I am an electrical engineer, and that background is what makes me look at a refurbishment differently. Most people budget for what they can see: paint, kitchen, bathroom and flooring. The trouble is that the money goes, almost always, into what you cannot see.
The rule you should always apply
Before putting a figure on the refurbishment, answer this question: are the installations in this flat in proper order? If the answer is no, the refurbishment you have in mind is not the refurbishment you need.
A complete renewal of the electrical and plumbing installations can cost more than all the cosmetic work put together. And it is not optional: without installations that meet the rules, the property cannot be rented out with any confidence, nor sold without negotiating the price down.
The three levels of refurbishment
Light refurbishment: a tune-up
When the flat is functional and only needs updating. It tends to be limited to painting, replacing sanitary ware and taps, changing kitchen units, checking the electrical panel and deep-cleaning the floors. It is the most profitable option when the property has been well kept.
Medium refurbishment: updating with building work
The flat works but has become dated or has elements at the end of their useful life. It includes new flooring, a complete bathroom and kitchen, partial renewal of the installations and, often, windows. This is the most common scenario in second-hand housing over thirty years old.
Full refurbishment: building work including installations
Practically everything is redone, including layouts and installations, and structural surprises are frequent. This is where a budget runs away from you if there is no serious technical planning beforehand. At this level, a project and a municipal licence may also be required.
The invisible part: where the money goes
- Electrical installation. Consumer unit, cable cross-sections, number of circuits, sockets and residual current protection. In older homes it usually means opening up walls and ceilings to run new conduits.
- Plumbing and drainage. Materials (lead, iron, multilayer), pressure, condition of downpipes and drains. A problem with a downpipe affects the neighbours and can turn into work on the whole building.
- Damp. Localised leaks, rising damp on ground floors, condensation from lack of ventilation. Each has a different solution and a very different cost. Treating the wrong damp problem is throwing money away twice.
- Windows and external doors. Single-glazed windows, deteriorated frames or thermal bridges affect comfort, the energy bill and how the tenant perceives the property.
- Ventilation. Interior bathrooms and kitchens without proper extraction generate damp, odours and hygiene problems. It is the classic problem you discover in the second month of a tenancy.
Which refurbishments add value and which do not
The rule is simple: refurbishments that improve usability, efficiency and liveability add value. Those that answer the owner's personal taste add little.
| Usually adds value | Usually reduces returns |
|---|---|
| Installations up to standard | High-end finishes in a standard rental |
| Functional bathroom and kitchen | Highly personalised design refurbishments |
| Well-insulated windows | Smart-home features the tenant does not value |
| Good lighting and storage | Expensive furniture that wears out |
| Solving damp and ventilation | Replacing something that already works well |
A simple, clean, well-executed bathroom rents just as well as an expensive designer one, and costs a fraction. Tenants pay for things to work, not for marble.
How to read a building quote
A sound quote is broken down by items, with measured quantities and unit prices. When a single global figure arrives with three lines («masonry, installation, finishes»), there is hidden money in there.
Things I always check:
- What is not included. It is the key question. What does not appear in the quote will appear in the final invoice as an extra.
- Credible measurements. Square metres of flooring and paint, number of electrical points. If the figures do not add up against the size of the flat, something is wrong.
- Specified quality levels. «Top-quality sanitary ware» means nothing. You need a brand, a model or at least a range.
- Waste management and licences. Frequently omitted and always mandatory.
- Deadlines and penalties. Without a date and without consequences for delay, the work drags on.
- Payment terms. Payments against certified progress, never everything in advance.
Refurbishing from a distance without ruining yourself
This is where distance turns into lost money if it is not managed well. Four rules I always apply:
- Documented layout plan. Before starting, every item with its measured quantity. Without this, any change is negotiated from a position of weakness.
- Physical verification of progress. Someone with technical judgement checks on site before each payment. Photos from the contractor himself are not a verification.
- Payments against certification. Each payment corresponds to work carried out and verified, not to a calendar.
- A contingency reserve. 10-15% of the budget. In an old building that is not pessimism, it is planning.
The mistake that eats two years of returns
Buying without assessing the refurbishment and discovering the real cost after signing. It happens constantly: returns are calculated on the purchase price, the work is done and it turns out the project does not deliver the numbers that were imagined. Two years of rent can disappear entirely in that gap.
The solution is simple to state and requires judgement to carry out: assess the cost of the building work before making an offer, not afterwards. If you would like us to look at your case, you can book a call or see the service: refurbishment and technical assessment.