You have found the house, agreed a price, applied for your mortgage, and then the lender’s valuation comes back lower than the price you agreed. Suddenly the numbers do not work, and it can feel as if the whole move is about to collapse.

It often is not. A down-valuation is one of the most common problems in a purchase, and one of the most fixable, as long as everyone understands what the valuation actually is and what it is not.

First, what a mortgage valuation actually is

When you apply for a mortgage, the lender instructs a valuer to confirm that the property is reasonable security for the loan. That is the whole purpose of the report.

  • It is written for the lender, not for you. You may pay for it, but you are usually not the valuer’s client, and you may never speak to them.
  • It is not a survey. It does not set out to check the condition of the house in detail. Some valuations are a short inspection; some are done largely from data without anyone visiting.
  • It is cautious by design. The valuer’s job is to protect the lender. If the evidence does not clearly support the agreed price, the safe answer for the lender is a lower figure.

That is why a valuation can read as alarming. It may be brief, use unfamiliar language, or flag things for “further investigation” without explaining how serious they are. Read without context, it can frighten a buyer into walking away from a perfectly good house.

Why down-valuations happen

The most common reasons are straightforward:

  • The agreed price is above recent comparable sales. Valuers lean heavily on what similar homes nearby have actually sold for. If competition pushed your price up, the evidence may not have caught up.
  • The market is moving. In a rising market, today’s prices can run ahead of last quarter’s sales. In a softening market, the valuer may reflect that sooner than the asking prices do.
  • The property is unusual. Distinctive homes with few true comparables are harder to value, and caution tends to win.
  • Condition or other concerns. Something the valuer saw, or could not rule out, may have reduced the figure.

What it means for you in practice

Your lender will base the loan on the lower of the price and the valuation. If you were borrowing a set percentage of the price, the amount the lender will lend may fall, and that leaves a gap between the money you have and the price you agreed.

For example, if you agreed £500,000 with a 10% deposit, and the house is valued at £475,000, a lender offering 90% of the value would lend £427,500 rather than £450,000. The gap to find is £22,500.

When the lender holds money back: retentions

Sometimes a down-valuation is not the whole story. Instead of, or as well as, lowering the figure, the lender may value the house but hold back part of the loan until certain works are done. This is called a retention, and the amount is the valuer’s estimate of what the repairs will cost: damp treatment, roof work, rewiring or structural repairs, for example.

A retention can be harder to deal with than a straightforward down-valuation:

  • You usually pay for the work first. The lender releases the money only after completion, once the work is done and re-inspected. Many buyers do not have that cash to spare, and they cannot get into the house to start before completion anyway.
  • The figure is an estimate, not a quote. It is a cautious guess made during a short inspection, and it can be well above what the work actually costs.

In Jon’s experience, retentions are often excessive, and the right specialist evidence can show the problem is smaller than the valuer assumed, or not there at all. Sometimes it confirms the valuer was right, which is just as valuable: you then know the real cost before you commit. Which specialists to involve, what to put to the lender, and how to use the result with the seller are where experience makes the difference between a retention that is reduced and a purchase that stalls until the mortgage offer runs out.

A retention on your mortgage does not have to stall the purchase. Jon has helped buyers turn excessive retentions into manageable ones.

Tell Jon about your situation

Your options

There is rarely just one answer. Broadly, buyers in this position can:

  • renegotiate the price with the seller
  • make up the difference themselves
  • meet the seller somewhere in the middle
  • ask for the valuation to be reconsidered
  • try a different lender
  • or withdraw

Each has costs, risks and timing consequences, and the right choice depends on things a list cannot weigh: how much flexibility you really have, the seller’s position and onward plans, the state of the chain, and whether the valuer has a point.

Not sure which route fits your situation? This is exactly the decision a consultation is for.

Tell Jon about your situation

Raising it with the seller

How the news reaches the seller matters as much as the number. Delivered as blame, it can end a sale both sides wanted. Delivered as a shared problem, with a clear and realistic proposal, it is usually resolved within days.

The right wording, timing and what you offer in return depend on the seller’s position as much as yours. Getting them wrong, often in a rushed phone call or through a nervous agent, is how good purchases are lost.

Where an independent view helps

Jon has helped many first-time buyers through exactly this moment: reading what the report actually says, separating routine comments from genuine concerns, and working out a sensible next step before anyone walks away. That is the purpose of a consultation: an experienced view from someone who is not part of the transaction and has nothing riding on whether it completes.