The DIY Myth: Why Your Home Insurance May Not Be Valid!
This is a topic that catches many homeowners completely off guard. Most people assume their home insurance simply covers "the house", while in reality, insurers are often far more interested in how work was carried out, who carried it out, and whether the work complied with current regulations and manufacturer requirements.
The Hidden Risk of Taking Over Someone Else's Work
Many tradespeople are understandably cautious about completing another contractor's unfinished work, or rectifying DIY projects started by a homeowner. Let’s be clear from the start, that this is NOT because they “don't want the work".”
It's because the moment they touch it, they can inadvertently inherit responsibility for something they didn't build, install, or supervise, and it’s not as straight forward as you may believe.
Imagine
A homeowner has carried out some “minor” electrical repairs or partially wired an extension.
A builder has installed structural work but disappeared before completion.
A bathroom has been fitted by multiple trades over several years.
A DIY garage conversion has been completed without the correct approvals.
A new contractor arrives and completes the final stages.
Years later, a defect occurs.
The question often becomes:
Who is responsible?
The original installer may have vanished, retired, gone bankrupt, or simply be impossible to trace.
The last contractor involved can find themselves answering difficult questions from insurers, warranty providers, surveyors, solicitors, or loss adjusters.
Why Insurers Care
Insurance policies generally require homeowners to take reasonable care of their property and ensure works comply with relevant regulations. If a fire, flood, structural failure, or escape of water occurs, insurers may investigate:
Who completed the work?
Was it carried out by a competent person?
Were Building Regulations followed?
Were required certificates obtained?
Were manufacturer's instructions followed?
Were structural alterations approved?
If documentation cannot be provided, it can create complications during a claim.
That doesn't automatically mean a claim will be declined, but it can lead to lengthy investigations and disputes.
The DIY Myth
There is a common belief that:
"It's my house, I can do whatever I want." And to a point, that's true, however; certain works are controlled by legislation and regulations regardless of who owns the property.
Examples include:
Structural alterations
Electrical installations
Gas work
Certain drainage works
Some window and door installations
Extensions and conversions
Fire safety related works
Even Kitchen & Bathroom Installations
If these are not carried out correctly, the consequences may not become apparent until a future insurance claim, property sale, survey, or mortgage application.
Why Many Professional Contractors Start Again
Homeowners can sometimes be frustrated when a builder says:
"We need to remove that and start over."
It can feel wasteful. But from a professional perspective, it is often the safest option.
If a contractor cannot verify:
what's behind the walls,
how it was installed,
whether regulations were followed,
whether materials are suitable,
then certifying or guaranteeing the finished result becomes extremely difficult.
Sometimes the cheapest solution today becomes the most expensive solution later.
Protecting Yourself as a Homeowner
Please don’t assume that this mean’s we’re trying to dampen your spirits or “poo poo” your DIY attempts, we’re not. We just want all home owners to understand that there are risks that you may not have considered and there are a few simple steps can take to save significant problems further down the line:
✅ Keep all invoices and receipts.
✅ Retain Building Control approvals where applicable.
✅ Keep electrical, gas, and compliance certificates - no one should be undertaking any of these works in a DIY capacity whatsoever; only ever have a registered NICEIC electrical engineer or Gas Safe Registered Heating Eengineer complete these aspects!
✅ Photograph works as you progress.
✅ Use reputable, insured contractors when you do have someone come in.
✅ Ask whether insurance-backed guarantees are available.
✅ Inform your insurer before major renovation works commence and specifically request a breakdown of inclusions and exclusions where DIY works have been completed - and retain this information!
The Reality
Most genuine builders, electricians, plumbers, and other tradespeople are not being difficult when they decline to finish someone else's work. There’s a wonderful new legislation coming into effect called “The Golden Thread” which places an awful amount of responsibility on builders and contractors to ensure every detail of a project is efficiently documented and available to be accessed years later. This isn’t a bad thing.
It’s all about managing risk.
A professional reputation can take years to build and minutes to damage.
Sometimes walking away from an unknown situation is the most responsible decision a contractor can make.
For homeowners, the lesson is equally important:
The cheapest quote, the cash-in-hand job, or the weekend DIY shortcut can become remarkably expensive if an insurer, surveyor, solicitor, or future buyer starts asking questions years later.
When it comes to your home, documentation, compliance, and competent workmanship are every bit as valuable as the bricks, timber, and plaster that make up the building itself. And this is why we don’t take on every project that involved picking up where another builder or contractor left off.
It’s not about us being judgmental, or unsupportive; it’s about ensuring you as the home-owner, DIY’er or even a contractor, have all the information you need to mitigate risk to protect your home, investment & future.
