7 Things To Check When Buying An Old Property

At a Glance

Buying an old property requires careful inspection beyond its aesthetic appeal. Key checks include structural stability, dampness and timber decay, and the condition of the roof and chimney. You must explore outdated wiring and plumbing, the presence of hazardous materials such as asbestos or lead, window efficiency and insulation, and external drainage and boundaries. Identifying these issues early helps prevent costly repairs and ensures the property remains safe and structurally sound.

The Right Precautions and Checks

Buying an old property is often a labour of love. Whether it’s a Victorian terrace house with original fireplaces or a rustic farmhouse with exposed beams, older homes possess a character and soul that modern builds frequently lack. However, beneath that historic charm can lie a myriad of hidden issues that could turn a dream home into a financial burden.

Before you sign on the dotted line, it is essential to look beyond the aesthetics. For example, if the driveway is crumbling or the pathways are uneven, it often indicates a lack of general maintenance. For those looking to restore a heritage home to its former glory, consulting specialists like LSL Surfacing can provide insight into professional driveway restoration, ensuring the approach to your home is as sturdy and attractive as the structure itself.

But it doesn’t stop at driveways. To help you navigate the complexities of purchasing a vintage gem, here are 7 critical checks to make when buying an old property.

1. Structural Integrity and Movement

Older buildings have had decades, if not centuries, to settle. While some minor settlement is normal, significant structural movement can be a red flag. When touring the property, look for large diagonal cracks in the plaster, particularly above doors and windows.

Check if the floors feel level; a slight slope might be "character", but a pronounced dip could suggest joist failure or subsidence. Outside, look for bowing walls or "staircase" cracking in the brickwork. An RICS Level 3 Building Survey is non-negotiable for older properties, as it provides a deep dive into the building's structural health.

2. Damp and Timber Decay

Damp is the arch-nemesis of the old house. Historically, houses were built to "breathe" using lime mortar and permeable materials. Modern "improvements", such as cement pointing or non-breathable paints, often trap moisture inside the walls.

Before buying a property, look for musty smells, tide marks on the walls, peeling wallpaper or signs of mould. Don’t forget to check the woodwork for signs of rot. If the wood feels soft or spongy, you might be dealing with wet or dry rot, the latter of which can spread like wildfire through a building’s structure.

3. The Condition of the Roof and Chimneys

A leaking roof can cause thousands of pounds of damage before you even realise there’s a problem. Check for slipped, cracked, or missing tiles, and look at the "valleys" (where two roof sections meet) for debris or moss buildup, which can cause water to back up.

Chimneys are another common weak point. Check the "flashing", the metal strip that seals the gap between the chimney and the roof. If it’s loose or corroded, water will find its way into the attic. Also, check the chimney stacks for leaning or crumbling mortar, as these can be hazardous and expensive to repoint.

4. Electrical Wiring and Plumbing

Standards for wiring and plumbing have changed drastically over the years. Many old properties still have "daisy-chained" sockets or outdated fuse boxes that aren't equipped to handle modern appliances. Look for old-fashioned round switches or braided cables, which indicate a rewire is long overdue.

Similarly, check the plumbing. Turn on the taps to test the water pressure and look under sinks for signs of slow leaks. If the property has been empty for a while, the pipes may be prone to airlocks or corrosion. If the heating system is an ancient back-boiler, factor in the cost of a modern, energy-efficient replacement.

5. Hazardous Materials (Asbestos and Lead)

In many homes built or renovated between the 1930s and the 1980s, asbestos was a common building material. It can be found in floor tiles, ceiling "Artex", insulation, and even flue pipes. Asbestos can be a major health hazard, leading to respiratory ailments.

Lead is another concern. Older homes may still have lead water pipes or layers of lead-based paint under more recent coats. Testing for these materials early in the process is vital for your safety and your renovation budget.

6. Windows and Insulation

Traditional sash windows are beautiful, but they are notorious for being drafty and difficult to maintain. Check if they have been painted shut or if the sash cords are broken. If the property is in a Conservation Area, you may be legally required to repair them rather than replace them with modern uPVC, which can be costly.

Additionally, old houses rarely meet modern energy efficiency standards. Check for any loft insulation and ask about the wall construction. Solid stone or brick walls (common in pre-1920s homes) cannot be easily filled with cavity wall insulation, so you may need to consider internal or external wall insulation to keep heating bills manageable.

7. Boundaries, Drainage, and External Surfaces

Finally, don't forget the exterior. Check the condition of the boundary walls and fences, as these can be expensive to replace and often lead to neighbourly disputes.

Perhaps most importantly, look at the drainage. Does the ground slope away from the house, or does water pool against the foundations? The state of the driveway and paths is a key indicator of how well the external environment manages water. 

A well-maintained surface is essential to prevent damp from seeping into the lower levels of the house. Ensuring your external hardscaping is handled by professionals is an investment in the property's long-term health.

Final Thoughts

Buying an old property is an adventure that requires a blend of romanticism and cold, hard pragmatism. While the "soul" of an old house is priceless, the cost of repairing decades of neglect is very real. By checking these seven key areas and hiring the right specialists, you can ensure that your historic home remains a sanctuary for many years to come, rather than a cautionary tale.