WA development impact specialists
Independent economic and planning impact assessments for residential, industrial, commercial and mixed-use developments across Western Australia.
Understand your project's potential through data-driven insights that support better development decisions.

SUBDIVISION &
BUILDING
DEVELOPMENT
ASSESSMENTS
REFLECTING
LOCAL &
REGIONAL
CONDITIONS
MODELLING
TAILORED
TO EACH
DEVELOPMENT
ASSESSMENTS
FOR
DEVELOPMENTS
OF ALL SCALES
Every development affects the economy and planning outcomes.
Impexa provides evidence-based impact assessments for development projects across metropolitan and regional WA. Our integrated approach combines economic modelling with practical planning expertise to inform due diligence, planning proposals and investment decisions.
We help you demonstrate your development's broader impact.
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Illustrative figures only
Economic and planning outcomes are assessed cross each successive stage of development.

Assess development potential, land use, development yields and alignment with relevant planning policies and objectives.

Estimate land development and infrastructure investment, construction employment and associated economic contributions.

Assess building investment, construction employment and development outcomes, including housing, floor space and employment potential.

Estimate ongoing employment, economic output and gross value added (GVA) associated with the completed development, where applicable.
Assessment components vary according to project type, scope and available information.
Every assessment is tailored to evaluate core economic parameters and planning outcomes.
Capital investment, direct and indirect employment, economic output and gross value added.
Land use, development outcomes and alignment with relevant State and local planning objectives.
Project-specific characteristics, local planning considerations and regional development context.
Professionally prepared findings with transparent assumptions, supporting explanations and decision-useful results.
Tailored impact assessments supporting major development categories.




Whatever your organisation or role, we help you measure and communicate your project's potential value.

Strengthen business cases, subdivision and development applications with quantified economic and planning evidence.

Inform strategies, structure plans, scheme reviews and funding decisions with evidence-based economic and planning analysis.

Enhance client proposals with economic modelling and planning insights that demonstrate broader development contributions.

Evaluate economic potential and broader development outcomes with independent analysis to inform investment decisions.
Getting clear impact results can be harder than it should be. These are the most common hurdles.
Combining planning expertise with economic modelling.
Streamlined delivery – efficient assessment processes
Contemporary data – WA-relevant benchmarks
Quality assurance – review of inputs and results
Cost-conscious approach – tailored assessments
Sound methodology – transparent, evidence-based
Integrated analysis – economics and planning
Decision-ready reports – clear, structured findings
Independent advice – objective, evidence-based analysis
Planning insights – yields, density, land use and policy alignment
Quantified metrics – employment, output & GVA
Tailored assessment scope – proportionate to project scale
Practical insights – bridging data with planning
Impact by Example
Helping create lasting impact through better development decisions that leave a positive legacy.
Leading by example to inspire higher development standards and a more sustainable future.
Extensive statutory and strategic planning experience across residential, commercial, industrial and mixed-use developments.
Project-specific economic modelling using contemporary data, industry benchmarks and WA-relevant assumptions.
First-hand government and private sector experience, combining local planning expertise with practical development insights.
Confidential handling of client information, supported by secure business systems and data protection practices.
Our impact assessments provide evidence to support a wide range of development proposals, strategic planning initiatives and investment decisions.

Support development applications, subdivisions, rezoning and land use changes with economic and planning evidence.
Development applications
Subdivision proposals
Rezoning and scheme amendments

Inform structure plans, master plans, scheme reviews, employment land strategies and urban renewal initiatives.
Structure plans and precincts
Employment land strategies
Urban renewal and infill planning

Support feasibility investigations, land acquisition and investment proposals with quantified economic and planning impacts.
Development feasibility
Site acquisition and due diligence
Investment proposals and business cases

Support funding applications, infrastructure proposals and regional development initiatives with clear economic evidence.
Infrastructure justification
Funding applications
Regional development initiatives

Compare alternative land uses, development mixes, densities and staging options to understand their potential economic and planning implications.
Alternative development scenarios
Staging and land release
Project prioritisation

Communicate your project's economic contribution and planning outcomes to government, investors and stakeholders.
Planning submissions and advocacy
Community and stakeholder engagement
Evidence-based project communication
Assessment scope and methodology vary according to project type, scale and available information.
Find out how an economic and planning impact assessment can support your project.
Request a Fee ProposalWorking with Impexa is straightforward. Three clear steps from project brief to completed assessment.
01
Tell us about your project and we'll send you a tailored plan.
02
Provide the relevant project information and we'll take care of the assessment
03
Receive a project-specific assessment to support better development decisions and outcomes.
We combine project-specific information, ABS Input–Output economic modelling, industry benchmarks and WA planning frameworks to deliver clear, evidence-based economic and planning impact assessments.
We review your project's location, scale, land use, timeframe and objectives to establish the assessment scope.
We examine project information, costs and benchmarks to validate modelling inputs and assumptions.
We apply economic modelling to assess investment, employment, output and GVA alongside planning considerations.
We deliver clear, evidence-based reports to support planning proposals, business cases, and investment and funding decisions.
Economic impacts are modelled estimates based on project inputs, industry benchmarks and documented assumptions. Actual outcomes may vary.
Flexible assessment options to suit your project, scenarios and portfolio needs.
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One development project and scenario
Detailed assessment report
One-page impact summary
Project-specific findings and statements

Two to three development scenarios compared
Everything in the single-scenario assessment
Side-by-side scenario comparison
One round of revision following agreed project changes

Two or more separate projects or sites
Consistent methodology across projects
Portfolio-level comparison
Consolidated assessment and reporting
Tell us a little about your project or assessment needs, and we'll be in touch to discuss how we can help.
