---
title: "Lisa Nguyen | Duplexcost Expert Author"
description: "Read the profile of Lisa Nguyen, Planning & Approvals Specialist at Duplexcost. View credentials and published landscaping guides."
source: DuplexCost
sourceUrl: https://duplexcost.com/authors/lisa-nguyen/
lastUpdated: 2026-07-01
citationUrl: https://duplexcost.com/authors/lisa-nguyen/
---

# Lisa Nguyen

Read the profile of Lisa Nguyen, Planning & Approvals Specialist at Duplexcost. View credentials and published landscaping guides.

Planning & Approvals Specialist

Authors regulatory guides covering all 8 Australian states. Maintains state-by-state approval pathway database for the GrannyFlatCost calculator.

Guided 300+ homeowners through CDC and DA processes. Specialised in secondary dwelling approvals with 94% first-submission approval rate.

© 2026 DuplexCost. A Hustle Ventures product.

## About

## Professional Experience

## Key Achievements

## Publications

## Articles by Lisa Nguyen

#### Guides

#### Company

## Key Points

- Maintained 94% first-submission approval rate across 300+ secondary dwelling applications
- Contributed to PIA NSW submission on proposed SEPP (Housing) 2021 amendments
- Navigating CDC Pathways for Secondary Dwellings in NSW Planning Institute of Australia Newsletter, 2022
- CDC Duplex Requirements NSW: Low Rise Housing Diversity Code & Zoning Guide Can you build a duplex on your block? Learn the exact NSW CDC requirements, frontage rules, minimum lot sizes, and council zoning constraints. 2026-06-18
- Cost to Build a Duplex
- CDC Duplex Requirements
- Best Sydney Builders
- Best Melbourne Builders
- Calculator
- Locations

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*Source: [DuplexCost](https://duplexcost.com/authors/lisa-nguyen/)*