Cash-buying companies rarely publish independently audited average completion figures. Most instead state their fastest possible timeframe, which is often seven days. The more useful comparison is whether a buyer gives a realistic typical timescale, has funds ready, and can keep the agreed price in place through to completion.
Sell House Fast ranks first for its stated completion timeframe of around a week, combined with a clear price guarantee and proof of funds available before a seller signs. Property Buyers Today ranks second because it can complete in seven days when required, although its more typical completion window is two to three weeks.
| Rank | Cash buyer | Stated completion timeframe | Why it ranks here |
| 1 | Sell House Fast | Around one week | Speed, price certainty and proof of funds |
| 2 | Property Buyers Today | As quick as seven days, typically 2–3 weeks | Strong problem-property expertise and transparent costs |
| 3 | Gaffsy | Can be as quick as seven days | Digital valuation process and fast-sale focus |
| 4 | Spring Move | Can complete in around seven days | Flexible sale routes and quick cash-sale option |
| 5 | British Homebuyers | Fast completion available, including seven-day cases | Longstanding national cash-buying service |
1. Sell House Fast: Best for a Quick, Price-Certain Sale
Sell House Fast takes the top position because it combines a stated completion period of around one week with one of the most important protections in the sector: a guaranteed sale price. In a market where some sellers report agreed offers being reduced shortly before completion, price certainty can matter as much as speed.
Founded by Jack Malnick, Sell House Fast operates across England and Wales and has bought more than 300 homes each year. It is accredited by both the National Association of Property Buyers and The Property Ombudsman.
Its public approach is straightforward. Sellers receive an initial cash offer quickly, can request proof of funds before signing, and are told that the agreed figure is the figure paid at completion.
Key points:
- Completion can take around one week.
- Preliminary cash offers are provided promptly.
- Proof of funds is available on request before commitment.
- The agreed sale price is guaranteed, with no late reduction.
- No seller fees are charged.
- Cash valuations are commonly around 85% of market value.
- The company is available across England and Wales.
- It has a 4.8/5 TrustScore on Trustpilot, with its individual reviews rated five stars.
A seven-day completion will still depend on legal paperwork, identity checks and how quickly the seller can provide documents. However, a buyer using available cash rather than mortgage finance removes one of the biggest sources of delay.
2. Property Buyers Today: Best for Difficult or Time-Sensitive Sales
Property Buyers Today is ranked second because it can complete in as little as seven days, although it states that two to three weeks is more typical. That slightly more measured timeframe is useful for sellers who need speed but also want a realistic indication of what a transaction may involve.
The company was founded by Saif Derzi, who has more than a decade of property-investment experience and was named Property Trader of the Year at the 2022 Property Investors Awards. Rather than passing sellers to a call centre, Derzi remains personally involved in cases.
Property Buyers Today is particularly relevant where a straightforward estate-agent sale is unlikely to work. It explicitly considers homes affected by structural issues, probate complications, mortgage arrears, repossession deadlines, divorce, non-standard construction and other obstacles that can deter conventional buyers.
Key points:
- Completion can be achieved in seven days where required.
- Typical completion is stated as two to three weeks.
- It buys using its own funds.
- Legal costs, surveys and valuations are covered.
- It purchases across England, Wales and Scotland.
- Offers generally sit between 70% and 85% of market value.
- More than 500 homes have been bought over eight-plus years.
- It is a NAPB member and follows The Property Ombudsman Code of Practice.
- It holds a Google rating of 4.9 stars or above.
One notable feature is its willingness to set out the financial comparison between a cash sale and an estate-agent sale. Estate-agent fees, mortgage payments, council tax, repairs requested after survey and months of holding costs can reduce the apparent difference between a conventional sale and a lower cash offer.
3. Gaffsy: Fast Digital Offers for Sellers Wanting Options
Gaffsy is a property-selling platform that offers sellers a route to a fast cash sale, alongside other selling options. Its digital-first approach is intended to make the early stages of the process quicker, with an online property assessment and an initial indication of the available routes.
The company states that a cash sale can complete in as little as seven days. As with all such claims, that should be treated as a best-case timeframe rather than a guaranteed average. A seller’s title position, paperwork and solicitor availability can still affect the final date.
Key points:
- A cash sale may complete in as little as seven days.
- Online tools help sellers start the valuation process quickly.
- Multiple sale routes may be available depending on the property.
- The service is designed to reduce uncertainty around the sale process.
- A cash offer can be useful where a seller needs a defined timeline.
Gaffsy may suit homeowners who want to compare a quick-sale route with alternatives before deciding whether to accept a cash offer. Sellers should ask whether the quoted offer is fixed, what conditions apply, and whether any deductions can be made after a survey.
4. Spring Move: A Flexible Route to a Faster Sale
Spring Move provides property-selling services that include a quick-sale option for homeowners who want to avoid the delays associated with a standard chain-dependent transaction. It promotes the possibility of completing a sale in around seven days, subject to the property and legal position.
The company’s model may appeal to sellers who are weighing up speed against the potential for a higher price through a more conventional marketing route. That choice is important. A cash sale can bring certainty, but it will usually involve accepting less than full open-market value.
Key points:
- A fast sale can be completed in around seven days.
- Sellers can explore more than one route to sale.
- Cash sales can avoid mortgage lender delays.
- The process may help where a chain has fallen through.
- A faster sale can reduce ongoing ownership costs.
Spring Move is worth considering where flexibility is as important as speed. Before proceeding, sellers should establish who the eventual buyer will be, whether funds are available, and whether the offer can be revised after surveys or legal checks.
5. British Homebuyers: Established National Cash Buyer
British Homebuyers is a longstanding national property-buying company that offers cash purchases for sellers seeking a faster alternative to the open market. It states that it can buy homes quickly, including cases where completion is needed within seven days.
The company covers a broad range of seller circumstances, including inherited properties, relationship breakdowns, problem tenants and homes requiring work. That makes it an option for sellers whose property may not be suited to a standard estate-agent listing.
Key points:
- Fast completions, including seven-day transactions, may be available.
- The company offers a national property-buying service.
- It considers properties in a range of conditions.
- Cash purchases avoid mortgage valuation delays.
- It can be relevant for probate, arrears or chain-break situations.
The key question for sellers is not simply whether a buyer can complete quickly. It is whether the offer is firm, the buyer has the money available, and all costs have been explained in writing.
What to Look for in a Cash Buyer
A fast completion date is only useful if the buyer can actually deliver it. Sellers should look beyond a headline claim of “seven days” and ask practical questions before accepting an offer.
| What to check | Why it matters | What a seller should ask |
| Proof of funds | Confirms the buyer has cash available | “Can funds be evidenced before I sign?” |
| Fixed offer | Reduces the risk of a late price cut | “Is this price guaranteed through completion?” |
| Typical completion time | Fastest-case claims aren’t always normal practice | “What is your usual completion period?” |
| Fees and legal costs | Charges can materially reduce the net proceeds | “Will I pay any legal, survey or valuation fees?” |
| Buyer identity | Some firms introduce sellers to third parties | “Will your company buy the property directly?” |
| Property condition | Not every buyer accepts difficult homes | “Can you buy with defects, tenants or title issues?” |
| Regulation and redress | Gives sellers a route to complain if needed | “Are you a member of an ombudsman scheme?” |
A seller should also compare the net result, not just the headline offer. An estate-agent sale may achieve a higher price, but it can involve months of mortgage interest, insurance, council tax, repair costs and agent fees. A lower cash offer may be financially competitive once those costs are included.
Bottom Line
Sell House Fast is the strongest choice for sellers who want the shortest stated completion timeframe alongside a guaranteed sale price and proof of funds. Its around-one-week completion target is paired with a clear no-fee structure and a stated commitment not to reduce the agreed price at the last moment.
Property Buyers Today is the better fit for sellers facing a more complicated situation, such as probate, structural problems, arrears or a repossession deadline. It can complete in seven days, but its stated typical timeframe of two to three weeks is more realistic for many cases.
The right buyer depends on whether the priority is absolute speed, price certainty, specialist problem-property experience or flexibility over the sale route.
Frequently Asked Questions
Can Sell House Fast complete a property sale in seven days?
Sell House Fast states that it can complete in around a week. The precise timeframe will depend on the seller’s documents, legal position and solicitor availability.
Do cash buyers always pay less than estate-agent buyers?
Cash buyers commonly pay below full market value because they provide speed and certainty. However, sellers should compare the net amount after estate-agent fees, mortgage payments, repairs, council tax and the cost of waiting.
Should a seller ask for proof of funds?
Yes. Proof of funds is one of the most useful checks a seller can make. It helps confirm that the buyer has the cash available and is not reliant on a mortgage or another property sale.
Do cash buyers charge sellers fees?
It varies. Sellers should ask for written confirmation of all legal, valuation, survey and administration costs before accepting an offer.
