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Renovations & Extensions

Home Renovations and Extensions in Christchurch

Sanctus Builders handles home renovations and extensions across Christchurch, from a single kitchen or bathroom through to a full-home renovation or a new extension. Felipe scopes every job in person, gives a straight price for what the work actually needs, and stays on it until it's handed over properly. No inflated quotes, and no disappearing halfway through a renovation.

5.0 on Google
What's Included

What's Included in a Renovation or Extension

"Renovations & Extensions" covers six kinds of work. Here's what each one actually involves.

01

Kitchen Renovations

Full strip-outs and rebuilds, cabinetry replacement, layout changes, and smaller kitchen updates. Most homeowners call Sanctus Builders for this one first.

02

Bathroom & Ensuite Renovations

Retiling, waterproofing, fixture replacement and full bathroom strip-outs, including older Christchurch homes with outdated plumbing runs that need rerouting.

03

Full-Home Renovations

A property-wide renovation covering multiple rooms at once, usually staged so parts of the house stay liveable while work continues elsewhere.

04

Room Alterations & Open-Plan Conversions

Removing or relocating internal walls to open up a floor plan, including the structural work that comes with taking out a load-bearing wall.

05

Extensions

Adding new floor space to an existing home, from a single-room addition to a larger footprint extension, tied into the existing structure and roofline.

06

Garage Conversions

Turning an existing garage into livable space, insulated, lined and wired to match the rest of the house.

Our Process

How a Renovation or Extension Runs, Start to Finish

Every renovation is different, but the process behind it stays the same. This is what happens on a Sanctus Builders renovation, not the generic four-step version.

01

Walkthrough and Scope

Felipe comes to the property, looks at what's actually there, and talks through what you want out of the job.

02

Structural Check and Pricing

Any structural work gets assessed before a price is given, not after work has started.

03

Consent, If Needed

Extensions and structural alterations get the council sign-off handled as part of the job.

04

Staged Build

Bigger renovations get staged so the rest of the house stays usable where possible.

05

Final Walkthrough

A final walkthrough before the job is signed off, so nothing gets missed.

Villas & Character Homes

Renovating Villas, Brick and Tile, and Character Homes

A lot of the renovation work Sanctus Builders takes on is in Christchurch's older housing stock, villas, 1970s brick and tile homes, and weatherboard cottages. These homes come with their own structural quirks: floor levels that have shifted over decades, load-bearing walls in places a modern floor plan wouldn't put them, and wiring or plumbing that predates current standards. Extending or opening up a home like this means checking what's holding the existing structure together before any new work goes in, not just building around it and hoping.

Structural First

Sanctus Builders treats the structural assessment as part of the renovation itself, not a separate cost that shows up later. Three things get checked at the quoting stage, before any wall comes down.

Floor Levels

Checked for the drop or lean older villas and brick and tile homes pick up over decades.

Load-Bearing Walls

Identified before any wall comes out, not discovered halfway through the job.

Subfloor Condition

Assessed so any rot or movement is priced in from the start, not added on later.

Consent & Compliance

Council Consent and Compliance on Renovation Work

Not every renovation needs council consent, but extensions, structural wall removal, and some bathroom work usually do. Sanctus Builders scopes this at the quoting stage, so it's clear from the start whether a job needs consent and what that adds to the timeline.

Usually Needs Consent

  • Extensions that add new floor space
  • Removing or altering a load-bearing wall
  • Structural changes to the roofline
  • Bathroom work involving new plumbing runs

Usually Doesn't Need Consent

  • Cosmetic kitchen refits, cabinetry and finishes
  • Retiling or refitting an existing bathroom layout
  • Non-structural interior updates
  • Garage conversions with no structural change

Skipping consent on work that needs it causes problems later, at resale or during an insurance claim, so it's handled properly from the outset rather than left for the homeowner to sort out.

Pricing

What Affects the Cost of a Renovation or Extension

Sanctus Builders doesn't publish fixed renovation prices, because the real variables change the number too much for a price list to mean anything. These are the things that actually affect cost:

FactorWhat It Affects
Size of the spaceA single bathroom prices very differently to a full-home renovation.
Council consentAdds time and documentation to the job where it's needed.
Condition of the existing structureOlder homes sometimes need remedial work uncovered once a wall or floor is opened up.
Finish levelFrom a straightforward refit through to a full custom fit-out.
StagingWhether the space needs to stay partially usable during the build.

Every renovation gets a free, honest quote after Felipe has actually seen the job, not a number pulled off a price list.

Reviews

What Christchurch Homeowners Say

Sanctus Builders holds a five out of five rating across Google and Builders Crack. Here is what some of those customers had to say.

★★★★★ 5.0 across Google and Builders Crack
★★★★★

"Friendly, great communication and great tidy work"

Sophie Buxton
Google review, 5 stars
★★★★★

"Great price. Fantastic professional service! Felipe was super efficient and I was impressed with his knowledge and quality of workmanship. I will definitely keep him on my list for future jobs! Thank you Felipe, and your wonderful assistant!"

Lee Pritchard
Google review, 5 stars
★★★★★

"Reasonable price. Amazingly quick response to request for a builder. A great skilled worker with ability to bring in helpers as required. Nothing appeared to be too difficult, from laying paving to assembling a large kitset workshop shed, in a fast and efficient manner. Would definitely contact for future work."

Bruce Oswin
Google review, 5 stars
★★★★★

"Felipe is an amazing guy, super friendly, helpful, flexible and hardworking. We've loved having him in our house doing renovations. The work looks good and he did exactly what we wanted. Would definitely recommend. We'll be getting him back to do more."

Carolyn Robertson
Google review, 5 stars · Kitchen remodelling
★★★★★

"Tough job completed to a high standard and on time. Would definitely use again."

Verified Builders Crack review
5 stars
FAQs

Common Questions About Renovations and Extensions in Christchurch

How much does a full-home renovation cost in Christchurch?

It depends on how many rooms are involved, the condition of the existing structure, and the finish level you want. There's no fixed number that means anything without seeing the job, so Felipe quotes it after a walkthrough, not off a price list.

Can I still live in the house during a renovation?

Often, yes. Bigger renovations get staged so parts of the house stay usable while work continues elsewhere, though a full-home renovation or a major structural extension may need part of the house vacated for a stretch. This gets discussed upfront, not worked out halfway through.

Do you renovate homes outside Waltham and Opawa?

Yes. Sanctus Builders is based in Waltham and works on renovations and extensions right across Christchurch, not just the inner suburbs.

Do I need council consent for my renovation?

It depends on the work. Extensions and structural changes usually need consent, while cosmetic updates like a kitchen refit generally don't. Felipe scopes this at the quoting stage so there are no surprises partway through.

Can you handle both the structural work and the finishing work?

Yes. Sanctus Builders manages a renovation from the structural checks through to the final fit-out, bringing in trusted trades for specialist work when a job needs an extra set of hands, rather than handing the project off partway through.

What's included in a renovation or extension?

Felipe works to your budget, from tiles through to Hardiglaze joinery, and brings in the trusted plumbers, tilers, waterproofers and electricians the job needs. He manages the whole project, so you get one competitive quote, clear communication, and a smooth handover.

Will the work meet council requirements?

Yes. A good renovation builder knows how to build well and within council policy, and that is what keeps a home safe and healthy. Meeting council requirements is the minimum standard on every Sanctus Builders job.

Service Area

Renovations and Extensions Across Christchurch, Based in Waltham

Sanctus Builders is based on Opawa Road in Waltham and takes on kitchen, bathroom, full-home and extension work right across Christchurch, from older villas in the inner suburbs to homes further out. Wherever the renovation is, the same honest price and the same standard of work applies.

Waltham Opawa Sydenham Addington Spreydon Beckenham Cashmere Somerfield Woolston Heathcote Sumner Riccarton Fendalton Merivale St Albans Papanui Shirley Linwood Bishopdale Avonhead Hornby Halswell Redwood New Brighton
Contact

Ready to Start Your Renovation?

Tell us about the renovation or extension you've got planned and we'll come back with a straight price for the job as it actually is, not a guess. Call, message, or fill out the form below.

Monday to Saturday, 8:00am to 5:00pm. Closed Sunday. After-hours callouts available.

Get a Quote

Tell us what needs doing and we'll get back to you with a straight answer.