If you're considering renovating a property in Cardiff or the surrounding areas, one of the first questions you'll likely ask is:
“How much will a renovation cost?”
Renovation projects can vary significantly depending on the condition of the property, the scale of work required, and the level of finish. Understanding typical costs and what influences them can help you plan your budget more effectively.
At Mark James Building Contractors Ltd, we regularly carry out renovation projects across Cardiff and South Wales, helping homeowners modernise properties and improve living spaces.
Typical Renovation Costs in Cardiff
Every project is different, but the following guide can provide a general idea of what homeowners might expect.
Cosmetic Renovations
Basic updates such as decorating, flooring, and minor improvements.
Typical cost range:
£5,000 – £20,000
Partial Renovations
Updating key rooms such as kitchens or bathrooms, including plumbing and electrical work.
Typical cost range:
£20,000 – £60,000+
Full Property Renovations
Complete renovation of an entire house, including structural alterations, services and finishes.
Typical cost range:
£60,000 – £150,000+
Larger properties or extensive structural work can exceed these figures.
What Factors Affect Renovation Costs?
Several factors influence the overall cost of a renovation project.
Property Condition
Older properties may require additional work such as:
- Structural repairs
damp treatment
replacement wiring or plumbing
These issues often become apparent once renovation work begins.
Structural Alterations
Many homeowners choose to remove walls or alter layouts to create open-plan living spaces. Structural changes usually involve:
steel beams (RSJs)
structural calculations
building control approval
Kitchens and Bathrooms
These rooms typically account for a large portion of renovation budgets due to plumbing, electrical work, appliances and finishes.
Quality of Finishes
Your choice of finishes can significantly affect the cost. Examples include:
flooring materials
kitchen units and appliances
bathroom fittings
lighting and electrical fixtures
Access and Site Conditions
Properties with restricted access or limited parking may require additional labour and planning.
Is Renovating Worth It?
For many homeowners, renovating can add significant value to a property while improving how the space works day-to-day.
Common renovation goals include:
modernising outdated interiors
creating open-plan living areas
improving energy efficiency
increasing property value
In many cases, renovating can be more cost-effective than moving house.
How to Budget for a Renovation
To avoid unexpected costs, it’s important to plan carefully.
Allow for a Contingency
A contingency budget of 5–10% is recommended to cover unforeseen issues.
Finalise Design Before Starting
Changes during construction can increase both costs and project timelines.
Work with Experienced Contractors
Professional builders can help identify potential challenges early and provide realistic pricing.
Frequently Asked Questions
How long does a renovation project take?
Renovation timelines vary depending on the scope of work. Smaller projects may take a few weeks, while full house renovations can take several months.
Do renovations require building regulations approval?
Structural changes, electrical work, plumbing alterations and certain other works usually require Building Regulations approval.
Can I live in my house during renovation work?
In some cases yes, although it depends on the scope of work and level of disruption involved.
Planning a Renovation in Cardiff?
If you're considering renovating your property in Cardiff or the surrounding areas, Mark James Building Contractors Ltd can help.
We provide professional renovation services and clear quotations so homeowners understand the full scope of their project.
Contact us today to arrange a site visit and free quote