Spend £20,000 on a tired property and you haven't automatically created £20,000 of value.
You might create considerably more. You might create less. Or you might simply spend £20,000, delay the sale and take on a project you never really wanted.
Jamie Hardcastle of Renovate for Sale works with owners facing exactly that decision, often where a property has been inherited and the people making the choice have no particular desire to become property developers.
His starting point is fairly unforgiving:
“The single biggest mistake is spending on a renovation without first checking that the finished value, once you take off all the costs and the holding costs, actually leaves a real gain over selling as-is today, and doing the work anyway because ‘it'll obviously be worth more done up.’”
That's really the question.
Not:
Would this property be worth more renovated?
But:
Would renovation change the selling outcome enough to justify the cost, time and risk of getting it there?
That sounds obvious. There are a few layers to it.
Where small changes can do the most
Jamie is pretty specific about where some of the simplest gains can be found:
“The clearest wins are cosmetic. A tired kitchen or bathroom, dated décor, worn carpets, scruffy paintwork, a poor first impression at the front door.”
None of those things necessarily makes a property fundamentally worse.
But buyers see visible work and start pricing in more than the materials. They imagine builders, disruption, delays, unknown costs and whatever else might be waiting once somebody starts pulling things apart.
That's why relatively modest work can sometimes have an outsized effect.
As Jamie puts it:
“These things are cheap relative to how much they put buyers off, so fixing them moves a property from ‘a project’ to ‘move-in ready’ and widens the pool of people who'll consider it.”
The aim isn't to create the nicest house in Britain. You just need to close a visible gap between what the property is today and what buyers in that local market expect.
Sometimes removing a handful of obvious objections is enough to change how the whole property is perceived.
When condition changes who can buy
The bigger opportunity appears when condition isn't just putting buyers off.
It's stopping some of them buying at all.
Jamie says:
“Mainstream lenders can refuse or down-value a property that has no working kitchen or bathroom, active damp, structural movement or a safety defect, which effectively shuts out ordinary mortgage buyers and leaves only cash purchasers.”
At that point, you're talking about access to the market.
And Jamie's description of what renovation can actually achieve here is probably one of the most useful points in the whole article:
“The real job renovation does isn't just prettier photos. It changes who's allowed to bid and how they think about price.”
Cash buyers, developers and investors aren't necessarily frightened by a tired property. They're used to pricing one.
They'll allow for the works, the unknowns and usually a margin for taking that risk on themselves.
Ordinary residential buyers tend to behave differently. Many need a mortgage and don't want to become project managers the day they collect the keys.
Getting a property back to a basic habitable and mortgageable standard can therefore change the buyer pool dramatically.
And that doesn't necessarily mean a full refurbishment.
“You don't necessarily need a full high-end renovation to get there. Often it's simply the difference between ‘a lender won't touch it’ and ‘a lender will,’ and that line can be crossed with fairly modest, targeted work.”
A cosmetic refresh can make more people want the property.
Targeted remedial work can sometimes make more people able to buy it.
That's a much more interesting kind of uplift.
Local estate agents will usually be able to help you understand the difference in valuation between a mortgageable and unmortgageable property in the local area.
Selling as-is can still be the right call
None of this means the seller should automatically do the work.
Jamie is equally clear on the other side:
“A lot of people don't realise that ‘as-is’ doesn't mean ‘unsellable.’ There's an active, competitive market of buyers who specifically want unmodernised property.”
Sometimes the opportunity belongs with the next owner.
If the area already attracts renovators, landlords, developers or cash buyers, the seller may decide to let those buyers price the work and take the risk themselves.
That can make particular sense when the job is becoming structural rather than cosmetic, or when speed and certainty matter more than chasing the maximum possible headline price.
Jamie sees that a lot with inherited homes.
There may be several beneficiaries, nobody lives nearby, nobody particularly wants to manage builders and the property is costing money while everybody decides what to do.
Selling as-is doesn't necessarily mean leaving money on the table.
You're also transferring the refurbishment cost, the overruns, the delay and the risk that the finished value doesn't arrive as expected.
The question is what that transfer is worth.
The street sets the ceiling
Jamie's next warning is where the fantasy maths tends to fall apart:
“The finished value has to sit comfortably below the top price the street can command, so there's real headroom rather than over-spending.”
A £30,000 renovation doesn't automatically create £30,000 of extra value.
The local market gets a vote.
If the best finished properties nearby are already selling around a particular level, throwing more money at yours doesn't force buyers to create a new ceiling.
That's why Jamie wants evidence before the work begins:
“There should be actual evidence, in the form of comparable finished sales nearby, that buyers in that specific area really do pay the premium for move-in-ready.”
Renovating for sale is different from renovating for yourself.
Your taste has value to you.
The market isn't obliged to reimburse you for it.
And if the numbers only work because you're assuming the finished property will achieve a heroic price, Jamie has a fairly good description for what you've got:
“The uplift is a hope rather than a plan.”
Time can eat the uplift
The builder's quote is only the obvious number.
Jamie says sellers routinely underestimate what happens while the work is being done:
“People also underestimate the ordinary friction of getting it done. Finding contractors, waiting on materials, and the plain fact that a refurb delays the day you can even go to market.”
Meanwhile the property keeps costing money.
Council tax. Insurance. Utilities. Security. Mortgage or estate carrying costs.
Then the unknowns start appearing.
Damp behind plaster. Wiring that needs more work than expected. Plumbing problems. Roof repairs. Contractors moving dates.
And the outside world doesn't stop while any of this is happening.
Jamie points out that there's market risk in the gap too:
“Prices, interest rates or demand can move while you're mid-project, and a finished property that lands at the wrong moment can just sit there.”
So the uplift doesn't only need to beat the work.
It needs to beat the whole journey.
Bridging can sometimes fund the gap
There's an interesting middle ground when everybody can see the potential, but the property in its current condition doesn't quite connect to the normal mortgage market.
A seller may decide to fund enough work to make the property mortgageable, widen the buyer pool and then sell into that larger market.
Or they may leave the opportunity to somebody else.
An investor or experienced buyer might use bridging finance to acquire the property in its current condition, carry out the works and then sell or refinance onto longer-term finance once the property is suitable.
Jamie's own caution around funding is important here. He says selling as-is can make more sense where sellers don't have the cash to do the work upfront or would need to borrow simply to make the renovation happen.
That doesn't mean finance can't work.
It means it has to earn its place in the calculation.
Whether it's the buyer or seller using short-term finance, somebody is carrying the property from:
what it is today
to
what the wider market may be prepared to value and finance tomorrow.
Bridging can help cross that gap.
It doesn't make the gap profitable.
Interest, fees, holding costs and delays all have to be absorbed by the value being created, while the eventual sale or refinance still needs to work as an exit.
Propillo's bridging loan calculator can help test what that finance may cost and what happens if the project takes longer than expected.
The same principle Jamie applies to the renovation applies to the bridge:
If the numbers only work when everything goes perfectly, there probably isn't enough room in them.
Inherited property turns one decision into several
The maths gets harder when several people are involved.
Jamie says families frequently underestimate this part:
“Once there are several beneficiaries, deciding to renovate multiplies the coordination. Approvals, funding, arguments over spend, and suddenly a simple sale has become a project nobody really owns.”
One person wants the highest possible price.
Another wants the property sold.
Someone's happy to spend money.
Someone else thinks the family should stop messing around and take the offer.
And somebody still has to find the contractors and answer the phone when something goes wrong.
There's also an emotional distortion that can creep into inherited property.
Jamie says families can overvalue improvements a loved one made while undervaluing how a stranger will actually see the house.
They can also assume that because money has been spent on the property, a buyer will automatically value those choices in the same way.
They won't necessarily.
Sometimes the new kitchen adds value.
Sometimes the buyer would rather have chosen their own.
The best answer may be less work, not more
Jamie's answers point towards a useful middle ground.
The decision isn't always:
Renovate or don't renovate.
It's often:
What actually needs fixing?
One property may need a modest cosmetic refresh to stop buyers heavily discounting it.
Another may need targeted remedial work to cross the line into something ordinary mortgage buyers can realistically purchase.
Another may need major structural work, months of management and an optimistic assumption about what it'll be worth afterwards.
Those are completely different propositions.
And that takes us back to Jamie's original point.
Don't start with the refurbishment.
Start with what is actually suppressing the outcome today.
Then ask whether removing it leaves enough benefit after the cost, time and risk required to get there.
Jamie sums that up better than we could:
“The right call is whichever one nets more money and less stress for the actual property, the actual market and the seller's actual capacity, not whichever one feels like it should be worth more.”
A tired or inherited property can absolutely be worth improving before sale.
It can also be worth leaving alone.
The right question isn't whether it'll look better afterwards.
It's whether doing the work genuinely improves the outcome.
This article is part of the Property Industry Insights collection, where Propillo looks at the people, tools and ideas changing how property decisions get made.
With thanks to our contributor
This article includes insight from Jamie Hardcastle of Renovate for Sale on how sellers can judge whether improving a tired or inherited property is genuinely likely to improve the final outcome.
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