7 Building Issues to Look Out for When buying a Christchurch Home

Buying a home in Christchurch can involve a few considerations that aren't always obvious during an open home. The age of the property, construction type, maintenance history, alterations and, in many cases, earthquake repairs can all influence what deserves a closer look.

No property is going to be perfect. The important thing is understanding the condition of the home, identifying issues that may require attention and knowing when further investigation is worthwhile.

Here are seven areas I consider particularly important when looking at residential property in Christchurch and Canterbury.

1. Moisture and signs of water entry

Moisture problems aren't always immediately obvious.

Things such as staining, damaged or swollen materials, deteriorated sealants, musty areas and changes around windows, showers or exterior walls can all warrant a closer look.

Non-invasive moisture testing can provide additional information in appropriate areas, but readings need to be considered alongside what can actually be seen and the way the property is constructed.

A higher reading doesn't automatically mean there is a leak. Equally, a freshly painted wall doesn't necessarily mean there isn't a problem behind it.

Where the observations don't add up, further investigation may be appropriate.

2. Foundations and floor levels

Christchurch properties can have a range of foundation types, and movement isn't necessarily unusual.

What matters is the extent of that movement, whether there are related signs elsewhere in the building and whether something appears to warrant further investigation.

Uneven floors, cracking, doors that don't operate properly or visible changes to foundations can sometimes indicate movement. Floor-level measurements can also provide useful additional information where appropriate.

Measurements should be considered as part of the overall picture rather than treated as a diagnosis on their own.

3. Previous earthquake repairs

For many Christchurch homes, previous earthquake damage and repairs are part of the property's history.

The fact that a house has been repaired isn't necessarily a problem. What matters is understanding what work was carried out and whether anything visible today raises questions.

An inspection may identify signs of previous repairs, remaining damage or areas where further information would be useful. However, a standard building inspection isn't a substitute for an engineering assessment or a detailed review of historic earthquake documentation.

If something raises concern, obtaining the relevant records or specialist advice before purchasing can be worthwhile.

4. Roofing, gutters and drainage

Water needs somewhere to go.

Roofing materials, flashings, gutters and downpipes all play a part in keeping water out of the building, while ground levels and site drainage help move it away from the house.

Things I look for include deterioration, damaged or poorly detailed areas, blocked or leaking gutters, questionable downpipe arrangements and ground conditions that may direct water towards the building.

A relatively small maintenance issue can become a much larger problem if it is left for long enough.

5. Exterior cladding and weathertightness

Christchurch has homes constructed across many different periods and using a wide range of cladding systems.

Each has its own maintenance requirements and areas that deserve attention.

The condition of cladding, junctions, penetrations, flashings, windows and doors can provide useful information about how well the exterior of the building is performing.

Cracking, deterioration or poorly completed alterations don't automatically mean there is a major weathertightness problem, but they may justify closer investigation.

6. Alterations and additions

Many older homes have changed considerably since they were originally built.

Walls may have been removed, bathrooms relocated, decks added, garages converted or extensions constructed. Some work will have required building consent or other approvals, while other work may not.

A visual building inspection can't confirm the complete consenting history of a property, but it can sometimes identify work that appears different from the original construction or raises questions about how it was completed.

If something doesn't look right, checking the available property records before becoming unconditional can be a sensible next step.

7. Roof spaces and subfloor areas

Some of the most useful information about a house can be found in areas buyers rarely see during an open home.

Where safely and reasonably accessible, roof spaces can reveal information about framing, insulation, ventilation, moisture staining and previous work.

Subfloor areas can provide information about foundations, ground moisture, ventilation, timber condition and other components hidden from view inside the house.

Access isn't always possible, and some properties have very limited roof or subfloor spaces. Where an area can't be inspected, that limitation should be clearly identified.

Looking at the whole property

One of the most important parts of assessing a house is not looking at individual observations in isolation.

A crack may be minor. A moisture reading may have an innocent explanation. An uneven floor may have been that way for many years.

But when several observations start pointing in the same direction, they can tell a different story.

That's where building experience becomes important — considering the property as a whole, understanding how it's different components relate to each other and recognising when something deserves further investigation.

If you're considering buying a property in Christchurch or Canterbury, BuiltClarity can help you better understand the condition of the home and identify the issues that matter before you commit.