Architects and Home Designers in Castle Hill
Castle Hill families outgrow their homes long before they want to leave the suburb. dp Design Studio is a NSW registered architectural practice that helps Castle Hill homeowners rebuild, extend and reshape their properties, from a first sketch through council approval to construction.
We work on knockdown rebuilds, second-storey additions, major renovations, granny flats and custom family homes across the Hills District. Each design is shaped by your block, your council’s planning controls and the way your household actually lives.
Architectural Design for the Way Castle Hill Lives
Many Castle Hill homes sit on generous blocks, and that changes what is possible. A well-planned design can add a second storey, replace a tired house or turn a back yard into proper living space without giving up the garden.
The suburb has a mix of established brick homes, newer builds and properties that back onto bushland and reserves. Each type of site asks different questions about orientation, privacy, slope, drainage and approvals. We start with those questions, because the answers shape everything that follows.
Because our team handles architecture, interiors and construction coordination together, the decisions made at concept stage are the ones that get built. You deal with one team, one set of drawings and one point of contact from start to finish.
Speak With Us
Talk to Us About Your Castle Hill Home
Our studio is based in Parramatta, a short drive from Castle Hill, so site visits across the Hills District are part of how we work. Start with a short phone discussion to share your plans, then decide whether a site consultation makes sense.
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Complimentary Initial Phone Discussion A short call to understand your property, your goals and your rough timeframe.
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Phone 1300 373 374
Local Design Considerations
What Castle Hill Projects Usually Involve
Most Castle Hill projects fall into a few types, and each has its own design and approval challenges. Here is how we approach them.
Knockdown Rebuilds and Custom Family Homes
When an older house no longer suits the family, rebuilding on the same block can deliver more than a patchwork of extensions. We test the site for what it can carry, then design a home with the right room mix, outlook and storage for the long term.
Second-Storey Additions
Building up keeps your garden and often your street. The work is as much structural and planning as it is design, so we check the existing footings, walls and setbacks early to avoid surprises once drawings are lodged.
Sloping Blocks and Bush-Edge Sites
Falls across a block, retaining walls and drainage affect cost and layout. Properties near bushland or reserves may also face bushfire requirements that influence materials, openings and setbacks. We investigate these constraints before the design is locked in.
Pools, Alfresco Areas and Outdoor Living
Larger blocks make generous outdoor spaces possible. We plan pools, covered alfresco areas and gardens together with the house, so the outdoor space connects properly to the kitchen and living areas rather than being added later.
Granny Flats and Secondary Dwellings
A granny flat can house extended family or provide rental income. We assess whether your lot suits one, how it sits alongside the main house, and which approval pathway applies.
Approvals Through The Hills Shire Council
Castle Hill projects are assessed against The Hills Shire Council's planning controls. We prepare the documentation, advise whether a Development Application (DA) or Complying Development Certificate (CDC) is the better route, and coordinate the consultants your approval needs.
Our Architectural Design Services in
Castle Hill
SDA Interior Design & New Build
SIL Homes Designs
Additional Services
Apart from the design, documentation, and coordination of building approvals, we also organise the following:
Geotechnical reports.
Detailed specification.
Investigation of the site and viability studies.
Put together and arrange structural detail.
Complete documents for councils and other authorities for certifications.
Unauthorised construction approvals.
Building assessments.
Builders cost estimates.
3D models and photo montages.
Prepare initial designs in sketch form.
Arrange a certificate from an engineer.
Referrals and approvals for Sydney water “tap in.”
Inspect proposed site.
General building consulting.
Prepare drawings for development.
Shadow diagrams.
Arrange and execute surveys.
Provide plans of the proposed landscaping.
Document and design proposals for stormwater.
Supply plans in draft form for bathroom, kitchen, cabinetry and laundry fit-outs.
Emergency evacuation diagrams.
Compiling development and construction certificate applications.
Dilapidation reports.
Arrange BASIX reports.
Supply a report of effects on the environment.
Draw up a document detailing all finishes.
Project manage construction.
Your unique design is waiting to be created — on 1300 373 374 or fill in our contact form.
Why DP Design Studio
Why Choose DP Design Studio Near Castle Hill?
Choosing the right architects and interior designers can make all the difference to the success of your project.
Fully Licensed Architectural Practice
Work with a fully licensed architectural practice registered in New South Wales.
Architecture and Interior Design Under One Roof
Our integrated approach ensures every architectural and interior design decision works together to create a cohesive result.
Residential and Commercial Expertise
We deliver tailored solutions for homes, duplexes, commercial developments, medical centres and specialist accommodation.
Complete Project Support
From feasibility studies and planning approvals through to construction coordination, we remain involved throughout your project.
Client-Focused Design Process
Every design is customised to your property, lifestyle and budget. We never rely on generic templates.
Builder and Architectural Experience
As both designers and builders, we create practical designs that are realistic to construct and deliver exceptional long-term value.
Servicing Castle Hill and Sydney's Established Suburbs
Beyond Castle Hill itself, we design and deliver projects across the Hills District, including:
- Parramatta
- Castle Hill
- Box Hill
- Kellyville
- Dural
- Cherrybrook
- Pymble
- Wahroonga
- Turramurra
- Killara
- Lindfield
- Strathfield
- Burwood
- Concord
- Five Dock
- Ryde
- Epping
- Eastwood
- Lane Cove
- Hunters Hill
If your suburb isn't listed, contact our team to discuss your project.
Each project is shaped around your lifestyle, site and budget. By combining creative design with practical thinking, we create distinctive spaces that function beautifully and feel genuinely yours. Speak with us today about what may be possible.
Frequently Asked Questions
Do you handle knockdown rebuilds in Castle Hill?
Yes. We assess what your block can support, design the new home, prepare the approval documentation and can coordinate construction through Daylo Build or your own builder.
Can you add a second storey to my Castle Hill home?
Often, yes, but it depends on the existing structure, your lot and the planning controls that apply. We check these early and advise whether a DA or CDC is the right pathway.
Can you design for a sloping or bushfire-prone block?
Yes. We design around falls, drainage and retaining needs, and consider bushfire requirements where a property backs onto bushland or reserves.
Can dp Design Studio design and build my project?
Yes. Daylo Build Pty Ltd, our licensed construction arm, can build from approved documentation. You can also take our drawings to another builder.
Ready to Start Your Castle Hill Project?
Whether you are rebuilding, adding a second storey or planning a new home on a Hills District block, dp Design Studio can guide you from the first idea to the finished home.
Book a free phone consultation and we will tell you what is possible on your site.
Our Services
Architectural Designs
Contact Us
DP DESIGN STUDIO PTY LTD
PO BOX 3528, PARRAMATTA, NSW 2150, AUSTRALIA
p : 1300 373 374
e : admin@dpdesignstudio.com.au
w : www.dpdesignstudio.com.au




















