Why the asking price is only a starting point
The seller decides what to ask, usually with advice from an estate agent. That figure may reflect comparable evidence, a marketing strategy, the seller's expectations or a desire to test demand. It tells you what the seller hopes to achieve; it does not prove that a lender, surveyor or future buyer would agree.
A reduction from the asking price is not automatically a bargain. If a home is listed above the evidence, an offer five per cent lower could still be expensive. Start with what similar buyers actually paid, not with a standard percentage discount.
Check the property's previous sale
A previous recorded sale gives you a useful property-specific anchor. Note when it sold and how the local market has moved since then. A price from many years ago cannot simply be compared pound for pound with today, but it can still show the scale of the proposed increase.
Ask what has changed since that sale. A genuine extension, major refurbishment or material deterioration may make a simple market adjustment misleading. Recorded transactions can also have unusual circumstances, so treat one historic figure as evidence rather than a complete answer.
Choose genuinely comparable sold properties
The best comparisons are recent, nearby and similar. A sale on the same street is not necessarily comparable if it is a different property type, much larger, leasehold rather than freehold, or in substantially different condition.
- Property type: compare houses with similar houses and flats with similar flats.
- Size: use floor area where reliable information is available, not bedroom count alone.
- Location: consider position on the street, parking, outlook and proximity to noise or transport.
- Timing: prefer recent completed sales, then consider market movement between the sale date and today.
- Tenure and condition: account for lease length, service charges and obvious differences in repair or renovation.
Use price per square metre carefully
Dividing price by floor area can help compare homes of different sizes, especially within the same building or tightly defined local area. It is not a valuation formula. Small properties often command a different rate per square metre from large ones, while gardens, parking, layout, tenure and condition can materially change the price.
Use it to spot questions. If the asking price per square metre is well above several close comparisons, ask what justifies the difference. The answer may be a better plot or refurbishment—but it should be something more substantial than the listing description.
Allow for market movement without overreading it
Local or regional house-price movement can help bring an older sale into current context. Broad indices do not capture the exact condition or desirability of one home, and averages can hide differences between property types and neighbourhoods. They work best as one part of the evidence alongside recent comparable transactions.
SashMark's existing valuation system uses available property evidence where the match and confidence are sufficient. When supported, the report can show an estimated value range and compare an entered asking price with it. If the evidence is too weak for a defensible estimate, SashMark leaves the valuation hidden rather than inventing a figure.
What the data cannot tell you
Recorded data cannot fully judge renovation quality, interior finish, structural condition, the seller's circumstances or how much another buyer may be willing to pay. It may not know that a kitchen looks new but was poorly installed, or that an apparently similar home has a much better garden.
Use the evidence to decide whether the asking price deserves closer scrutiny, then combine it with the viewing, survey and your own priorities. If you are ready to compare possible figures, use the free house offer calculator. For the wider decision, follow the guide to checking a property before buying.