Electric underfloor heating in Randwick
We install electric underfloor heating across Randwick, where the flat came before the house and most of those flats are walk ups. Flats are 55.5% of homes here, so a mat under a bathroom floor is the bulk of what we install. Mornings are mild by Sydney standards and the tiles are cold anyway, because a tiled floor holds the overnight temperature until something warms it. Under tile heating mats go into three storey block bathrooms and Federation house bathrooms alike here.
The benefits of electric underfloor heating in Randwick
Flats are 55.5% of homes here and separate houses 26.8%, and the flats outnumber the houses outright. Most of the reasons below are about a building put up between the 1950s and the 1970s. The rest are about the rules Council has written since, and the power this area can use.
Most flats here are three storey walk ups
13,526 homes here sit in three storey blocks, which is 26.3% of every dwelling in the area. Council's own plan says those blocks were built between the 1950s and the 1970s and often need refurbishment. The benefit of under tile heating mats is that they go into the new tile bed of that bathroom. Nothing is drilled into the block's slab and no cable is ever cut to fit the room.
Tell Council before you touch a listed interior
There are 533 heritage items here, and not one of them lists an interior on the schedule. The controls still reach inside, naming repairing timber floors, electrical work and installing insulation as minor works. Council asks that you notify it before any maintenance or repair and wait for a written response. A written response from Council is the thing to have in hand before the tiler starts. Under tile heating mats add nothing visible to a listed room, because only our thermostats sit above the floor.
New homes are steered away from gas
Council's residential controls encourage electrical appliances for cooking and space heating in all new residential developments. They add that gas space heating should be avoided unless clear justification is provided. A development application proposing gas heating must carry a comparison table against an electric option. In slab heating cable is that electric option, and it needs no flue, no meter and no gas line. Renovations sit outside that wording, so on an existing home the choice is still yours.
Council pays part of your sub floor insulation
Council's sustainability rebates cover part of the cost of insulation, funded by its own environmental levy. Sub floor insulation has to reach a minimum R value of 1.4 before it qualifies. The benefit for floor heating is that insulating below a timber floor sends the heat upward instead of into the sub floor. In screed heating cable over that insulation then warms the room rather than the space beneath it. That is where insulating from below does the most, because the heat has nowhere else to go.
Run floor heating on a controlled load circuit
14.3% of households here have a controlled load or off peak circuit, which is about one in seven. On a smart meter that circuit runs from 10am to 4.45pm and again from 10pm to 6.45am through winter. The benefit is that floor heating runs on those hours and the tiles are warm by morning. Where there is no such circuit, our thermostats do the same job on a timer and a floor sensor.
The southern suburbs are house and solar country
Phillip Bay is 84.6% separate houses, and rooftop solar reaches 30.3% of houses in that postcode. Our thermostats can be set to run floor heating in the middle of the day on power the roof is making. A screed or slab floor carries that warmth through the evening without drawing anything more. In a walk up flat there is usually no private roof, so the timer does that job alone.
What we would install in Randwick
Almost every Randwick floor already exists, and that is what puts a mat ahead of a cable here.
A mat under the tiles
Flats are 55.5% of homes here and nearly nine in ten of them pre date 2011. Under tile heating mats go in while the bathroom is open, and the structure below is never cut into.
Under tile heating matsCable in a screed
The heritage controls say a ground floor rear addition remains the preferred option for a period house here. In screed heating cable goes into the topping of that addition, where a timber floor has no mass.
In screed heating cableCable in a slab
About 75 new houses a year are approved across the whole area, so a slab is the rarest job here. In slab heating cable is laid with the reinforcement, so the decision belongs on the drawings and not on site.
Slab heating cables, dual coreWhy Randwick properties choose us
We install across Randwick and the rest of the Randwick area, and we size every job from your floor plans before we quote. Installation is always subject to checking installer availability, which we do before we agree a day.
How we install underfloor heating in Randwick
Plans first, then a quote
Send us the plans for your new home, renovation, office or hotel. We measure the heated areas from them, calculate the cable size and quote the materials. If you want us to install, a second quote covers the installation labour. Nothing is ordered and no day is booked until you accept.
Installation day
Once you accept and tell us the job site is ready, we agree a day, subject to checking installer availability. The floor has to be prepared and ready before that day: your own trades handle levelling, waterproofing and anything else above the slab. Our installer lays the cable or the mat, fits the thermostat, and tests the system with our own equipment before leaving site. Your tiler covers it with the screed or the tile bed.
In a strata building the path is different again
In a New South Wales strata scheme the lot boundary generally sits at the upper surface of the floor. The slab underneath belongs to the building rather than to you. We lay the mat into the tile bed instead of touching that slab, and nothing is drilled or chased into it. Installing hard flooring, and the wiring and power points that come with it, is a minor renovation under the Strata Schemes Management Act 2015. Waterproofing is carved out of that definition, so a full bathroom rebuild goes to a special resolution rather than an ordinary one. Your builder or project manager deals with the owners corporation, and we build to whatever that approval allows.
Rock work sets the week, not the heating
Rock excavation and sawing are allowed only between 8am and 3pm on weekdays here, and the northern ridges are sandstone. On a job that needs rock cut, that window sets the programme and the heating is designed into the dates rather than around them. The general hours are wider, 7am to 5pm on weekdays and 8am to 5pm on Saturday, with nothing on Sundays or public holidays. Working outside them needs ten days of notice, so the floor heating day is fixed well in advance.
Underfloor heating for Randwick homes
A flat area before it was a flat city
The flat was already the majority building type here in 2006, at 52.1% of homes. That stock then grew only 12.6% between 2011 and 2021. About nine in ten of today's flats therefore pre date 2011, and the walk up blocks among them are older again. Separate houses went the other way, from 15,830 in 2006 to 13,790 in 2021. Little Bay is the only genuinely new belt, and under tile heating mats go into the rest of the area.
Four belts, and they want different things
Coogee is 79.9% flats and Randwick suburb 68.3%, and that pair is where most of our bathroom work lands. Kensington and Kingsford are the university belt, with a median age of 32 to 33. A high rental share there makes a single room job the normal size. Maroubra holds 30,722 people and the area's only real tower stock. The house belt at Phillip Bay and La Perouse is where in screed heating cable across a whole floor is worth quoting.
What the old blocks ask for first
A 1960s walk up gives you a concrete floor and a switchboard sized for the decade it was built in. The bathroom in it has usually never been lifted before now. The floor is the easy part, and the circuit is the part worth settling early, because the board may not have room for another one. We size the heated area and the cable from your floor plan, so the board question is answered first.
Winter mornings in Randwick
Sydney Airport is the nearest Bureau of Meteorology station to every suburb here, and Observatory Hill in the city is the comparison beside it.
- July nights
7.4°C at Sydney Airport, the nearest land station to every suburb here, against 8.1°C at Observatory Hill. A tiled floor sits close to that overnight, and it is the first thing a bare foot meets in the morning.
- Frost
About two nights in five years at or below 2°C at Sydney Airport, and none on record at Observatory Hill. The overnight low is what decides how cold the floor is at seven in the morning.
- Climate zone
Zone 5 on all land here, from Clovelly down to La Perouse. Insulation under the heating is what keeps the warmth in the room, and it is sized from that zone.
Get a free quote in Randwick
Tell us what you need done in Randwick and we will get back to you with a price as soon as we can. There is no obligation to go ahead.
Services we provide in Randwick
New home builds
Home renovations
Bathroom renovations
Apartments
Hotel bathrooms
Office buildings
Cold storage and frost heave
Suburbs we service in Randwick and surrounds
We install across the Randwick area and the surrounding localities, and we check installer availability before we agree a day. If your suburb is not listed below, contact us and we will confirm coverage.
Frequently asked questions about Randwick
Do you cover every suburb in the Randwick area?
Yes. We install across the Randwick area and the surrounding localities, including every suburb listed on this page. We check installer availability before we agree a day, which is the one condition that travels with every job. If your suburb is not shown, contact us with the address and we will confirm coverage before we quote.
What are your service hours in Randwick?
Our hours are Monday to Friday, 8am to 5:30pm, and we are closed on Saturday and Sunday. Plans and photographs can be sent at any time through the quote form on this page. If you need us on site in Randwick, the day is agreed once we have checked installer availability. It is worth sending the plans as early as you can.
Is a walk up flat bathroom a good candidate for this?
Yes, and it is the most common job we are asked for here. The mat goes into the tile bed while the bathroom is open rather than into the slab underneath. Most walk up blocks here were built between the 1950s and the 1970s. Under tile heating mats go in at that first retile, which is the one moment they cost least to install.
Is a Maroubra tower any different from a walk up?
No, not for the method. Maroubra holds 30,722 people and the only real tower stock in the area, and a tower bathroom usually sits directly over another home. The waterproof membrane is the part everyone watches, and the mat is laid above it so the membrane is never pierced. What does change is access. The building sets the hours and the lift booking, and we fit the floor heating inside those dates.
Does Randwick allow gas heating in a new home?
Yes, but it is discouraged. The residential controls in effect since 27 July 2026 encourage electrical appliances for cooking and space heating in all new residential developments. Gas ovens and space heating are to be avoided unless clear justification is provided. An application proposing gas has to carry a comparison against an electric option. Renovations sit outside that wording, so under tile heating mats in an existing home raise no question.
Can I claim anything back on insulating under the floor?
Yes, on insulation. Council's sustainability rebates cover a quarter of the cost, and sub floor insulation has to reach a minimum R value of 1.4 before it qualifies. Insulation that BASIX or your consent already demands is outside the scheme. It is Council's own programme rather than a state one, so it does not travel to the next area. Check the current terms with Council, because the rebate is for insulation rather than for floor heating.
Is it actually cold enough here to be worth it?
Yes, on the mornings, though the winters are mild. The July mean minimum is 7.4°C at Sydney Airport and 8.1°C at Observatory Hill. Nights at or below 2°C come about twice in five years at the airport, and none at all on record at Observatory Hill. The benefit of under tile heating mats is that the tiles are warm before you stand on them.
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