Greener choices and trade-offs

Most renovations have opportunities to do something greener than the default — better insulation, more efficient heating, lower-impact materials. This article focuses on the upgrades we end up recommending on most projects.

The upgrades that show up on most of our projects

A handful of interventions come up again and again because they deliver more than they cost in energy or comfort terms:

• Insulation while walls are open. Internal or external wall insulation, loft insulation, floor insulation. The marginal cost during a renovation is much lower than retrofitting later. If walls are coming down, this is the moment.
• Glazing upgrades if your existing windows are single-pane or poor double-glazing. Triple glazing can be worth it on north-facing or street-facing aspects; standard A-rated double-glazing covers most other situations well.
• Heat-recovery ventilation (MVHR). A continuous, balanced ventilation system that captures heat from extracted air and uses it to warm incoming air. Most impactful in well-insulated, airtight homes — and the gains compound with the insulation work above.
• High-rated appliances. Specifying A or A+ rated appliances where you're buying new — fridges, freezers, washing machines, dishwashers, ovens. The cost difference at point of purchase is small; the running-cost savings over the appliance's life are real.
• Aerated taps and low-flow showerheads. A small specification choice during the bathroom or kitchen fit-out that quietly takes a meaningful slice off your water and hot-water bills.
• Heat pumps where the home and use case suit them. They're not right for every property, but where they fit, they're a meaningful long-term shift.
• LED lighting throughout as a default. The installed cost is now comparable to halogen.
• Heating controls. Smart thermostats, room-by-room control, properly balanced systems. Often more impact than people expect, for less cost.

Where the trade-offs are real

A few decisions are harder calls:

• Solar PV vs not. Depends on your roof, your usage pattern, your tariff, and your appetite for the up-front cost.
• Renewable materials vs durable conventional ones. A bamboo floor is renewable; a hardwood floor lasts longer. Both are choices a thoughtful customer can make.

How to think about it

Two questions usually decide it:

• What's the lifetime cost? Up-front cost plus running cost over a sensible period.
• What does the home need? What's it for, who lives in it, how long will you be there?

Talk to your designer and your build advisor. Both have seen the trade-offs play out across many projects. Our home energy assessment, free and not pushy, is a useful starting point if you want a structured read.

What this means for you

You don't have to do everything. A renovation that pulls a few of these levers — insulation while walls are open, MVHR in a tight envelope, high-rated appliances, the right taps — is often more impactful than one that tries to be the perfect green build. Pick the upgrades that suit your home, your budget, and your life, and build them in cleanly.

Related articles

• The free home energy assessment
• How to keep your project on budget