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Feasibility & Advice

Planning Feasibility Appraisals

Assess development potential before commitment

Before committing time, cost or resources to a planning application, it is essential to understand what your site can realistically support under current planning policy. A planning feasibility appraisal provides a clear, evidence-based assessment of development potential, site constraints, relevant planning history and likely local planning authority scrutiny, allowing early identification of risks and opportunities.

Contemporary new homes in a completed residential development
Evidence before commitment
Planning risk
made clear
Pre-Application Advice Site Constraints Planning History Development Potential Local Planning Policy Conservation Areas Green Belt Access & Amenity
Planning context

Rubix’s feasibility appraisals are grounded in national and local planning policy, the adopted development plan and relevant decision-making context, offering honest, policy-informed advice that helps you make confident and informed decisions at an early stage.

What Planning Feasibility Appraisals Consider

A thorough feasibility appraisal reviews all factors that influence whether development is likely to succeed in planning terms:

  • Site context, planning history and local constraints
  • Local and national planning policy framework
  • Development potential based on design, scale and use
  • Site designations (e.g. conservation area, green belt)
  • Access, amenity and environmental constraints
  • Local authority precedents and officer expectations
Hands holding and pointing to a colour-coded floor plan

When this service is appropriate

A planning feasibility appraisal is typically commissioned at an early stage, where clarity on planning risk, opportunity and constraint is required before further time or cost is committed. This service is particularly appropriate:

  • Before purchasing land or property where development potential is uncertain
  • Where site constraints, planning designations or local policy tensions are likely to influence outcomes
  • At an early design stage, where options remain flexible and strategy can still be shaped
  • To inform funding decisions, negotiations or viability discussions
  • Where planning history or local authority decision-making context is likely to be influential
  • When deciding whether to proceed, pause or redirect a proposal before formal submission

This assessment provides an informed basis for decision-making, allowing projects to move forward with greater confidence or to be reconsidered where risk outweighs opportunity.

Frequently Asked Questions

What is a planning feasibility appraisal?

A feasibility appraisal is an early-stage planning review that assesses the potential of a site under existing planning rules and local policy, considering planning history, constraints and development prospects.

Do I need a feasibility appraisal before a planning application?

It is not mandatory, but commissioning one early can clarify likely outcomes, reduce risk and inform design or application strategy before significant investment, particularly on constrained or sensitive sites.

Will a feasibility appraisal guarantee consent?

No. A feasibility appraisal does not guarantee consent but provides an informed assessment of what is reasonably achievable in planning terms, reducing uncertainty and supporting better decision-making at an early stage.

How long does a feasibility appraisal take?

Timescales vary based on site context and complexity, but we structure our work to provide clear conclusions in a practical timeframe tailored to your needs.

Our approach

How we deliver robust planning advice

Authority. Experience. Delivery.

Every instruction is approached through the same disciplined framework: authoritative policy analysis, experienced professional judgement and clear, practical delivery.

This gives clients a defensible planning strategy and a realistic route from the first review to the final decision.

Authority

Policy-led advice

Our advice is grounded in adopted development plans, national planning policy and local decision-making context, ensuring proposals are realistic, defensible and aligned with how authorities assess development.

Planning judgement

Beyond policy compliance, we apply informed professional judgement to assess risk, balance competing considerations and shape proposals that are likely to succeed in practice.

Experience

Depth of experience

We advise across a wide range of residential, commercial and heritage projects, bringing practical experience of varied sites, constraints and local authority approaches.

Delivery

Clear, honest guidance

We provide straightforward advice, explain constraints and risks clearly, and guide clients through the planning process with transparency and realism at every stage.

Integrated planning and design support

Our planning advice is closely coordinated with design input, allowing policy, layout and scale to be considered together and resolved efficiently.

Rubix Planning provides clear, policy-led planning advice grounded in professional judgement and real decision-making experience. Our role is to help clients understand what is realistically achievable and how best to proceed.

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Contact us

Chartered town planning consultants providing clear, policy-led advice across London and the South East.

0333 444 0208info@rubixplanning.com
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