A basic room conversion (office, gym, studio) starts at $30,000–$50,000. A standard conversion with higher-spec insulation and finishing runs $50,000–$80,000. Adding a bathroom typically pushes it to $80,000–$110,000. A self-contained granny flat with kitchen, bathroom, separate entrance, and full consent sits at $110,000–$150,000+. The biggest variables are whether plumbing is included and whether building consent is required. Every quote we issue is itemised line by line. No allowances. No surprises.

A basic room conversion takes 4–6 weeks on site. A standard conversion runs 6–8 weeks. Adding a bathroom pushes it to 8–10 weeks. A fully consented self-contained granny flat takes 10–12 weeks on site, plus 8–16 weeks for the consent process before work starts. You'll get a detailed schedule during the planning phase so there are no surprises.

It depends on what you're converting it into. A basic conversion that doesn't change the building's structure or add a kitchen and bathroom often doesn't require consent. Adding plumbing, kitchen, bathroom, or converting to a self-contained dwelling typically does. The Small Stand-alone Dwellings Amendment Act 2025 changed the consent rules for certain small dwellings — read our complete garage conversion guide for the full regulatory picture. We confirm consent requirements during the initial consultation.

Yes — and it's the single biggest factor that determines whether the converted space is a 'room' or a 'dwelling'. Adding a kitchen and bathroom typically adds $30,000–$50,000 to the project because of new water supply, waste runs, ventilation, waterproofing, tiling, and joinery. It also typically triggers building consent. We handle all the plumbing, electrical, and structural detailing in-house.

Generally yes — but the value uplift depends on what the conversion becomes. A self-contained granny flat typically delivers the strongest value uplift because it adds rentable floor area or accommodates multi-generational living. A high-spec home office adds strong value in a market that's prioritising work-from-home capability. A basic rumpus or storage conversion adds less. Your real estate agent or registered valuer can give you a specific estimate for your property and area.

A garage conversion is a renovation that turns an existing garage into a usable interior space — could be anything from a home office to a self-contained dwelling. A granny flat is a specific use case where the conversion includes kitchen, bathroom, separate entrance, and full habitability — making it a self-contained minor dwelling. All granny flats from garages are conversions, but not all conversions are granny flats. The terms are sometimes used interchangeably, which is why we clarify the use case during the initial consultation.

Only if it's a self-contained dwelling with the right consents, meets Healthy Homes standards, and complies with the residential tenancy rules. A non-consented conversion or one that doesn't meet habitability standards can't be legally tenanted as a separate dwelling. We design granny flat conversions specifically for rental use where that's the brief — including the right consent path, insulation, ventilation, and Healthy Homes compliance baked in.

That's the design intent for most of our conversions — the space should feel like part of the home, not a converted garage. Floor levels matched to the main house (or stepped intentionally), insulation and double glazing to bring the comfort level up to standard, finishes matched or complementary to the existing interior, and internal access where the use case calls for it. The most common reason garage conversions feel 'off' is shortcuts on insulation, ventilation, and finish quality. We don't take those shortcuts.

Three options. 1) Remove it and frame in a new wall with windows and an entry door (most common for habitable conversions). 2) Retain it but frame and insulate a wall behind it for a 'reversible' conversion (less common, sometimes used for workshops or to preserve resale optionality). 3) Replace it with sliding doors or large glazing for indoor-outdoor flow (suits granny flat conversions opening to a patio). We discuss the right option for your use case during the design phase.

If you're converting your only garage, you'll need to think through where vehicles park long-term — driveway, on-street, or a new carport elsewhere on the property. For many central Auckland properties this is fine. For others — particularly properties on small sections without driveway parking, or where local rules limit on-street parking — it's a significant consideration. We assess parking and access during the initial consultation.

For a habitable space — yes. Building Code requirements for insulation (H1), ventilation (G4), and heating apply to any conversion that becomes a habitable room. For non-habitable spaces like workshops or storage, requirements are lower. For self-contained dwellings, Healthy Homes standards also apply if the space will be tenanted. We build every conversion to the relevant code standard for its intended use.

Yes, almost always. The garage is typically separated from the main living areas, so disruption to the household is minimal compared to an internal renovation. You'll have tradies on site, materials and equipment in the driveway, and noise during certain phases — but your kitchen, bathrooms, and bedrooms remain functional throughout the conversion.

The full Auckland region. Central Auckland (Ponsonby, Grey Lynn, Herne Bay, Mt Eden, Epsom, Remuera, Ellerslie, Parnell, Grafton). North Shore (Greenhithe, Albany, Glenfield, Forrest Hill, Takapuna, Devonport, Birkenhead). West Auckland (Henderson, Glen Eden, Titirangi, New Lynn, West Harbour). East Auckland (Glendowie, St Heliers, Mission Bay, Howick, Pakuranga). South Auckland (Manukau, Manurewa, Papakura, Wattle Downs, Papatoetoe). Our team's based at the Wairau Valley showroom and we work the full region every week.

Workmanship's warranted by Superior Renovations directly. Plumbing, electrical, and waterproofing carry separate trade warranties from the licensed contractors. Fittings, fixtures, appliances, and materials carry manufacturer warranties from the supplier. All warranty paperwork's handed over at the end in a single folder so you've got everything in one place. Ask for a copy of the warranty document during the planning phase if you want to see it earlier.

Check three things. Licensed trades — your plumber, electrician, and waterproofer must be Licensed Building Practitioners (these are restricted building work in NZ). Real reviews from completed conversions — not stock photos with no client name attached. A fixed quote with line-item detail — not an estimate with allowances that can blow out mid-build. Visit a showroom if you can. It tells you a lot about how the company runs day to day.