Ensuite Renovations in Auckland
Alchemy Bathroom Renovations Auckland renovates ensuites from the framing out. That covers master ensuites with a double vanity, small ensuites with no window, walk-in shower conversions, layout changes and apartment ensuites. Nick McKelvie runs every job. He is a Licensed Building Practitioner (BP1021390) and a registered producer statement author for waterproofing (PSA127420), and his team has carried out full bathroom renovations across Auckland for 30 years, more than 1,200 of them.
An ensuite shares a wall with the bedroom, so the waterproofing membrane and the extractor fan decide whether both rooms stay dry. Alchemy ducts every extractor fan to the outside and guarantees the waterproofing for 15 years. Most same-layout ensuites are finished in about three weeks on site. Your ensuite renovation starts with a free site visit. Nick measures the room, looks at the shower waste and the fan, and sends a written quote that lists every trade and every fixture.
15 Years
Waterproofing guarantee
BP1021390
Licensed Building Practitioner
PSA127420
Producer statement author
30 Years
Renovating Auckland bathrooms
1,200+
Bathrooms completed in Auckland
4.7 ★
From 70+ Google reviews
Ensuite services
Ensuite Renovations We Carry Out Across Auckland
Six kinds of job, each planned and programmed on its own terms.
Full Ensuite Renovation in the Same Layout
Keeping the shower, vanity and toilet where they are is the quickest ensuite we renovate, because the drainage stays where it is.
The room comes back to the framing and gets new wall linings, a new waterproofing membrane, tiles, fittings and a ducted extractor.
Tell us at the site visit if the wall behind the shower feels soft. That framing gets replaced before anything new goes on.
Master Ensuite Renovations
Our master ensuite renovations suit two people getting ready at the same time, with a double vanity, a walk-in shower and room for a freestanding bath if the floor allows.
Large-format porcelain needs a flat substrate, so the floor is levelled before the waterproofing membrane goes down.
If the ensuite opens off a walk-in wardrobe, say so. Steam and clothes need a door and a fan that can keep up.
Small Ensuite Renovations
Small ensuites are where layout matters most, and we plan them around the door swing before anyone picks a tile.
A wall-hung vanity, a back-to-wall toilet and a cavity slider in place of a hinged door each give floor space back.
In a windowless ensuite the extractor is the only thing moving steam out, so it gets ducted outside and sized for the room.
Walk-In Shower Conversions
Replacing an acrylic cubicle or a shower over a bath with a tiled walk-in shower changes an ensuite more than any other choice. We build the shower floor with a fall to a linear or centre waste.
A tiled wet-area shower needs a building consent in Auckland. Nick builds to the consented plans and issues the PS3 for the waterproofing.
The Bayview ensuite on our projects page got a walk-in shower with a single frameless panel.
Ensuite Layout Changes
Moving the shower to another wall or turning the toilet away from the bedroom door is work we plan around where new drainage can run.
On a concrete slab that means cutting the floor. On a timber floor the plumber works from under the house.
Where a change alters primary structure, such as a floor joist or a load-bearing wall, it is restricted building work, and Nick does it or supervises it.
Apartment and Townhouse Ensuites
Apartment and townhouse ensuites are jobs we schedule around neighbours, lifts and shared walls as much as around the room itself.
Moving a fixture in a multi-level apartment can need a building consent because of the fire separation between units, so any layout change gets checked before design starts.
Send us the body corporate rules on working hours and lift bookings before the visit.
What happens when you call
How an Alchemy Ensuite Renovation Runs
Five steps from the first phone call to the day you use the ensuite again.
Free Ensuite Site Visit
Nick measures the room, looks at the shower waste, the extractor and the wall shared with the bedroom, and tells you which parts of the job are likely to need a building consent. No charge and no obligation.
Written Quote and Ensuite Layout
The quote lists every trade, every fixture and the build order. If the layout is changing, the measured plan and the fixture schedule are settled at this step.
Ensuite Strip-Out and New Framing
Everything comes out back to the framing. Rotten timber, corroded pipe and any shower wall that was never lined get replaced before the new linings go on.
Waterproofing Membrane, Then Fit-Out
The waterproofing membrane goes on the floor and the shower walls and cures before the tiler starts. Then come tiles, vanity, screen, toilet, tapware and the ducted fan. On a consented job Nick issues the PS3.
Ensuite Handover and Guarantee
You walk the room with Nick, every fixture is run, and the clean is done. The waterproofing is covered by Alchemy's 15-year guarantee from that day.
Free, no-obligation site visit
Book a Free Bathroom Site Visit in Auckland
Nick comes to the bathroom, talks through the layout with you, and sends a written quote that lists every trade and every fixture. No obligation. Monday to Friday, 8am to 5pm.
Published ensuite pricing
Ensuite Renovation Cost in Auckland
$15,000 to $28,000
That is what a same-layout ensuite costs with Alchemy. Moving the shower or toilet, or building a master ensuite, puts the job into the higher tiers in the table.
A smaller ensuite does not halve the price. It still needs a shower waste, a waterproofing membrane, an extractor, a plumber, an electrician and a tiler.
Treat these ranges as a planning guide. Nick confirms your ensuite price in writing once he has seen the room.
| Ensuite job | Range | What sits in it |
|---|---|---|
| Ensuite renovation, same layout | $15,000 to $28,000 | New linings, waterproofing membrane, tiles, vanity, shower, toilet, tapware, ducted extractor and paint |
| Ensuite with a layout change or a tiled walk-in shower | $24,000 to $40,000 | Everything above plus new drainage runs, a tiled shower floor with a fall to the waste, and consent inspections |
| Master ensuite | $40,000 to $65,000+ | Double vanity, walk-in shower, freestanding bath where it fits, underfloor heating, large-format porcelain or stone |
| Apartment ensuite | Quoted per job | Priced on access, lift and parking, body corporate working hours, and whether any fixture moves |
Before you ask for an ensuite quote
What Moves the Price of an Ensuite Renovation
Five things decide which of those tiers your ensuite lands in.
Moving the shower or toilet
New drainage through a concrete slab means saw-cutting the floor. Under a timber floor the plumber works from beneath the house.
The shower you choose
A tiled walk-in shower needs a building consent, a shaped floor fall and more waterproofing membrane than an acrylic cubicle in the same spot.
What sits behind the linings
An ensuite that has leaked into the wall shared with the bedroom needs new framing before the rebuild. The strip-out shows how far the water went.
Tiles and tapware
Stone, large-format porcelain and designer tapware push a job up the range. Standard ceramic tile and a floor-standing vanity keep it down.
Access to the room
A third-floor apartment with lift bookings and set working hours takes longer to strip out and supply than a ground-floor ensuite near the driveway.
Why homeowners call Alchemy for an ensuite
Why Auckland Homeowners Trust Alchemy With an Ensuite
An ensuite sits against the room you sleep in. These are the six things that keep it dry.
A Licensed Building Practitioner on every ensuite
Nick McKelvie holds LBP number BP1021390. When a layout change touches a floor joist or a load-bearing wall, he does that work or supervises it.
The PS3 comes from the person who did the work
Nick is a registered producer statement author, PSA127420. On a consented tiled shower he issues the PS3 Auckland Council asks for before it issues the Code Compliance Certificate.
15 years on the waterproofing membrane
The waterproofing membrane is the layer between your shower and the bedroom wall. Alchemy guarantees it for 15 years from handover.
Extractor fans ducted to open air
Every extractor we fit goes out through the wall or the roof and is sized for the room. A fan that vents into the ceiling space leaves the steam in the house.
One team and one phone number
Alchemy sequences the carpenter, plumber, electrician, waterproofing membrane applicator, tiler and painter. You deal with one person from the site visit to handover.
4.7 stars from 70+ Google reviews
The reviews are public and carry real names. Sandra had a complete ensuite re-fit, and Nick organised every trade from the cabinets to the tilers.
23.5%
Pakuranga Heights South West
2.9%
Stonefields West
The part behind the tiles
Ventilation, Mould and Consent for Auckland Ensuites
An ensuite without an opening window relies on its extractor fan for all of its ventilation. The Building Code covers this in clause E3, Internal Moisture, which asks for wet-area surfaces that are impervious and easily cleaned, and for enough ventilation to limit moisture building up. Tiles and grout do not keep water out. The waterproofing membrane under them does, dressed into the shower waste and turned up the walls.
Mould is not spread evenly across Auckland. At the 2023 Census, 23.5% of occupied homes in Pakuranga Heights South West reported mould larger than an A4 sheet. In Hillcrest North on the North Shore it was 23.8%. In Stonefields West the figure was 2.9%, and in Millwater South 3.1%. Every Alchemy ensuite quote includes a new extractor ducted to open air, whichever end of that list your suburb sits at.
Consent depends on what changes. Auckland Council's guidance on bathroom renovations says a consent is typically not needed to replace a shower, basin or toilet pan in its existing position, and that installing a tiled wet-area shower does need one. Moving fixtures in a multi-level apartment may need one as well. Alchemy does not lodge consents. Nick tells you at the site visit which parts of your ensuite are likely to need one, builds to the consented plans and issues the PS3 for the waterproofing.
From the Google Business Profile
Reviews From Auckland Ensuite and Bathroom Clients
Sandra Frost
September 2026
Alchemy Bathrooms took on a complete re-fit of ensuite. Nick organised whole project from cabinets/shower/fittings to plumbing, electricians, tilers etc, the whole process was seamless and communication was excellent. Nick kept to deadline and end result was fantastic, very happy with bathroom.
Rob Smith
2023
To anyone wanting to renovate their bathroom, I would highly recommend Alchemy Bathrooms. … I recently had them renovate my ensuite bathroom, and I couldn't be happier with the outcome. The entire process was simple and stress-free from beginning to end.
Loan Nguyen
Edited 2024
Our main and en-suite bathrooms were expertly remodeled by Alchemy, who made greater use of the available space. Nick oversaw the entire project, starting with a fantastic design, making sure the remodeling adhered to the house's structure, and organizing the work on schedule. They are also highly professional.
Before you book the site visit
Ensuite Renovation FAQs for Auckland Homes
From $15,000 for a same-layout ensuite up to $65,000 or more for a master ensuite with a double vanity and underfloor heating. An ensuite with a layout change or a tiled walk-in shower sits at $24,000 to $40,000, and apartment ensuites are quoted per job. The written quote after the free site visit is the figure to plan on.
Talk to Nick About Your Ensuite
One phone call books the free site visit. Nick comes to the ensuite, talks through the layout with you, and sends a written quote that lists every trade and every fixture.
Phone
Hours
Monday to Friday, 8:00am to 5:00pm
Address
Suite 7646, 17B Farnham Street, Parnell, Auckland 1052
Service area
All of Auckland: North Shore, West, East, South and Central
Contact Alchemy
Alchemy Bathroom Renovations Auckland
Led by Nick McKelvie, Licensed Building Practitioner BP1021390 and producer statement author PSA127420. Complete bathroom, ensuite, small bathroom, villa, laundry and commercial renovations across Auckland, with a 15-year guarantee on the waterproofing.
Mon to Fri, 8am to 5pm
Monday to Friday, 8:00am to 5:00pm. Free site visits across Auckland.
