01 
Free Site Visit & Quote
We come to your property, walk the site with you, and tell you what's actually possible. You leave with a fixed-fee quote and a clear path forward. No charge.
Sydney · Residential approvals
From concept to council approval — without the runaround.
Nemco Design is Sydney's one-stop shop for residential design, structural engineering and DA/CDC approvals. One team, one fee, one phone call. 100% approval rate over 10 years.
Free 30-minute site visit. No obligation. We’ll tell you what’s possible on your block before you spend a cent on plans.
- 100% council approval rate
- 10+ years in Sydney
- Design + engineering + approval, in-house
- Fixed-fee quotes
What are you planning?
Three different journeys, three different next steps. Pick the one that sounds like you.
01 Build on my land
I own a block and I want to build on it.
Granny flat, duplex, knockdown rebuild, or a major reno. You're the homeowner, this is for the long term.
See how it works for homeowners
02 Develop for income
I'm developing for yield or resale.
Investor, small developer, or homeowner adding income. You want feasibility numbers, fast turnaround, and a clear path to CC.
Show me the numbers
03 Pre-purchase advice
I'm assessing a property before I buy.
Cooling-off period, considering an offer, or need a structural inspection before you commit.
Get same-week help The runaround
Most Sydney builds get stuck in council. Yours doesn't have to.
You've already pictured it — the new home, the granny flat in the back, the duplex that pays itself off. Then reality hits. One consultant says you need a DA. Another says you don't. The certifier wants something the engineer didn't know about. Six months later you're still waiting on a stamp, and your build budget is bleeding interest.
That's not your fault. It's what happens when four different people are responsible for one outcome.
We do it differently. Design, structural engineering, drafting, hydraulics and approvals all sit under one roof at Nemco. One team owns the project from your first idea to the day council signs off. That’s why we have a 100% approval rate.
One team. One fee. One phone call.
What we design, engineer and get approved.
Six core services, all delivered by the same team in the same office. No sub-consultants, no waiting.
Granny Flat Design & Approval
CDC-ready in 21 days. Fixed fee from concept to certificate.
Learn more
Duplex & Dual Occupancy
DA-approved duplexes that maximise your block's yield.
Learn more
Knockdown Rebuild
New home design with engineering and council approval included.
Learn more
Pool Design & Approval
Pool plans, certification and BCA-compliant fencing — done together.
Learn more
Stormwater & Hydraulic Design
Council-compliant drainage that won't get your project red-flagged.
Learn more
Structural Engineering Reports
For pre-purchase, council requests, insurance and renovations.
Learn moreFour steps. One team. Zero runaround.
02 
Detailed Site Survey
Our team measures your site to the millimetre so the design is 100% accurate from day one. No nasty surprises during construction.
03 
Design & Engineering, In-House
Architectural plans, structural engineering, hydraulics, certification — all drawn under one roof. No waiting six weeks for a sub-consultant to email back.
04 
Council & Certifier Liaison
We deal with council and the private certifier on your behalf. We've worked with most Sydney councils for over a decade. That's why our approval rate is 100%.
Why Sydney homeowners and developers choose Nemco.
01
One-stop shop
Architects, engineers, drafters, hydraulics and certification specialists — all in one office. You hire one team, not four.
02
100% council approval rate
Across 2,000+ projects in 10+ years. We know what each Sydney council will and won't accept before we put pen to paper.
03
Fixed-fee quotes
You know exactly what you're paying before we start. No hourly creep. No “we hit a snag” invoices.
04
In-house specialists
Architects, structural engineers, hydraulic engineers, drafters and certifier liaisons — all employed by Nemco, all in the same office. You're never waiting on an external sub-consultant.
05
Sydney-specialised
Bankstown-based, servicing every Sydney metro council. We know the local DCPs, LEPs and certifier panels inside out.
Recently delivered.
From slab pour to handover, captured from the air.
Drone walkthroughs of recent Nemco projects mid-construction. Approval is only half the job — these are the builds we keep an eye on after the council stamp lands.
What our clients say after the certificate lands.
Real Sydney homeowners and developers, in their own words.
Nemco took our granny flat from a sketch on a napkin to a CDC certificate in under a month. Every other firm we'd spoken to wanted a four-month design phase first. Honest, fast, and they answer the phone.
Mario Nowfal Granny flat · Greenacre
I'd been burned by a previous architect on a duplex DA that got knocked back twice. Nemco redrew it, talked us through what council actually wanted, and got it through first try. Fixed fee, no surprises.
Rauf Iqbal Duplex · Punchbowl
We knocked down our family home of 30 years and rebuilt. Nemco handled the demolition application, design, engineering, and council — we didn't have to chase a single sub-consultant. That alone was worth the fee.
Patrick Sioud Knockdown rebuild · Padstow
Plain English from the first call. They told me upfront which path was cheaper, what council would push back on, and what to skip. Saved me thousands on a renovation that other firms had quoted blind.
Chris K. Renovation · Bankstown
Three free tools. Pick the one that fits.
90 sec For homeowners planning a build
DA vs CDC Checker
Tells you which approval pathway your project needs and roughly how long it'll take.
Start the DA vs CDC Checker
60 sec For investors and developers
Duplex Feasibility Calculator
Estimates max buildable area, indicative yield, and DA vs CDC pathway for your block.
Run the Feasibility Calculator
2 min For buyers in cooling-off
Pre-Purchase Inspection Booking
Books a registered structural engineer for a same-week property inspection.
Book a Pre-Purchase InspectionFree, no obligation. Built by a team with 10+ years of Sydney council experience. No email needed to see your initial result.
Questions Sydney homeowners always ask.
How long does a DA take in Sydney?
For straightforward residential work, 6–12 weeks once lodged. We design knowing what each council needs to avoid the back-and-forth that pushes that to 4–6 months.
Do I need a DA or a CDC?
A CDC (Complying Development Certificate) is faster — often approved in 21 days — but only available if your project meets specific rules. A DA (Development Application) goes to council and takes longer but covers anything outside the rules. Our free DA vs CDC checker tells you which one in 90 seconds.
How much does it cost to get a granny flat, duplex or knockdown rebuild approved?
Design + engineering + approval typically ranges from a few thousand to tens of thousands depending on size and complexity. We give you a fixed quote at the free site visit so there are no surprises.
Do you handle the certifier and council, or do I?
We do. Lodging, responding to RFIs, organising private certification — all included in our fixed fee.
What if council rejects my design?
We've never had one rejected. If we ever did, we'd redesign and re-lodge at no cost — that's the upside of having engineering, design and certification on one team.
Do you work in my council area?
We service every Sydney metro council and most surrounding LGAs. Tell us your suburb at the site visit and we'll confirm.
Still have a question? Call us 1300 868 072
Start here
Get a free site visit this week.
A 30-minute walk-through with one of our designers. No charge, no obligation. You'll leave knowing exactly what's possible on your block, what it'll cost, and how long it'll take.
Sydney metro only. Site visits typically available within 5 business days.