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Planning

Strategic planning expertise that drives development

Planning sits at the heart of every development project  and at Marrons, it’s what we do best. Our planners combine technical knowledge with commercial understanding to manage complex planning systems and secure outcomes that unlock value and potential.

From small-scale residential schemes to major strategic sites, we provide clear, practical advice at every stage of the planning process. Whether you’re exploring options for a new site, preparing a planning application, or promoting land through the local plan, we bring technical rigour, sound judgement, and a collaborative approach that gets results.

Our planning services

We can support your project across the wide spectrum of planning services through every stage of the development lifecycle. From early feasibility to post-consent delivery, applications to appeals, our experienced team provide a full planning service.

Our core expertise includes:

Applications and appeals

Preparation and management of all types of planning applications and appeals, ensuring proposals are well-evidenced, policy-compliant, and deliverable.

Planning applications • Advertisement consent • Planning appeals • Enforcement appeals • Expert witness • Certificates of lawful development • Prior notification applications • Permitted development advice • Planning statements • S.73 and S.96A applications

Assessment and strategy

Clear early-stage advice to identify the opportunities, constraints, and risk, helping clients make informed investment and development decisions.

Feasibility assessments • Site appraisals • Planning strategies • Environmental impact assessments • Landscape and visual impact assessments • Flood risk sequential tests • Healthcare and retail impact assessments • Defensive planning strategies and objections

Promotion and Policy

Representing land and development interests through plan-making processes, site promotion, and allocation strategies to achieve long-term value and deliverability.

Development plan representations • Neighbourhood plan submissions • DCO support • Planning policy monitoring • Site promotion

Enforcement and resolution

Proactive advice and representation in managing planning enforcement issues, retrospective consents, and negotiations with planning authorities.

Planning enforcement advice • Retrospective planning applications • S.106 heads of terms and renegotiations • Condition review and discharge

Engagement & Delivery

Supporting clients beyond consent to keep projects on track, compliant, and positively received by stakeholders

Pre-application submissions • Public consultations • Stakeholder engagement • Planning committee support • Instructions to counsel

Why clients choose us

01

Straightforward advice

We give clear, evidence-based advice to achieve your desired objective.
02

Reliable and professional

Our experienced team are dedicated to managing your project to a timely and detailed manner.
03

Experience at every level

From small individual developments to major strategic schemes, we understand what success looks like for every client.
04

Teamwork you can trust

Our planners work closely with colleagues in design, heritage and Socio-economics to ensure joined-up, well-presented proposals.
05

Proven results

We have helped secure hundreds of consents and appeal wins across housing, commercial, and mixed-use developments.

Working with Marrons means working with architects who understand the full development journey — not just the design. We anticipate challenges, adapt to constraints and help clients make informed, confident decisions that deliver beautiful, commercially successful and socially meaningful outcomes.

Who we work with

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Developers

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Landowners

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Housebuilders

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Local authorities

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Investors

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Infrastructure providers

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Private individuals

Work with professionals

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Brian Mullin

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 1

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 2

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 4

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 3

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 5

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 6

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

Brian Mullin 7

Partner & Head of Marrons

Specialisms:

  • Commercial Development
  • Family Business
  • Planning & Environmental
  • Real Estate

As the head of Marrons, Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully navigate the planning system.
A chartered member of the Royal Town Planning Institute since 2007, Brian combines deep technical knowledge with strategic insight, developed through a BSc in Environmental Planning and two postgraduate diplomas in Environmental Planning and in Construction and Project Management, all from leading institutions in Belfast.

He began his career as a local government officer, before joining Marrons in 2008, where he played a key role in shaping the consultancy’s national presence and reputation.

Based in the Midlands, Brian is a planning policy expert, providing strategic and technical planning development advice to a broad range of clients. Working predominantly within the English planning regime, Brian works across a range of sectors in the development industry including residential, office, industrial, retail, education, renewable energy, telecommunications, heritage, urban regeneration and rural development, and leisure and tourism.

Brian is a highly experienced and nationally recognised town planning expert, helping clients successfully negotiate the planning system. He takes a lead role in the assembly and management of multi-disciplinary teams who coordinate, prepare and submit planning applications. He also acts as expert witness at examinations, public inquiries and appeal hearings.

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Architecture

We shape connected, people-centred environments that combine identity, purpose, and long-term value. By integrating public realm, layout, and movement strategies, we create distinctive, usable places that enhance communities and encourage positive engagement.

Environmental Impact Assessment (EIA) 

Master-planning and Urban Design 

We shape connected, people-centred environments that combine identity, purpose, and long-term value. By integrating public realm, layout, and movement strategies, we create distinctive, usable places that enhance communities and encourage positive engagement.