Granny Flats Central Coast & Newcastle
Aesthetically clean, modern open-plan designs from your trusted granny flat builder for granny flats Central Coast & Newcastle, featuring the highest quality finishes.
At P J Cook Building, we are proud to be one of the leading builders of granny flats on the Central Coast, Hunter Valley and Newcastle. With over 13 years of experience specialising in the design, approval, and construction of granny flats, we have completed thousands of successful projects across the Central Coast and Newcastle regions. Our expert team is committed to delivering modern, spacious Granny Flat designs with top-quality finishes that enhance homes and properties throughout the local community.
Adding a granny flat is a smart way to meet the needs of a growing family or generate extra income. Whether you’re looking to create space for loved ones or gain rental revenue, a granny flat offers flexibility and value. Trust the Central Coast’s Granny Flat experts to bring your vision to life with a focus on craftsmanship and quality. Let us help you add value and versatility to your property!
Check out our range of granny flat designs!
Contact P J Cook today to discuss options for adding a Granny Flat to your property in the Central Coast, Lake Macquarie, Newcastle or Hunter Valley regions.
P J Cook Building – Boutique Builders Specialising in Standard & Custom Built Granny Flats Central Coast and Newcastle. Our Focus is Producing Quality Built Dwellings & Providing Exceptional Service. Building Central Coast Wide.
- Avoca Beach
- Bateau Bay
- Bensville
- Berkeley Vale
- Blackwall
- Blue Bay
- Blue Haven
- Budgewoi
- Buff Point
- Calga
- Chain Valley Bay
- Charmhaven
- Chittaway Bay
- Copacabana
- Davistown
- Doyalson
- East Gosford
- Empire Bay
- Erina
- Erina Heights
- Ettalong Beach
- Forresters Beach
- Fountaindale
- Gorokan
- Gosford
- Green Point
- Gwandalan
- Halekulani
- Hamlyn Terrace
- Jilliby
- Kangy Angy
- Kanwal
- Kariong
- Killarney Vale
- Kincumber
- Kingfisher Shores
- Koolewong
- Lake Haven
- Lake Munmorah
- Lisarow
- Long Jetty
- MacMasters Beach
- Magenta
- Mangrove Mountain
- Mannering Park
- Mardi
- Matcham
- Mount Elliot
- Mount White
- Narara
- Niagara Park
- Norah Head
- Noraville
- North Avoca
- North Gosford
- Ourimbah
- Palmdale
- Pearl Beach
- Peats Ridge
- Point Clare
- Pretty Beach
- San Remo
- Saratoga
- Shelly Beach
- Somersby
- Springfield
- Adamstown
- Adamstown Heights
- Bar Beach
- Beresfield
- Birmingham Gardens
- Black Hill
- Broadmeadow
- Callaghan
- Carrington
- Cooks Hill
- Elermore Vale
- Fletcher
- Fullerton Cove
- Georgetown
- Hamilton
- Hamilton East
- Hamilton North
- Hamilton South
- Hexham
- Islington
- Jesmond
- Kooragang
- Kotara
- Lambton
- Lenaghan
- Maryland
- Maryville
- Mayfield
- Mayfield East
- Mayfield North
- Mayfield West
- Merewether
- Merewether Heights
- Minmi
- New Lambton
- New Lambton Heights
- Newcastle
- Newcastle East
- Newcastle West
- North Lambton
- Rankin Park
- Sandgate
- Shortland
- Stockton
- Tarro
- The Hill
- The Junction
- Tighes Hill
- Wallsend
- Warabrook
- Waratah
- Waratah West
- Wickham
- Broke
- Cessnock
- Greta
- Hermitage
- Kurri Kurri
- Lovedale
- Maitland
- Muswellbrook
- Pokolbin
- Rutherford
- Weston
- Wollombi
Our focus is on building your project on time, within budget, and with no surprises once the building contracts are signed. Everything is completed to a superior P J Cook standard; our commitment to perfection ensures nothing is left to chance.
Newcastle & Central Coast Granny Flats Frequently Asked Questions
Whatever the project, P J Cook Building encourages you to ask questions and expect answers.
Our granny flats are built to full turn-key completion, meaning they are move-in ready as soon as construction is complete. This makes it easier for families to quickly accommodate loved ones or for investors to get their rental to market faster and start generating a return.
We pride ourselves on offering market-leading inclusions that set a new standard beyond the modest offerings of our competitors. With a huge and flexible range of features and services included as standard—at no extra cost—you can trust that your granny flat will be both functional and stylish.
Our inclusions cover every stage of the process, from the pre-construction stage, including design and Complying Development Certificate approvals, to the construction stage, where we deliver high-quality finishes and fixtures. To see everything included, check out our complete list of general inclusions.
Yes, P J Cook Building offers in-house design services. Our skilled design team works closely with clients to create customised architectural plans tailored to their specific needs and preferences. By providing in-house design, we ensure a seamless process from concept to completion, maintaining high-quality standards and adherence to local regulations. Whether you’re looking for a custom home, granny flat, or duplex our in-house design services can bring your vision to life.
Yes, P J Cook Building can build to your architectural plans. We collaborate closely with clients to ensure that their vision is realised precisely as intended. Our experienced team can work with existing architectural designs to bring your project to life, ensuring that all construction meets high-quality standards and local regulations. Whether it’s a custom home, granny flat, or duplex, we provide the expertise needed to execute your plans accurately.
Yes, P J Cook Building offers a variety of attached home and granny flat designs that integrate seamlessly with your existing home. These designs provide additional living space while maintaining the aesthetic and functional cohesion of your property. Our attached granny flats are ideal for accommodating family members, generating rental income, or creating a private guest suite. Each design is tailored to meet your specific needs and complies with all local building regulations.
Yes, P J Cook Building specialises in constructing 2 storey granny flats. These designs provide additional living space and flexibility, making them ideal for accommodating extended family or generating rental income. Our team ensures that each two-storey granny flat is built to high standards, complying with all local building regulations. We work closely with clients to create custom designs that meet their specific needs and preferences.
No, P J Cook Building does not build mobile or flat pack granny flats. Our focus is on constructing high-quality, custom-designed granny flats that are built on-site. This approach ensures the highest standards of durability and compliance with local building regulations. Each granny flat is tailored to meet our client’s specific needs and preferences, providing a permanent and robust living solution.
Yes, P J Cook Building specialises in constructing eco-friendly granny flats. We incorporate sustainable building practices and materials to create energy-efficient and environmentally responsible living spaces. Features may include solar power systems, rainwater harvesting, high-performance insulation, and energy-efficient appliances. Our team is committed to reducing environmental impact while providing comfortable and modern living solutions.
Yes, P J Cook Building constructs self-contained granny flats. These fully functional living spaces include essential amenities such as a kitchen, bathroom, living area, and bedroom, making them ideal for extended family living, rental income, or guest accommodation.
The general requirements for a suitable block to build a granny flat in the Central Coast, Newcastle and Hunter Valley regions are:
- Maximum floor area 60m2
- Blocks 450m2 or greater
- Land zoned residential
- 3m rear set back from property boundary (for blocks 900m2 & under)
Read our guides on Central Coast Granny Flats and Newcastle Granny Flats.
Yes! The government is encouraging the construction of granny flats in most areas via Complying Development Applications.
Thanks to updates to the NSW Affordable Housing State Environmental Planning Policy, residential homeowners across NSW can now build a granny flat on their property without needing traditional council approval. As long as certain site and design requirements are met, the process is streamlined for compliance. This applies to properties within Central Coast Council, Lake Macquarie City Council, Newcastle City Council and other local government areas.
Under Complying Development, approvals can be obtained as quickly as ten working days (if your property meets the criteria for Complying Development).
In most cases, yes. However, purchasing an up-to-date Section 149 (versions 2 & 5) Planning Certificate from your local council is best. This will confirm whether or not there are any specific restrictions on your block that may prevent you from building a granny flat.
P J Cook Building can also happily arrange for a Section 149 (versions 2 & 5) on your behalf for a fee of only $133.
No, there are no fees for the first site inspection. Call P J Cook Building to arrange a time, and we will meet you on-site to examine your block’s suitability and complete a site measure of your chosen design, all free of charge. During the inspection, we will discuss:
- Which of our standard designs best suits your site
- Your lifestyle requirements
- Your wish list
- Budget and feasibility
- Land and slope
- Solar orientation
- Views
- Privacy
- Site Restrictions
A comprehensive site inspection lets us understand your block before providing a detailed tender. We also offer remote site assessments if necessary; however, we prefer to meet on-site in person. This ensures we fully understand your block and you know who you are dealing with before entering into any agreements.
No. Our design team can customise one of our standard Granny Flat designs to suit your requirements and budget.
Alternatively, you can choose from our large range of standard, 1-bedroom–, 2-bedroom, and 3-bedroom designs. We have a large variety of designs, so you are destined to find a suitable design that works for you, your budget and your backyard. If you can’t find a design, we can work off architectural plans or custom-design a Granny Flat for you!
A Central Coast granny flat typically takes 15 to 18 weeks to build after the design and approvals process is complete and the slab is poured. The design and selection stage can take several months, depending on the level of customisation required. Additionally, council requirements and approvals can extend the timeline. However, with P J Cook Building’s range of compliant designs, the lengthy council approval process can often be bypassed, saving time.
As one of the Central Coast’s leading granny flat builders, P J Cook Building prides itself on supporting local trades and suppliers, which has helped us avoid many delays impacting the construction industry. We provide transparent advice on timeframes and work hard to meet client expectations.
Yes, you can build a Granny Flat on a battle axe block. The laneway to your property must be at least 3m wide, and the dimensions of your lot (excluding the area for the laneway) must be at least 12m x 12m.
In NSW, granny flat regulations allow a maximum internal floor area of 60m², excluding verandahs, decks, patios, porches, or garages. However, the total allowable floor area may vary based on local council restrictions. On the Central Coast, we have successfully built three-bedroom and even two-storey granny flats that comply with specific council guidelines, showcasing the flexibility available within the regulations.
Yes, we do. Most granny flats and homes are constructed on a slab on the ground, as it is a cost-effective, durable, and efficient foundation option for many sites. However, there are situations where this may not be the most suitable choice.
If your property is located in a flood-affected area, has poor soil conditions, or has a sloping block, we may recommend building on piers instead of a traditional slab. Piers provide additional elevation to protect the structure from potential water damage, allow better drainage, or accommodate uneven land contours.
Our experienced team will assess your site conditions during the planning phase and recommend the best foundation option to ensure your build is stable, safe, and compliant with all relevant building regulations.
Yes, you can choose brick veneer as an exterior finish for your granny flat. It’s a durable and attractive option that complements many home styles while offering benefits like improved insulation and soundproofing.
Keep in mind that brick veneer typically comes at an additional cost and will reduce the interior floor space by approximately 3–4 square metres, as the total area is measured from the building’s exterior. Despite this, it’s a great choice for those seeking a classic, cohesive look that adds value to their property.
Our team is here to help you decide if brick veneer is the right option based on your budget, design preferences, and site requirements.
No, but ideally, you could send us the following documents so that we can confidently provide you with the correct information & design ideas.
- An up-to-date Section 149 planning certificate [versions 2 & 5] or the full copy of the purchase of sale & any other relevant information.
- Contour survey to AHD level.
- Any council existing sewer diagrams or any other relevant information.
Yes. We have a large range of external 3D facades & materials to choose from.
All appliances come with a manufacturer’s 24-month warranty. There is a 6-year structural warranty following our maintenance period, which is 13 weeks/upon practical completion. Bathroom and laundry items come with a Reece Plumbing manufacturer 12-month warranty, and the Hot Water System comes with a Reece Plumbing manufacturer 10-year warranty.
Contact Central Coast’s #1 Granny Flat Builders
Honesty, integrity, reliability and customer service form the foundation of our company’s success.
Living in and being located on the Central Coast, we know our region intimately and never avoid a complex site. We have experience building in bushfire-prone areas, sloping sites and rock-based sites. Our extensive range of standard designs can be easily customised to suit all budgets and requirements.
Our vision is to ensure your desired results are achieved.
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Download our full range of Newcastle and Central Coast granny flat designs, floorplans and inclusions
Explore various options that fit your needs. Our guide includes detailed floorplans for 1, 2, 3-bedroom and double storey granny flats, complete with dimensions and measurements for each layout. You’ll also find a comprehensive overview of design features and details, as well as a variety of facade options to personalise your project along with our Investor Inclusions guide. Whether you’re looking for a modern or classic design, this guide provides everything you need to start planning your perfect granny flat.
TESTIMONIALS
We believe word-of-mouth is the best form of advertising. We understand that when our customers’ experience exceeds expectations, we are generally awarded business from family and friends. Our customer opinions mean a lot to us. A referral is the ultimate compliment that our business can receive. This also means that we can invest less time and money in advertising and more in developing and improving the building experience for our customers.
Here are just a few reviews from clients who chose to partner with P J Cook Building:
POTENTIAL INVESTMENT RETURNS FOR GRANNY FLATS CENTRAL COAST
DID YOU KNOW GRANNY FLATS CAN RETURN 10- 20% ON INVESTMENT?
Financial Benefits of Building a Granny Flat
Granny flats are no longer just for grannies—they’re a smart investment opportunity for homeowners and property investors alike. Renting out a high-quality P J Cook Building granny flat can provide a consistent income stream, making it an excellent choice for improving your property’s value and financial potential.
Granny flats have become one of the top choices for property investors on the Central Coast and Newcastle region.
For example, take John, a savvy investor who lives in a four-bedroom home on a 680 square metre block in Ettalong Beach on the Central Coast with a large backyard with space he does not use but has to maintain.
John adds a 2 bedroom granny flat. He spends a total of $195,000.00, which includes design, approvals, and all our standard lifestyle inclusions, and is ready to move in. As this property is in Ettalong Beach, close to a lovely beach and plenty of shops, John can rent the two-bedroom Granny Flat for $500 per week.
Under this scenario, the granny flat generates an annual return of around 12-13%. John can pay off the cost of his investment in approximately 8.5 years, after which he will enjoy an income stream of almost $23,000 per annum.
Of course, this is just one example; you must consider your circumstances. For example, you might need to borrow money to fund the granny flat investment in your property. You might need to budget for landscaping, fencing, section 94 council contributions, etc. Other expenses will mean it takes longer for your investment to generate positive cash flow.
There’s a reason why P J Cook Building is your #1 choice for a Granny Flat on the Central Coast.
At P J Cook Building, quality is our passion and defining feature. Over the years, Peter has carefully assembled a team of employees and subcontractors who share his commitment to excellence. Our focus is on delivering superior craftsmanship, not chasing volume. We only work with contractors and staff who value open communication, embrace constructive feedback, and are dedicated to ongoing improvement. This ensures every project we undertake, especially our granny flats on the Central Coast, meets our unmatched standards.
We specialise exclusively in new residential builds, including granny flats on the Central Coast, bringing extensive expertise to every project. Whether it involves challenging sites like bushfire-prone, flood-prone, sloping, or rock-based areas, our experience ensures no site is too difficult for us to manage.
Cutting corners is never an option for us. Our rigorous quality standards ensure every granny flat on the Central Coast is crafted to the highest level of workmanship. While our pricing may be higher than competitors, it reflects the time, care, and expertise we invest to deliver exceptional results that stand the test of time.
We understand that building a granny flat requires attention to detail and patience. That’s why we prioritise meticulous work over rushing to meet deadlines. This approach not only ensures superior outcomes but also saves you time, money, and potential issues in the long run. Our standard inclusions exceed industry norms, giving you confidence that your Central Coast granny flat is built with excellence as the priority.
When choosing a granny flat builder, it’s vital to look beyond quick promises or low prices – quality should always come first. With P J Cook Building, you’re partnering with a team dedicated to superior craftsmanship and customer satisfaction. Rest assured, you’re making the right choice for a smooth, rewarding building journey and a finished product that exceeds expectations.
If you’re considering building granny flats on the Central Coast, trust P J Cook Building to deliver the perfect combination of quality, experience, and craftsmanship.
Useful Granny Flat Articles
Granny Flat Project: Erina, Central Coast
This 1-bedroom granny flat in Erina, based on our Branxton floor plan, was designed to provide independence and comfort for our client’s mother. Situated on busy The Entrance Rd, the project faced logistical challenges with traffic control, steep terrain, and bushfire BAL 29 compliance. Despite the complexities, the result is a modern, functional space that brings family closer together while meeting all standards.
Custom Granny Flat Project: Green Point, Central Coast
We recently demolished a garage and built a new Garage and Granny Flat for some homeowners in Woy Woy on The Central Coast. The purpose of this build was to provide the owner with a new garage and granny flat at the rear for family, friends or Airbnb. View the project details here.
Granny Flat Project: Wadalba, Central Coast
Two-Bedroom Granny Flat Investment Project: Kuttabul Rd, Wadalba, NSW This two-bedroom granny flat, located in Wadalba on the Central Coast, was built for local investors aiming to create a dual rental income on their property, where they reside in the main house. We used our popular Woy Woy 2-bedroom floor plan, designed for both functionality and comfort. The build [...]
Granny Flat Project: Aberdare, Hunter Valley
Two-Bedroom Granny Flat Investment Project: Greta St, Aberdare, in the Hunter Valley, NSW We recently completed this 2-bedroom Granny Flat for a couple of local investors in Aberdare, located within the Cessnock Council. The goal of the project was to create a dual rental income opportunity on the property. The design was based on our Lisarow standard internal floor plan, [...]
