O&CO.
BUILDING DESIGN.
Hi, I'm Sarah — a Central Coast building designer who's probably rearranged your floor plan in my head before you've even finished describing it.
I specialise in alterations and additions for families who love their home but need it to work better. My thing is preserving the character of Central Coast cottages and mid-century homes while making them functional for modern family life.
You'll work directly with me from start to finish. No team, no handoffs — just someone who genuinely cares about making your house work for the way you actually live.
Alterations & additions for families who love their home but need it to work better
Solo practitioner — you work with me from start to finish
Specialty in alterations & additions that preserve character
Mum of two who understands family life (and chaos)
Alterations & Additions That Keep What You Love
Central Coast building designer specialising in renovations for families who want more space without losing their home's character. I rearrange floor plans, add bedrooms, improve flow — and preserve the weatherboard cottages and mid-century homes that make the Central Coast unique.
New builds | Renovations | Granny flats | Additions | Interiors
How I Work
Initial Chat — or site visit. We'll measure up, talk about how you live, and I'll sketch out some ideas on the spot.
Design & Documentation — Floor plans, elevations, 3D models. Everything developed to CCCLEP/CCCDCP requirements so council approvals run smoothly.
Council Approvals — DA, CDC, or CC applications. I handle the compliance side.
Construction Support — Documentation ready for builder quotes and site coordination.
From "It Doesn't Work" to "It's Perfect"
You love your home but it's not working — not enough bedrooms, awkward layout, wasted hallways, dark kitchen.
Most people think their only option is to knock down and rebuild. But Central Coast homes — especially cottages and mid-century brick — have good bones. They just need someone to look at the floor plan differently.
That's what I do. I sit down, work out how you actually use your space, and redesign it so it works for your family without erasing what makes it special.
Why Work With Me
✓ Solo practitioner — You work directly with me from start to finish, not a team
✓ Alterations & additions specialist — I love preserving Central Coast character homes
✓ Floor plan obsessive — Been rearranging spaces in my head since childhood
✓ Central Coast mum — I get family chaos, storage needs, and the school run
✓ Builder's daughter — Grew up on sites, lived in 16 houses before I was 21
✓ Interiors too — Colour, materials, styling — it's all part of the process
UNDERSTAND
I combine creative design thinking with deep knowledge of Central Coast planning.
DESIGN
See your home before it's built with 3D visualisations.
DELIVER
Beautiful, compliant homes perfectly suited to how you live.
Let's talk about your place. Initial consultations are $295 (60–90 mins on-site) — we'll measure up, go through what's working and what's not, and I'll sketch out some ideas on the spot. You'll get a tailored proposal, and the consultation fee is credited toward your design if you proceed.
OandCo Designs trading as O&Co Building Design
Sarah Vander Stok - Dip. Building Design
BDAA Associate Member
ISEE Summit 2025
Solo Practitioner | Personal Service
Guaranteed Specialist in Flood, Bushfire & Sloping Sites Central Coast NSW.