Project: New Home & Granny Flat Umina Beach, Central Coast

PJ Cook

4 hours ago

Umina Beach Dual Occupancy Project

This dual occupancy development was delivered for a local family in Umina Beach on the Central Coast of NSW and completed in two carefully planned stages.

Stage 1 – 2019
Construction of the 2-bedroom single-storey granny flat using our Ettalong Beach design.

Stage 2 – 2021
Demolition of the existing dwelling and construction of our popular Stockton 3-bedroom home design with a single-car garage.

Staging the project allowed the owners to maximise flexibility, manage cash flow and create long term value from their block.

Project Details

Location: Umina Beach, NSW
Council LGA: Central Coast Council
Project Type: Detached Granny Flat and New Home
Granny Flat Design: Ettalong Beach 2 Bedroom Granny Flat
New Home Design: The Stockton 3 Bedroom New Home
Completion:Completed in two stages, with the granny flat delivered in 2019, followed by the new 3-bedroom home in 2021.
Construction cost:The original build investment was $146,080 for the granny flat and $253,745 for the 3-bedroom home with a single garage, including GST and excluding landscaping.

Note, current indicative build pricing is approximately $285,000 for the 2-bedroom granny flat and $550,000 for the 3-bedroom home with single garage, including GST and excluding landscaping.

House Details

The Stockton – 3 Bedroom Coastal Home

The Stockton is one of our standard small open plan home designs, ideal for compact or narrow sites while still delivering generous living spaces.

Key Features:

Raked and square set ceilings in the living, dining and kitchen areas
1500mm wide hallway and entry with square set finish
Large kitchen with stone benchtops and a return breakfast bar
Quality 90cm kitchen appliances
Subway tiles in a herringbone pattern for the kitchen splashback
600 x 600mm floor tiles in the hallway, living, dining and kitchen areas
Modern downlights throughout, with ceiling fans in the bedrooms
6.0KW split system air conditioning

Bathrooms And Laundry:

Frameless shower panel with strip drain in the ensuite
Semi-frameless shower screen in the main bathroom
Free-standing bath and 1800mm vanity
Quality tapware and bathroom fixtures supplied by Reece Plumbing
Laundry with stone benchtops and ample storage

Bedrooms And Storage:

Mirrored wardrobe doors fully fitted out with internal joinery
Master bedroom featuring a James Hardie Hardie Groove Lining feature wall and walk in robe

Exterior Highlights:

Mixture of James Hardie Chamfer and Axon cladding
31 x 31 architraves creating crisp, clean edges
Split skillion gable roofline, achieving a striking coastal façade
Covered rear alfresco area
Single-car garage

The finished result is a modern coastal home that feels open, light-filled and perfectly suited to the relaxed Umina Beach lifestyle.

Granny Flat Details

The Ettalong Beach – 2 Bedroom Granny Flat

Completed in 2019, the 2-bedroom single-storey granny flat was designed to complement the primary residence while maintaining privacy and functionality.

As part of a dual occupancy arrangement, the granny flat offers flexibility for:

Extended family accommodation
Downsizing on the same block
Additional rental income
Future lifestyle adaptability

Why Dual Occupancy Makes Sense

Dual occupancy developments and well-designed small homes continue to grow in popularity across the Central Coast.

While going smaller can feel like a big change, the benefits are substantial:

Better lifestyle with less maintenance
Reduced ongoing upkeep
Lower financial pressure
Potential rental income
Greater flexibility for growing or changing families
More time for leisure and family life

This Umina Beach project is a strong example of how staged development, thoughtful design and quality finishes can deliver both lifestyle and long-term value.

If you are considering building a granny flat, new home or dual occupancy development on the Central Coast, contact our team, who will guide you through the entire process from concept to completion.

P J Cook Building – Building Your Future.

Testimonials

Karenne Jurd

We have recently completed a lovely build with PJCook and we couldn’t be happier – Peter and his whole team are a pleasure to work with. They consistently had an eye to the detail, levering off their successful experience, to improve the delivery for our construction – whether it was site management, finish details, materials pallets, or subcontractor management. Any issues that arose were addressed in a timely, respectful way. We now have two lovely homes (a 2 bedroom and a 3 bedroom), after subdividing a residential block, occupied by happy families. What could be better!
Roger Boyd

PJ Cook Pty Ltd built our Granny Flat and we cannot recommend Peter and the team highly enough. Open and honest communication, an amazingly high quality finish, on time and on budget! A truly simple process and a great investment for the future. We are very happy! Thank you Peter.
Chandan Arun

We had a Granny Flat built py P J Cook Building. We found the whole process transparent. Peter and his team were always available to answer any questions along the way. The building was completed on schedule without and problems . The build quality is excellent with no defects identified. Even our Real Estate agents were impressed with the quality. We can recommend PJ Cook to anyone who is after a quality built dwelling.
Chiara B

PJC built out granny flat in Charmhaven. From the beginning Peter and his team were helpful, quick to respond and very professional. We are so happy with the end product and the whole experience. Highly recommend!
George Chinn

Absolute professionals, PJ Cook, is so easy to deal with, wonderful team lead by Peter. No hassle building, we have a beautiful 2 bedroom granny flat, above our expectation, the finish is spotless, and all communication was quickly answered. We made a great decision going with P J Cook.
Julie Oldham

Peter Cook Building company have given me a beautiful place to call home. Throughout the whole experience, Peter and his contractors showed their dedication to give me a beautiful final product. I found Peter to be a man of integrity, always communicating with me to check in with regular updates throughout the build. I highly recommend Peter Cook, if you are thinking about building a granny flat. He will help you to have your dream home. Many thanks Peter.
Elize Smit

We are very happy with our 2 bedroom backyard granny flat from PJ Cook. The built started just when Covid restrictions happened so we were a bit apprehensive but there was no delay. What a professional team – from the planning phase to the finished product. This was a bit of a tricky built because we have a battle axe property but it didn’t seem to be a problem for Peter and his team. The granny flat solved our problem of a growing family and also is a really good investment down the track.
Robert Cogswell

P. J. Cook Building. Built a 2 bed Granny Flat in our backyard at Chain Valley Bay. The project finished on time and without any additional expenses This was extraordinary considering the pandemic. My Wife and I are extremely happy with the finished product. The builders eye for detail is second to none. I wouldn’t hesitate to use this company again. This is one of the best investments we have made. To sum up the experience. Trust, Perfection, Value and Reliability.
Julie Bramall

Thank you to the Team at PJ Cook Building for the build of our Granny Flat on our investment property. Peter was quick to respond to any questions that we had. Once the project got started, it was very quick to completion, especially over the Covid19 period. There were a few hurdles along the way, which had nothing to do with PJ Cook but Peter made this much easier to deal with and we are very appreciative to him.
The finish product of our Granny Flat is impeccable. Peter’s eye for detail is impressive, which has resulted in the most beautiful Granny Flat (inside and out) that I have ever seen. We were able to secure a tenant only 2 days after advertising and for a very impressive return.
Thanks to all the Team at PJ Cook Building and especially Peter. We would not use any other builder if and when we decide to build another.
Jo Minter

I am so very happy with my Granny Flat built by PJ Cook in Woodberry. The whole team onsite were courteous and professional at all times. The quality of my build is impressive. It took me over a year of looking at other builders before settling with PJ Cook. The only disappointment is that the slide out range hood was unobtainable, so I settled for a fixed one. I am sure I can live with that. Absolutely no hesitation to recommend them to anyone looking at building a granny flat. Handover is tomorrow. I am one very excited and happy customer. Jo
Mark Brogan

“Peter and team are first class”.

From the initial quote, communications, build to completion – it was perfect! From the initial quote the team were on time, respectful and even set out the build with pegs for a visual! The build started and was well underway seemingly in an instant.

The quality was exceptional with a true value for money. Peter and the team put in the effort and focus on the detail. The team went above and beyond with the authorities for approvals and complexities with service connections!

We could not be happier with the outcome and credit to the team. With our first baby on the way, the wife and I couldn’t be happier with our stress free build. We will be recommending PJ Cook to our friends and if the future allows, going again with the team!
Tanya Watson

We employed PJ Cook in 2016 to put in a 2 bed granny flat for us.

Peter was extremely professional from the start. Great communication all the way and has certainly been the best thing we ever did to generate a great investment income!

I named our granny flat “Happy Cottage Woy Woy” as it is holiday accommodation and it makes people feel happy.

I would highly recommend PJ Cook builders
Sturt Family

We presented Peter and his team with a small and challenging backyard to construct a custom-made granny flat. Today we have a first-class construction with quality apparent throughout. We recommend you contact P J Cook Building to discuss your needs.