Older homes can offer character, established neighbourhoods and features that are difficult to reproduce in newer properties. They can also contain plumbing that has been altered, extended and repaired many times over the life of the building.
If you are buying an older property in Plymouth, it is worth looking beyond whether the taps run and the toilet flushes. A plumbing system may appear perfectly usable during a viewing while still containing ageing pipework, poor water pressure, hidden leaks or equipment approaching the end of its useful life.
A few sensible checks before purchase can help you understand what you may be taking on.
Start with the visible plumbing
You do not need to dismantle anything during a viewing. Simply pay attention to what you can see.
Run taps and look beneath sinks for signs of:
- Active dripping
- Water staining
- Corrosion around joints
- Swollen or damaged cupboards
- Improvised-looking pipework
- Heavy deposits around fittings
- Persistent damp or musty smells
A recently cleaned cupboard beneath a sink is not automatically suspicious, but staining, warped boards or corrosion can indicate that leaks have occurred previously.
Check bathrooms in the same way, paying particular attention around toilets, baths and showers.
Check the water pressure
Turn on taps and showers where the viewing arrangements allow.
Weak flow from one outlet may simply indicate a local problem with that fitting. Poor flow throughout the house could have several causes, including restrictions in pipework, partially closed valves or problems with the incoming supply.
Also try running more than one outlet at the same time. A shower that performs well until somebody opens the kitchen tap may be worth investigating.
Do not assume that disappointing pressure is simply something you will have to accept because the property is old. Identifying the cause is more useful than guessing.
Find the internal stop tap
One small but important question is:
Where does the water turn off?
Ask the seller or agent where the main internal stop tap is located and, where practical, check that it can be operated.
The stop tap allows the water supply inside the property to be isolated if a pipe bursts or a serious leak develops.
In an older property it may be hidden behind kitchen units, beneath flooring or in another location that is not immediately obvious. Discovering that the valve is inaccessible or seized is much better before an emergency than during one.
Ask about the incoming water supply pipe
Older homes deserve particular attention when it comes to the material used for the water supply.
South West Water advises customers who suspect lead internal plumbing or an external lead supply pipe to contact the company; it can arrange water testing and advise on next steps. The company also states that property owners are responsible for maintaining their own supply pipe, including repairing leaks and replacing lead or damaged pipework.
That does not mean that every older Plymouth property has lead pipework. It simply makes the material of the incoming supply worth checking when buying an older home.
If you are uncertain, ask a suitable plumber or South West Water rather than trying to identify buried pipework from appearance alone.
Look for evidence of previous leaks
Hidden leaks are one of the more expensive plumbing problems because damage can continue before the cause becomes obvious.
During a viewing, look for:
- Brown or yellow marks on ceilings
- Freshly painted patches that differ from surrounding decoration
- Flaking paint
- Swollen skirting or flooring
- Damp areas beneath bathrooms
- Mould around pipe routes
- Water marks inside cupboards
- Staining around radiators or valves
None of these proves there is an active plumbing problem. A stain might relate to a historic leak that was repaired years ago.
The important thing is to ask.
If the seller says a leak occurred previously, useful follow-up questions include what caused it, when it was repaired and whether any associated damage was professionally rectified.
Examine the hot-water system
Find out how the property produces hot water.
Depending on the house, you might encounter a combination boiler, a separate hot-water cylinder, tanks or a system that has been modified over time.
Ask:
- How old is the boiler?
- When was it last serviced?
- Has it required significant repairs?
- Is there documentation for its installation?
- Is the hot-water cylinder showing corrosion or signs of leaking?
- Are there redundant tanks or pipes remaining from previous systems?
A working boiler on viewing day does not tell you its condition or likely remaining life.
If a gas boiler is installed, Gas Safe Register advises home buyers to have gas appliances safety-checked by a Gas Safe registered engineer. Gas work on appliances, flues and gas pipework must be carried out by appropriately registered engineers.
For a relatively recent boiler installation, it can also be worth checking whether the appropriate Building Regulations certificate is available.
Check the radiators and heating pipework
Radiators can offer clues about the wider condition of a heating system.
Look for corrosion, staining around valves and signs of previous leaks. If the heating is running, check whether radiators warm reasonably evenly.
Cold areas do not necessarily mean major work is required. A system may simply need maintenance, balancing or attention to individual components. But numerous ageing radiators, visibly poor pipework and an old boiler together could affect your plans and budget after moving in.
Ask whether the heating system has been maintained and whether major components have been replaced.
Do not forget the drains
Internal water supply is only half of a home’s plumbing story. Water also has to leave the property.
Slow-draining sinks, baths or showers deserve attention, particularly if several outlets are affected.
Outside, look for obvious signs such as overflowing gullies, unpleasant persistent smells or evidence of wastewater backing up.
Repeated drainage problems can sometimes be more complicated than simply clearing a blocked sink, so if something appears wrong during the purchase process it is sensible to investigate before completion.
Think about bathrooms that have been added later
Older houses frequently evolve as successive owners change how rooms are used.
A bathroom, downstairs WC or en-suite may have been added long after the property was originally built. That is not a problem in itself, but it is worth looking at the quality of the installation.
Pay attention to unusual pipe routes, awkward boxing-in, poor ventilation and signs that water has escaped around showers or baths.
Where you are considering substantial changes after purchase, remember that extra considerations may apply to historic properties.
Historic England advises that changes to services in historic buildings can require statutory consents, and altering or adding bathrooms in a listed building may require listed building consent where the work affects the building’s special interest.
That is particularly relevant in a city such as Plymouth where some homes sit within conservation areas or have protected historic status. It does not mean ordinary plumbing maintenance automatically needs planning permission; the issue arises when proposed alterations affect protected buildings or features.
Consider a plumbing inspection before you buy
A standard property viewing is never going to reveal every plumbing issue.
If you have concerns about an older property, particularly where you have seen evidence of leaks, ageing pipework, poor pressure or an old heating system, consider arranging a more detailed inspection before committing to major expenditure.
A plumber can concentrate on the water and heating installations while a building survey looks more broadly at the property.
For suspected gas-appliance issues, use a Gas Safe registered engineer rather than relying on a general visual plumbing inspection.
An inspection may find that everything is serviceable. Alternatively, it may identify work that you should factor into your purchase decision or future renovation budget.
Ask for paperwork rather than assumptions
Where significant plumbing or heating work has been completed, ask what records are available.
Depending on the work, that might include:
- Boiler installation documentation
- Service records
- Guarantees
- Receipts for major plumbing work
- Building Regulations certificates where applicable
- Information about previous leaks or insurance repairs
Lack of paperwork does not automatically mean work was carried out badly, particularly in a property that has changed hands several times. However, documentation can make it easier to understand when work was completed and what equipment was installed.
Older does not automatically mean problematic
It is easy to become unnecessarily alarmed when viewing an older home.
Age alone does not mean a property’s plumbing system needs replacing. Older properties can have well-maintained plumbing that has been sensibly upgraded over many years, while comparatively modern homes can still develop leaks and installation problems.
The aim is not to find a completely fault-free property. It is to understand what you are buying.
Check the visible pipework, water pressure, stop tap, hot-water and heating systems, drainage and signs of previous leaks. Ask about the material of the incoming water supply where appropriate and obtain professional advice when something is unclear.
A little investigation before buying an older Plymouth home can help separate routine maintenance from potentially significant plumbing work — and make those first months of ownership considerably more predictable.