Why Choose Us

Why Choose Us - InHouse Granny Flat Builder?

At InHouse Granny Flats, we know that competitor companies are unique in their own ways.

Our company is built on reputation and as we like to say, “we’re not better, we’re different”.

One of our most popular qualities is the opportunity for you to speak directly to a granny flat builder.

No other company has an on call builder who will deal with you throughout the whole process.

From the moment you request a quotation right until the final handover, our expert builder will answer any questions you may have as well as offer you professional advice.

No delegating calls or jobs, you want an expert, you’ll get an expert.

Another favorite quality is our custom design process, which allows every client the opportunity to design their own granny flat layout with the guided help of our builders and architect.

Here are some ways that make Sydney based, InHouse Granny Flats stand out above the rest :


(Standard inclusions)
(Standard inclusions)
  Granny flat design Our designs are custom designed and built on site, not pre-fabicated or flat packed. Standard or pre-fabricated designs/flatpacked
Showroom/Walk ins No appointment required.
State of the art showroom with knowledgeable staff to walk you through.
Need an appointment. Only open a few days a week.
Deposit $2,000 Over $6,000
2 bedroom granny flat size 60sqm Below or up to 60sqm
Granny Flat Builder On call 24/7 By appointment only
Building Designer Available 5 days a week By appointment only
Floor structure Concrete piers under concrete slab No piers included
Floor Coverings Choice of tiles, laminate flooring or carpet at same price Laminate or carpet only
Paint Your choice from our large selection Set colours only
Bathroom Wall Tiling Wall tiling to 1.2m and 2.1m in shower Skirting tiles only
Bathroom extras Framed shower screen, showerhead and mixer Shower screen only
Separate meters Separate gas & electrical meters/water flow readers are included as standard Separate meters are an additional cost
Kitchen Size Custom designed to suit your needs Standard designs that cannot be altered
Hot Water System LPG gas bottles/connection to natural gas Electrical Heat Pump or LPG gas bottles only
Range Hood Ducted to outside Ducted to roof cavity only
IXL light in bathroom Ducted to outside Ducted to roof cavity only
Exterior Cladding or Bricks Brick or hardie board only
Pest Control Permanent termite matting installed Temporary chemical spray
Roof Tiles or Colorbond Steel Colorbond steel only
Internal Sarking Yes Not all
Rainwater Tank Included if required by BASIX Extra cost if required by BASIX
Garden External tap Not included
Service connections + underground trenching Up to 20 lineal metres included in our price Up to 5 lineal metres only
Electrical 11 double power points 9 double power points

Granny Flat Information Night