Meet Our Team

At Cornerstone, we bring together a compact, highly experienced team with diverse backgrounds in planning, engineering, architecture, business, social and environmental sciences, and community engagement. Our Associates each bring specialized expertise while working seamlessly as part of an interdisciplinary, collaborative team. Guided by our Partners, who have decades of experience in strategic and systems planning, we approach every project with a balance of rigorous analysis, innovative problem-solving, and practical solutions. This breadth of knowledge and commitment to excellence allows us to deliver high-quality outcomes across a wide range of contexts, earning the trust of many repeat clients who value our unique ability to integrate multiple perspectives into effective, forward-looking plans.

Partner

Quentin Talbot-Kelly

Quentin Talbot-Kelly is one of Western and Northern Canada’s leading practitioners in recreation strategy, feasibility studies, and community facility planning. A Partner at Cornerstone Planning Group, he brings a rare combination of deep analytical capability and extensive sector-specific experience. Since shifting his practice to recreation and community infrastructure planning in 2016, Quentin has become a central leader for Cornerstone’s strategic planning office and a trusted advisor to municipalities, First Nations, territorial governments, and institutional clients across the region.

Quentin’s portfolio includes dozens of major aquatic, arena, cultural, and multi-use community facility studies, along with large-scale campus and long-range facilities strategies. His work is characterized by a methodical, evidence-driven approach that blends demand analysis, operational modelling, utilization assessment, and financial feasibility. Known for his ability to distill complex service, operational, and infrastructure issues into defensible options, he delivers planning outcomes that balance community needs, operational realities, and long-term sustainability.

With a background in mechanical engineering and certification as a Project Management Professional, Quentin’s early career in design, project engineering, and multidisciplinary project management informs his structured, root-cause-oriented planning style. His strong client relationships and collaborative way of working have earned him a reputation for politically astute and practical insight, making him a highly sought-after leader in the community planning sector.

Managing Director

Natasha Sischka

Natasha is a high-impact strategist with over 15 years of experience helping public-sector organizations rethink how they work, deliver services, and plan for the future. With deep capabilities in business improvement, process engineering, evaluation, and project leadership, she guides clients through complex transformations with a sense of ease and assurance.

As Managing Director at Cornerstone, Natasha has shaped major initiatives across healthcare, municipal services, public safety, recreation, and child protection, consistently driving smarter decisions and stronger outcomes. She thrives in environments of complexity and ambiguity, motivated by a genuine commitment to helping people and organizations perform at their best. Her work spans some of the most challenging and highly scrutinized public environments, where accuracy, diplomacy, and credibility are essential. Through authentic engagement, insightful analysis, and expert financial modelling, she uncovers strategic opportunities, challenges assumptions with care, and supports confident decision-making.

Natasha’s greatest strengths lie in her people-first approach and exceptional facilitation skills, enabling her to build alignment quickly and authentically in complex situations. Her ability to unite diverse perspectives, create clarity, and generate forward momentum has made her a trusted advisor for organizations across Canada.

Partner (Currently on Maternity Leave)

Melanie Roskell

Melanie Roskell is one of Canada’s most respected and sought-after experts in healthcare service and facility planning. A Partner at Cornerstone Planning Group, she has built a national reputation for leading some of the country’s most complex clinical planning and functional programming projects, spanning acute care, surgical services, medical imaging, community health, mental health and substance use, long-term care, and other highly specialized environments. With a foundation in systems design engineering and a master’s degree in neuroscience, Melanie brings a level of analytical depth, operational fluency, and systems thinking that is highly valued in this field.

Over her consulting career, Melanie has delivered planning work that has shaped entire hospital campuses, enabled major capital investments, and guided provincial and regional service delivery decisions. She has served as the lead functional programmer on numerous large-scale hospital redevelopment initiatives, including clinical service plans, detailed functional programs, MDRD planning across multiple jurisdictions, and high-acuity, highly technical program areas. She produces deliverables that become the foundation for long-term system transformation, and her work is recognized for its precision, depth, and usability: clients rely on her models and recommendations years after initial project delivery because they stand up to operational testing, capital scrutiny, and evolving healthcare realities.

Melanie is also known for her ability to successfully navigate high-stakes environments. She leads projects involving multiple health authorities, diverse clinical groups, Indigenous communities, facility operators, and multidisciplinary technical teams, often in contexts where needs are urgent, resource constraints are significant, and stakeholder perspectives vary widely. Her capacity to synthesize clinical priorities, operational workflows, staffing patterns, resource requirements, and spatial implications into coherent strategies is a defining strength and a reason she is repeatedly trusted with the sector’s most challenging assignments.

Melanie’s reputation in the sector rests not only on her technical excellence but on her presence: energetic, sharp, warm, and relentlessly principled. She brings intensity when needed, calm when required, and an unwavering focus on doing what is right. In a field where true system thinkers are rare, Melanie is a genuine unicorn: an expert planner, an analytical mind, and an engaging, values-driven leader who elevates every project.

Senior Associate

Anthea Ho

Anthea brings over 12 years of experience in helping public sector clients including universities, colleges, and municipalities clarify and align their project vision to unlock potential. Her versatile skills span from authoring compelling business cases to meticulous space planning and collaborative stakeholder engagement work. Anthea's work encompasses projects of varying scales, from small office space retrofits to comprehensive campus master planning. With a background as a registered architect, she has followed projects through from the early definition stages to the completion of construction. This hands-on experience has equipped Anthea with a deep understanding of the critical questions that must be asked and explored during the initial phases to ensure a project's success in meeting user needs and realizing the envisioned goals. Anthea's diverse portfolio showcases her expertise in various typologies, including co-located community libraries, student commons, mixed-use student housing, health science facilities, trades facilities, community recreation spaces, and museum projects.
Senior Associate

Sean Montgomery

Sean has a strong background in methodical and analytical studies providing him with effective technical skills. He excels at data management by implementing planning principals to data collection and report writing, he is able to refine large data sets to allow for simple extraction. He is able to combine his education, practical skills, and passions in the workplace to become a driven and efficient professional.

Sean holds a diploma in Architectural Technologies, bachelors in Urban and Regional Studies, and post degree diploma in Applied Urban Planning.

Senior Associate

Verónica Ardila Vernaza

Veronica is an architect & urban law specialist who holds a Masters of Engineering Leadership in Urban Systems (MEL) from the University of British Columbia. She has over ten years of international experience working in both private and public sectors in urban planning, community engagement and urban policy review, development, and analysis.
Veronica’s strong leadership and group management skills in multidisciplinary processes help her to coordinate and develop successful and thorough urban policies and regulations for the development of large urban infrastructure projects as well as multi-use developments. She has developed several Master Plans, Community Plans and Land Use and Urban Impact analysis for diverse organizations. Veronica has strong creative problem-solving skills and comprehensive and collaborative team-oriented attributes, that she brings to every project.
Associate

Jonathan Mak

Jonathan is a planning professional with a Master of Planning in Urban Development and a B.A. in Geography (Environment & Sustainability). He has experience working on a variety of projects with the public sector and non-profits, including arts and culture planning, housing policy, supportive housing, and active transportation. With his experience working on projects with very different sets of needs in different communities, he is adept at tackling complex projects, understanding the differing needs and nature of every project, and using a data-informed approach to find solutions.

Jonathan is skilled in data interpretation and analysis, community engagement, report-writing, data visualization, and project coordination. He is passionate about finding creative solutions to complex problems and finding ways to communicate ideas in easily understandable ways.

Associate

Sarah Nickerson

Sarah is a planning professional with a major in Psychology and post-graduate studies in Applied Urban Planning. With experience in the public sector, she has a solid understanding of the development process from a local government perspective. Her background in municipal planning and development applications showcases her in-depth knowledge of legislation and municipal bylaws.

Sarah’s skills include community data and geospatial analysis, report writing, and project coordination. Sarah’s prior experience in the service industry has provided her with exceptional interpersonal and communication skills that serve her well when articulating planning information to a wide variety of audiences.

Associate

Niamh O'Neill

Niamh is an associate at Cornerstone Planning Group. She is a skilled researcher and analyst. She brings over seven years’ experience across a wide range of public and private sectors, including academia, healthcare, community settings, and government bodies, among others.

Niamh’s educational background helped her to develop and hone her research skills. From conception to design and execution, Niamh developed original research investigating a diverse mix of structures and systems. She has extensive experience using multiple research methodologies, making her an expert in both qualitative and quantitative data. Her work involves designing and implementing research questionnaires, interviews, and surveys to provide data-driven solutions. Her unique skillset and experience lend itself to her ability to develop effective strategic plans and manage complex projects.

Project Coordinator

Rebeca Galvao

Rebeca supports both project delivery and internal operations at Cornerstone, blending her background in business operations with strong analytical and organizational skills. She contributes to client work through project coordination, proposal development, and research support. Rebeca’s attention to detail and proactive approach make her a valuable resource across teams, helping drive efficiency and uphold the firm’s commitment to thoughtful, impactful planning.
Canine Associate

Cleo

Cleo may be the youngest Canine Associate; however, she brings enthusiasm and dedication to the role that only a Bernese Mountain Dog/Australian Shepard could. Cleo loves the walk into the office, treats, and her fellow associates (human and canine).
Maisie
Canine Associate

Maisie

Maisie is a Bernese Mountain Dog, and our first canine associate. Giver of snuggles and eater of treats, she brings the office an adorable vitality.
Canine Assossicate

Wheeler

Wheeler's special skills include snacking and snoring. Although extremely goofy, he is very obedient with an unparalleled commitment to customer service.

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