Renovation: Is doing less better than building?
Hello, it’s Lionel. In general, renovating is better than building if the existing structure is sound, well located, and the work is manageable. New construction becomes more appealing when the structure is too badly damaged or you want a custom, energy-efficient home backed by strong warranties. To make your choice, compare the total budget, timelines, grants, and running costs—not just the price per square meter.
Start here:
Before viewing a property or signing anything, work out the costs of both options for a comparable level of comfort. This comparison of renovation and construction and this guide to choosing between building and renovating can help you ask the right questions.
- Have the roof, foundations, damp, and utilities inspected before buying an older property.
- Get detailed quotes for the priority work, then add a 10 to 15% contingency.
- Compare the cost of the land and utility connections with the price of the home to renovate, including notary fees.
- Check which grants are available based on your income, home, and planned work, particularly through France Rénov’.
- Estimate energy bills and maintenance costs over several years, not just the cost of the work.
These initial figures point you in a direction. After that, the condition of the building and its location often tip the balance.
Renovation or new construction: comparing the real cost
A major renovation often costs around €900 to €1,500/m², while a new build under a CCMI contract typically comes to around €1,400 to €2,200/m², excluding land, depending on the region and specifications. These ranges are indicative: structural rehabilitation can cost more than a new build, while minor work costs much less.
For a reliable renovation-versus-construction comparison, include the purchase price, notary fees, surveys, utility connections, and exterior landscaping. Notary fees for an existing property are often 7 to 8% of the price; for a new build, they’re more like 2 to 3%. But a cheap plot can quickly lose its advantage if utility networks are far away.
| Criteria | Renovate | Build |
|---|---|---|
| Cost of work | Around €900 to €1,500/m² for a major renovation | Around €1,400 to €2,200/m², excluding land |
| Indicative timeline | A few months to over a year, depending on the project | Often 14 to 24 months, including the land purchase and procedures |
| Grants | MaPrimeRénov’, CEE, éco-PTZ, and reduced VAT, depending on your situation | PTZ may be available subject to conditions; fewer grants |
| Energy performance | Depends on the work and the existing building | Complies with RE2020 requirements upon completion |
| Warranties | Related to the work and the contractors’ insurance | Protective framework of the CCMI, if this contract is chosen |
Grants can substantially reduce the out-of-pocket cost of an energy renovation, but the amount depends on your income, home, and the rules in effect when you apply. Check the conditions before signing a quote: some schemes require an RGE-certified contractor and an application in advance.
Renovating bit by bit: a good idea, with conditions
Spreading out the work helps distribute the costs, but can end up costing more if the different stages aren’t planned properly. Insulating a room before upgrading the ventilation, for example, could cause damp problems or mean having to redo work later.
Start with the elements that protect the home and reduce energy loss: the roof, walls, windows, ventilation, and heating. An energy audit can help you plan the work in the right order and improve energy performance without spending money on finishes too soon.
A story often comes up on the job: a couple buys a house at a low price and starts by renovating the kitchen. A few months later, an old leak means the roof and ceilings have to be redone. The right move would have been to check the building envelope before choosing the tiles.
As a simple rule puts it: “First the essentials, then the aesthetics.” It’s the best way to keep a renovation under control.
New construction: when a custom design is worth the effort
Building lets you design the layout around your needs and achieve a high-performance building envelope from the start. RE2020 sets requirements for the building’s energy performance and environmental impact, among other things. On the other hand, you need to find a plot with planning permission, plan for utility connections, and allow for administrative and construction delays.
If you choose a CCMI, read the specifications carefully: they set out the materials, equipment, and finishes. Ask for specific references to be included rather than vague wording. The contract provides a framework of warranties, including a guarantee that the home will be delivered at the agreed price and within the agreed timeframe.
New construction isn’t automatically the most environmentally friendly option. It uses resources and can contribute to urban sprawl. Renovating existing buildings, reusing materials, and avoiding land development also contribute to sustainable urban planning and can reduce the project’s carbon footprint.
Two scenarios to help you decide quickly
If it’s a well-located house with a sound structure and work that can be costed, renovating may offer a better balance, especially if you’re eligible for grants. If it’s a severely deteriorated, poorly laid-out building or one that would be expensive to bring up to code, compare a full rehabilitation with a new build, or even demolition and reconstruction where local rules allow.
A three-step approach to moving forward
- Step 1 — Assess: have the structure, damp, roof, utilities, and energy performance checked. If you’re buying, ask for the available inspection reports and, if necessary, get a professional’s opinion as well.
- Step 2 — Cost it out: get several comparable quotes and include additional fees, possible temporary accommodation, and a contingency for unexpected costs. For a new build, include the land, surveys, utility connections, and landscaping.
- Step 3 — Decide: weigh up the total cost, timelines, grants, location, and your plans for the future. If the difference is small, choose the option that best meets your needs in the long term.
The choice isn’t simply “older means cheaper” or “new means easier.” A well-assessed project with a sound budget mainly helps you avoid discovering too late that the projected savings won’t cover what you actually need.
Frequently asked questions about renovation and construction
Is renovating always cheaper than building?
No. A minor renovation generally costs less, but a major rehabilitation involving structural work can match or exceed the cost of the work involved in a new build. Also compare the land, additional costs, and grants.
What contingency should I allow for unexpected renovation costs?
It’s often a good idea to set aside 10 to 15% of the renovation budget. You may need a larger contingency if the building is old, the structure is poorly understood, or inspections reveal potential risks.
Can a renovation achieve good energy performance?
Yes, depending on the condition of the building and the scope of the work. Insulation, ventilation, and the heating system should be planned together; an audit can help set priorities.
How long does it take to renovate or build?
A renovation can take anywhere from a few months to over a year, depending on the project. A new build often takes 14 to 24 months, including finding a plot, completing the procedures, and carrying out the work.
Thank you for reading this far .With friendship; Lionel “P.S.; Leave me a comment, I’ll reply personally
