots.
- If the property is likely to be a tough mortgage fit, agree a backup route early (for example, a short-term solution while issues are resolved).
Day 10–28: Remove the blockers and aim for exchange
- Underwriting will focus on affordability, documents, and property suitability. Respond quickly to queries and conditions.
- Your solicitor will raise enquiries from the legal pack. These often include lease documents, management packs, rights of way, planning/building regs, and title restrictions.
- If the valuation comes back low or flags issues, decide quickly: renegotiate (if possible), adjust deposit, switch lender, or move to a backup plan.
- Target exchange of contracts by day 28 wherever the auction terms follow the 28+28 structure.
Day 28–56: Completion, lender conditions, and moving money
- Confirm your completion date and ensure all lender conditions are satisfied (insurance, final documents, gifted deposit letters, source of funds).
- Arrange buildings insurance from exchange where required.
- Transfer deposit and completion funds in good time and keep contingency for fees.
- Complete the purchase within the agreed window, commonly by day 56.
Why this matters for a Modern Method of Auction mortgage
The biggest risk with the MMoA actually isn’t whether you can get a mortgage. it is really about getting it all done in the timeframes, being prepared and acting fast enough. A broker who understands property auction deadlines, legal pack risks, and lender criteria can save you time, stress, and avoidable cost.
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What is a Modern Method of Auction
What is it?
Buying at auction can secure a property quickly, often at a sharper price, but you must complete fast. The Modern Method of Auction (MMoA) is designed to be mortgage friendly, giving you typically around 56 days to exchange and complete (often 28 + 28) and be aware, you pay a non-refundable reservation fee and commit to proceed within the deadline.
Timelines:
What is 28 + 28? You should expect 56 days for an end to end completion as your timeframe. This is commonly made up of 28 days to exchange + 28 days to complete.
Who it’s for
First time buyers, investors and limited company landlords, as well as chain-free movers using MMoA who need fast, reliable finance to hit 28–56 day timelines.
What you do
We use a specialist mortgage broker who understands the modern method of auction mortgage process. We will compare mortgages, bridging and short-term options across our 130+ lenders, making sure we meet MMoA timelines and the mortgage lenders requirements. You get clear next steps, realistic timescales and a backup plan if needed.
Key facts to know before you bid
Reservation fee: Usually non-refundable and on top of the purchase price (it normally doesn’t count towards your deposit).
56 Days to be Mortgage Ready: As mentioned above, it usually take just 56 days to complete.
Costs & SDLT: Some buyer-paid fees may be chargeable for SDLT — ask your solicitor to confirm for your lot.
Funding mix: If a standard mortgage won’t complete in time, bridging or short-term finance can secure the deadline, then you refinance.
Traditional Auction: Unconditional at the hammer; exchange immediately; usually 28 day completion.
MMoA: Conditional; pay reservation fee; mortgage-friendly timetable; typically ~56 days to exchange/complete.
What you need ready
We can assess your options with just your income and deposit. However, you want to be mortgage ready, and therefore we will require, Photo ID, proof of address, payslips and bank statements, deposit evidence, credit file, solicitor instructed and clarity on all auction fees and conditions. If you’re not MIP ready, don’t bid yet. Get your MIP first.
Next step
Book a free appointment, get auction-ready with your MIP, or request a quick call back.
UK mortgage risk warning
Your home may be repossessed if you do not keep up repayments on your mortgage. Fees and SDLT treatments vary by case; always confirm with your solicitor. MMoA reservation fees are usually non-refundable.
How to get a mortgage on an auction property - 3 simple steps
1. Tell us your goals and get auction mortgage ready
Send the lot link & deadline, with some basic info
2. We will run a soft search and get your a Mortgage in Principle
Choose the right funding options across 130+ lenders
3. Review pack, legals and timelines and bid with confidence
We manage lender, solicitor and auctioneer to exchange
Auction Deadline Met: Mortgage Porting Saves £4,092
Initial Enquiry
Clients were interested in a new home sold via Modern Method of Auction. They were apprehensive as they needed to sell their current house first. We also had to determine if arranging a mortgage with a new lender or porting their existing fixed-rate mortgage was better than paying the early repayment charges (ERCs).
(Porting – is taking your existing mortgage to a new property, the same balance is taken across as are all the existing mortgage terms, this avoids paying ERCs)
| Commitment Type | Property Value | Balance | Loan to Value | Term | Payment Type | Interest Rate | Product Type | Payment |
| Mortgage | £180,500 | £162,450 | 90.00% | 32 Years | Repayment | 3.79% & 5.55% | Fixed | £757.00 |
The Challenge
The tight 56-day auction deadline was the primary challenge. Securing a new mortgage and selling their home in that timeframe was a concern, there was also a risk of losing their reservation fee if the sale fell through.
The Solution
Porting their mortgage was the most financially viable option. We helped the clients understand the Modern Method of Auction process, which allowed them to negotiate with the auction house. They secured a deadline extension from 56 to 72 days and a clause to refund their reservation fee if funding failed. We work closely with all parties to ensure a quick mortgage offer was received and completion set.
The Result
Porting the mortgage saved the clients £4,092 in early repayment charges. They carried over the fixed rate mortgage balance which was split over a rate of 3.79% and 5.55%. The ending date of these products aligned with their renovation plans, we will then look at a new mortgage for them. The mortgage was offered quickly, and the move was completed successfully.
How did this help?
The process provided the clients with peace of mind. We transformed a tricky situation into a smooth success. They saved money on ERCs and gained the confidence to negotiate for the home they wanted. They were able to move knowing everything was handled.
Advisor: Harrison AndrewsBrilliant service... good digital support meaning a faster, slicker service. Stress free and great, easy to understand advice given
Mortgage Turned Down Elsewhere? See How These Buyers Got Approved
Initial Enquiry
First-time buyer clients approached us with a complex situation. They had been successful at a property auction and were under a strict deadline to complete the purchase. To make things even more challenging, another mortgage company had turn them down, and they were concerned about a previous credit blip and proving income.
We do recommend you speak to a mortgage adviser before going to auction, to ensure finance can be arranged, as the timescales can be very demanding.
| Commitment Type | Property Value | Balance | Loan to Value | Term | Payment Type | Interest Rate | Product Type | Payment |
| New Mortgage | £320,000 | £288,000 | 90.00% | 35 years | Repayment | 4.84% | 5 year fixed | £1,421.00 |
The Challenge
The clients were in a difficult spot. They had already paid a significant deposit on the auction property and stood to lose it if they couldn’t secure a mortgage in time. With the clock ticking and their last application having failed, they were feeling immense pressure. Their financial profile was also a bit unusual, with one client being a CIS contractor and the other working in an employed role, which can sometimes complicate things for traditional lenders. They also had the minor credit issue. We had to find a solution fast that could handle the tight deadline, the auction purchase, and their unique circumstances.
The Solution
We immediately got to work, prioritising speed and efficiency. We identified a lender who could process their application quickly and was comfortable with both the auction timescale, the credit issue and the clients’ income type. We collected all the necessary documents and submitted the application on the same day. Our team then maintained communication with the lender, the solicitor, and the clients to ensure everything progressed smoothly and to prevent any delays.
The Result
Thanks to our rapid action and close management, we received the mortgage offer quickly. We then worked closely with all parties involved to push the purchase through to completion. The clients were able to secure the property and successfully complete the purchase well within the deadline.
How Did This Help?
This outcome was a huge relief for the clients. By acting swiftly and understanding their unique needs, we were able to secure a mortgage for them and save them from losing their deposit and their dream home. They were able to get on the property ladder and explained in their Trustpilot review that they were extremely grateful for the support and expertise that made the seemingly impossible, possible.
Advisor: Harrison AndrewsFast funding plan for property auction purchase
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Benefits of Modern Method of Auction
- Complete Faster
- Quick and Easy Bidding
- Buy with a Mortgage
- Additional Security
- Transparency
Completing within 56 days, you can control purchasing timelines. Bidding from the comfort of your own home you can speak with The Mortgage Broker and get a decision in principle to ensure you are mortgage ready to bid on the right property.
With the binding reservation agreement, both the buyer and the seller have additional security throughout and there is complete transparency of the whole process.
What makes a property “mortgageable”?
For a lender, a mortgageable property is one they can value confidently and if required, resell easily after a repossession. That means the home needs to fit a broadly habitable condition, structurally sound and legally straightforward. It’s important to get mortgage ready before hand to help with speed and meeting deadlines, but also before you bid, we can help you sense check the common deal breakers.
- short leases (many lenders get cautious when the remaining term drops below typical thresholds)
- non-standard construction (some concrete, timber frame, thatched or high-rise blocks can limit lender choice)
- title or legal issues (missing rights of way, restrictive covenants, unclear boundaries, absent planning or building regs for major works).
Also we are mindful of tenancies and occupancy (especially if it’s sold with tenants in situ), cladding or fire-safety concerns on flats, and anything likely to trigger a down-valuation. If any of these appear in the legal pack or survey, you may still have options, but you need to know before you bid because MMoA timelines don’t give you room for surprises.
Yes, absolutely you can and there are many lenders that are up to speed with the modern property auction methods. A Modern Method of Auction Mortgage is often used specifically because it gives mortgage buyers more time than a traditional auction and it’s a very structured approach that allows for speed and clarity from the outset. If you want to bid with confidence, you need to be mortgage-ready before you bid, not after. Get your Mortgage in Principle in place first and be confident in your mortgage position. It shows you are serious, and it reduces the risk of missing deadlines when you win. With Modern Method of Auction, the urgent payment is usually the reservation fee (often due straight away when winning a bid). Your deposit for the property is normally paid at exchange of contracts (often 10% of the purchase price, depending on the contract and lender requirements). Do not confuse the reservation fee with the deposit. You must budget for the reservation fee on top of the purchase price and we will ensure you have transparent foresight over all costs from the outset. We will be sure to check the listing for any additional buyer charges (some listings include admin fees or seller legal costs). Many MMoA listings work to a structure like 28 days to exchange and 28 days to complete, or a 56-day overall timescale from issue/receipt of draft contract documentation. Either way, the margin for delays is slim. Legal pack and property risks Auction properties can come with complications. Before you bid, you should understand: Some auction-related fees can affect Stamp Duty calculations depending on how they’re structured. Your solicitor can confirm what applies to your purchase. Get in touch today to speak with our property auction mortgage specialists. No mortgage offer = no fee. You only pay a transparent broker fee once a formal mortgage offer is secured. Book a free appointmentCan you get a mortgage to buy a property through Modern Method of Auction?
Your mortgage-ready property auction checklist before bidding
How you give yourself the best chance of success with winning a modern method of auction?
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Why Use The Mortgage Broker for Property Auction Mortgages
The Mortgage Broker has an award winning team of experienced, knowledgeable advisers and when it comes to the new modern method of auction, this is crucial. You need to have clarity, guidance, swift confident action and absolute peace of mind that you are mortgage ready and can bid on the right property.
- MMoA Mortage Specialists
- Access to Lender Exclusives
- 130+ Lenders & 25,000+ Rates
- Same Day Affordability
- Soft Search Mortgage in Principle
- Full End to End Support
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Recommend for first time buyers. We had previously been rejected by an unhelpful company and we were recommended the mortgage Broker and we are so happy with them. They have a much more personal relationship with the company's they use, so we were approved straight away. Made this experience so easy for us as first time buyers. Harrison has been so helpful always answering our questions and calls. Making the process as easy and as straightforward as possible and we are so grateful for that.
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Speak to our auction specialistNon-refundable Reservation Fee
You usually pay the non-reservation fee straight away. Your deposit is normally due at exchange. This is paid in addition to any asking price (price can be negotiated as usual prior to commitment of course) and therefore, needs to be considered in any affordability tests when confirming the amount you wish to pay for the property.
Reservation Agreements are contained within a buyers pack and here are a couple of example’s to help you understand the sort of expectations that are contained within it.
Example Clause
4.7. The Seller agrees that the Reservation Fee paid under Clause 1.1 of this Modern Method of Auction Reservation Agreement is to be repaid to the Buyer, within 5 working days after the Termination Date, if the Buyer has been unable to exchange within the Reservation Period for any of the following reasons:
4.7.1. The purchaser does not have sufficient funds to proceed with the purchase of the Property as a direct result of a related remortgage or sale of another property in England or Wales failing to proceed.
The importance in being prepared for auction is paramount and The Mortgage Broker will ensure you are set up to complete successfully. The above extract illustrates the requirement to have an agreement in principle ahead of any bidding process.
Property Websites
When searching for properties across popular websites such as Rightmove or Zoopla, you will start to see an increasing number of properties that are being sold by auction. You will find common wording across these sites. Here is an example of what you may see:
This property is offered through Modern Method of Auction. Should you view, offer or bid your data will be shared with the Auctioneer [name of company]. This auction method requires all parties to complete the transaction within 56 days, enabling buyers to proceed with mortgage finance (subject to lending criteria, affordability and survey). The buyer is required to sign a reservation agreement and make payment of a non-refundable Reservation Fee of [X%] of the purchase price including VAT, subject to a minimum of [£XXX]. This fee is paid in addition to the purchase price and will be considered as part of the chargeable consideration for the property in the calculation for stamp duty liability.
This property offers a Buyer Information Pack containing documents around the property. These documents may not tell you all you need to know about this property, and therefore, we encourage you to complete your own due diligence before bidding. You will find enclosed in this pack a sample Reservation Agreement and T&C’s and the buyer will be expected to make a payment of [£X] towards this pack preparation.
FAQ’s for Modern Method of Auction
Yes. A Decision in Principle (DIP) proves your budget, speeds up the underwriting process, and lets you move straight to a valuation after you win. It’s crucial to have this ready before bidding.
No, the reservation fee does not reduce the mortgage deposit or purchase price. It is considered a transaction cost.
Traditional auctions are unconditional at the hammer fall and complete in 28 days. MMoA is conditional: you pay a reservation fee and get around 56 days to arrange a mortgage and complete legal formalities.
The reservation fee is generally between 2% and 5% of the purchase price, paid by the buyer, and is non-refundable if you pull out. It’s essential to check each listing’s terms and conditions.
The Modern Method of Auction (MMoA) is a conditional online auction. Winning the bid requires paying a reservation fee for exclusivity, then typically you have 56 days to finalize the purchase, making it mortgage-friendly compared to traditional auctions.
Yes. Some auction platforms charge for a Buyer Information Pack, and there may be other fees listed in the auction description. Read all fee schedules carefully.
A standard mortgage typically suffices with the 56-day window provided. Bridging finance might be needed if the property isn’t immediately mortgageable or if there’s a risk of missing deadlines.
Yes, but be prepared to pay the reservation fee and any platform charges up front, over and above your 10% deposit. A mortgage in principle is essential beforehand.
If you withdraw before exchange, you forfeit the reservation fee and any sunk costs. After exchange, failing to complete risks losing the contract deposit.
Possibly. Fees that are a condition of purchase can increase the basis for Stamp Duty Land Tax (SDLT). Confirm with a solicitor how this fee is treated.
Generally, yes. However, lenders might decline due to short leases or poor property conditions. It’s advisable to seek professional advice before bidding.
Yes, if the Decision in Principle, solicitor, searches, and valuation are all pre-arranged, it can be fast-tracked to 28-42 days.
Yes, usually faster with a fixed timetable and often chain-free, reducing the risk of the sale falling through compared to private sales.
You can still withdraw pre-exchange, but will likely forfeit the reservation fee. Hence, a pre-bid review of the legal pack is highly advised.
It’s crucial to review the legal pack, get a mortgage in principle, and understand costs like SDLT before bidding. Any uncertainties should be clarified with your mortgage advisor.