A public-space design works when the people it is intended to serve can reach it, feel able and willing to stay, carry out the activities the project promised, and experience the space as safe, comfortable and inclusive. You cannot establish that with a single attendance figure or a visual inspection. Use a focused question, study the physical setting, observe what people actually do, and ask users—including people who are absent or face barriers. Then use the findings to adjust design, programming or management and check again.
This approach produces evidence for a park, plaza, street, civic forecourt or neighborhood network without pretending that one universal score fits every place. The methods below adapt to the project’s purpose, scale, season and community.
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Define what “works” means for this project
Begin with the outcome the project is meant to support, not with a ready-made checklist. A shaded plaza may be intended to support informal meetings and lunch breaks; a play street may prioritize children’s independent movement; a civic square may need to host both everyday use and occasional events. Write the intended users and the behaviors or experiences the design should enable.
Turn the vision into one answerable question
State a question that can guide data collection, such as: “Can older residents reach and comfortably use the seating area?” or “Does the redesigned street support safe lingering as well as movement?” Gehl and the Van Leer Foundation’s Urban95 Public Life Data Framework recommends a shared public-life vision informed by a central research question and an evaluation plan suited to that vision and the site’s scale.
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Set the dimensions of success
Use a small set of dimensions tied to the question. Typical dimensions are:
- Access: Can people reach the space by the modes available to them, and can they enter and move through it?
- Use: Are the intended activities occurring, and can people stay for as long as they need?
- Experience: Do users describe the space as comfortable, welcoming, safe and useful?
- Inclusion: Are different ages, abilities, genders, schedules and reasons for visiting represented, or is someone missing?
- Spatial performance: Do buildings, edges, paths, seating, shade, lighting and other elements support the desired behavior?
- Operations: Do programming, maintenance, rules and management reinforce or undermine the physical design?
These dimensions are a decision framework, not a universal pass/fail rating. A space may be busy yet inaccessible to some groups, or visually attractive yet unable to support the activities promised.
Choose the right study area and comparison
One site and its walkable context
For a single park, plaza or street, assess the site together with the surrounding area that supplies users and affects access. UN-Habitat’s Public Space Site-Specific Assessment describes a five-minute walking radius equivalent to 400 metres. Treat 400 metres as a planning reference, not a guarantee that every person walks that distance: terrain, crossings, barriers, climate and mobility needs can make the practical catchment smaller or larger.
Map entrances, crossings, transit stops, adjoining streets, housing, schools, workplaces and other destinations. Include routes people actually use, not only the boundary shown on a plan.
A city-wide network question
If the decision concerns a policy, investment program or distribution of public spaces, a single-site audit is insufficient. The UN-Habitat City-wide Public Space Assessment Toolkit examines the network’s distribution, accessibility, quantity, quality and connections. It can show whether well-designed spaces are concentrated in a few districts while other residents lack a usable space nearby.
Before-and-after or option comparisons
For a redesign, compare conditions before and after the intervention. For competing design options, compare each against the same project goals and user groups. Keep observation locations, time windows, weather notes, questions and recording rules as comparable as practical. If conditions differ, record the difference rather than presenting the results as a clean experiment.
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| Comparison axis | Question it answers |
|---|---|
| Project goals | Does the option enable the activities and experiences the brief promised? |
| User groups served | Who can use it, who cannot, and who is absent? |
| Access and connections | Can people reach, enter and move through the space from the surrounding network? |
| Observed activity | What do people actually do, where, and for how long? |
| Perceived experience | What do users value, avoid or find difficult? |
| Spatial conditions | Which physical elements help or hinder the intended use? |
This comparison structure synthesizes the site, city-wide, public-life and participatory approaches described by UN-Habitat and Gehl; it is not an official scoring standard.
Build a mixed-method evaluation
Use complementary evidence rather than asking one method to answer every question. Gehl’s Social Spatial Research describes combining observations of public-life behaviors and perceptions with assessment of buildings, streets and public-space elements. Its engagement methods include workshops, focus groups and intercept surveys.
Observation: record behavior in place
Observation shows what happens, where it happens and when. Prepare a simple field sheet or digital form with a map, time stamp, weather and the behaviors relevant to your question. Depending on the project, record activities such as walking through, sitting, talking, playing, eating, waiting, exercising, attending an event or using a route to reach another destination.
- Divide the site into observable zones. Mark entrances, paths, seating areas, edges, play or exercise elements, conflict points and places with different shade or exposure.
- Choose repeated time windows. Include the periods when the intended users might appear—such as school travel, workday lunch, evenings or weekends—and note season and weather.
- Use the same definitions each time. Decide what counts as a person staying, passing through, queueing or participating in an activity. Train observers to apply those definitions consistently.
- Record location as well as volume. A total count can hide an empty seating area beside a crowded path. Map where activities cluster and where people avoid.
- Note duration or turnover when it matters. A space used by many people for a few seconds performs differently from one where people can comfortably remain.
- Log conditions that may explain the pattern. Record shade, noise, construction, blocked paths, maintenance, programmed events and unusual disruptions.
Counts describe presence and behavior; they do not by themselves establish comfort, safety, accessibility or usefulness for different groups.
Spatial assessment: inspect the setting that shapes behavior
Walk every approach and interior route. Assess the relationship between buildings and the public realm, edges and visibility, path continuity, crossings, gradients, surface condition, seating, shade, shelter, lighting, toilets, drinking water, play or exercise equipment, signs, planting, noise, traffic and maintenance. Record both the presence of an element and its condition and usability.
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User perspectives: ask people about lived experience
Short intercept conversations can reveal why someone stayed, left, avoided an area or never visits. Longer interviews, focus groups and workshops can explore routines, concerns and ideas for change. Ask open, concrete questions:
- What brings you here, and what do you usually do?
- Where do you feel comfortable or uncomfortable, and why?
- What makes it easy or difficult to reach, enter or stay?
- Who do you think is missing from this space?
- What one change would make it more useful?
Explain the purpose, seek informed consent where required, protect personal information and offer accessible ways to participate. Gehl’s framework asks teams to consider accountability and transparency with stakeholders and the community; tell participants how findings will influence decisions and what is outside the project’s control.
Check who is visible—and who is missing
A central inclusion test is the question, “Who is invisible in public space?” The Urban95 framework uses it to prompt teams to look beyond the people easiest to count. Compare attendance and experience across ages, abilities, genders, income or tenure where appropriate, cultural or language groups, caregivers, workers, visitors and people with different schedules.
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Look for barriers, not presumed preferences
An absent group may be deterred by a steep route, unsafe crossing, lack of toilets, heat, cost, policing, social norms, opening hours, poor lighting, conflict with traffic or a design that does not support their activity. Absence alone cannot tell you which explanation applies. Invite people who are missing or underrepresented, work with trusted local organizations, and offer translated, remote or mobility-friendly participation when needed.
Sample across time and conditions
A single sunny afternoon can overrepresent visitors with flexible schedules and hide evening, winter or bad-weather problems. Repeat observations across relevant days and times, and state the conditions in the record. If a construction phase, event or temporary closure changes behavior, treat that observation as contextual rather than typical.
Make participation consequential
Close the loop with participants: publish a plain-language summary, identify which suggestions will be adopted or tested, and explain constraints when a request cannot be met. Participation is evidence about lived experience, not a vote that replaces professional, accessibility or safety analysis.
Match methods to the decision
| Evaluation need | Useful approach | What it helps answer |
|---|---|---|
| One space and its neighborhood | UN-Habitat site-specific assessment with participatory data gathering in the space and its walkable radius | Which site conditions and nearby connections should inform design and planning? |
| City-wide network | UN-Habitat city-wide inventory and assessment | Where are spaces located, and how are distribution, access, quantity and quality functioning? |
| Public life and everyday use | Gehl-style observation paired with spatial assessment and user perceptions | Which places support activity and experience, and what conditions help or hinder them? |
| Inclusive or health-oriented project | Participatory assessment with explicit attention to access and underrepresented users | Whose experience is not represented, and what changes could improve inclusion? |
Choose the least complicated plan that can answer the decision responsibly. Gehl’s Urban95 framework notes that an evaluation plan may be simple or complex as long as it is useful for data collection and accountable to stakeholders.
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Triangulate instead of averaging away disagreement
Place observation, spatial findings and user accounts side by side. Suppose a plaza has high footfall, but wheelchair users describe difficult access and most people pass through rather than stay. The correct conclusion is not “successful” or “failed” overall; it is that movement is strong while staying and inclusive access require attention. Treat disagreements as questions to investigate, not errors to hide.
Separate description, interpretation and decision
- Description: what was observed, measured or reported, with location, time and conditions.
- Interpretation: the most plausible explanation, including competing explanations and evidence limits.
- Decision: the specific design, programming or management change to test.
Keep the evidence trail so a client, community or contractor can see how a recommendation was reached. Avoid claiming that a count proves safety, that a preference applies to everyone, or that a single audit predicts long-term use.
Use context-specific standards
UN-Habitat’s 2023 Public Space Assessment, Design and Management Methodology was tested on the ground with municipalities in the West Bank and Gaza Strip and is contextualized for the Palestinian context. It is a useful example of an adaptable assessment, design and management process—not universal validation for every region. Adapt the questions, language, access criteria and governance arrangements to local law, climate, culture and community priorities.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Turn findings into design, programming and management changes
Translate each important finding into an action with an owner and a way to check the result. A construction or capital project can change the physical layout; an operator may be able to change schedules, rules, cleaning or programming sooner; a city may need a network or policy response.
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- Repair or complete routes where people are blocked, diverted or exposed to unsafe crossings.
- Reposition, add or vary seating, shade, shelter and edges to support the activities users actually value.
- Improve sightlines and lighting where people report discomfort, while avoiding measures that exclude legitimate users.
- Resolve conflicts between movement and staying by clarifying paths, crossings and activity zones.
- Specify durable, maintainable materials and accessible details that fit the local operating capacity.
Programming changes
- Schedule activities at times and locations that reach underrepresented users rather than only those already present.
- Test temporary or low-cost arrangements before committing to permanent construction when the design question is uncertain.
- Coordinate events with everyday use so programming does not remove the only comfortable space for routine visitors.
Management changes
- Adjust cleaning, repairs, opening hours, permits, enforcement or stewarding when operations are the barrier.
- Publish clear information about access, facilities and events in formats users can understand.
- Assign responsibility for each action and a date or condition that will trigger review.
Run the evaluation as a feedback loop
Gehl’s Urban95 framework describes a data feedback loop: test major changes, assess their impact and fine-tune interventions. After an intervention, repeat the parts of the evaluation that answer the original question, using comparable methods where possible. Add new questions only when the change creates a new risk or opportunity.
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There is no single follow-up interval that fits every space. Set the schedule according to the intervention, seasonality, operating patterns and team capacity. A temporary seating trial may need frequent checks during its first weeks; a landscape or network change may require observations across seasons. Record the chosen interval and why it is appropriate rather than presenting it as a universal rule.
Common evaluation mistakes and their fixes
Declaring success from attendance alone
Problem: a busy space is assumed to be accessible, comfortable and safe for everyone.
Fix: pair counts with spatial inspection and direct feedback, and examine who is not present.
Using a generic checklist without a project question
Problem: teams collect attractive data that cannot guide a decision.
Fix: start with the intended outcome, users and scale; collect only evidence that can answer the question.
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Studying only the site boundary
Problem: an excellent interior is undermined by an inaccessible route or missing connection outside the property.
Fix: include the surrounding walkable context for a site project and the wider network for a city-wide question.
Counting the easiest people to reach
Problem: daytime visitors become a proxy for the whole community.
Fix: vary times and methods, seek underrepresented users and document barriers that may explain absence.
Treating a framework as a universal score
Problem: a local method is presented as a definitive pass/fail test everywhere.
Fix: adapt the framework to context, disclose limits and show how findings relate to the project’s own goals.
Collecting opinions without returning results
Problem: participation becomes extractive and trust declines.
Fix: explain what changed, what will be tested and why some requests cannot be implemented.
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- Have we written the intended outcome and named the users?
- Is there one clear question that the evaluation must answer?
- Does the study area include the relevant approaches and connections?
- Are observation periods representative of the space’s operating pattern and season?
- Will we combine behavior, spatial conditions and user experience?
- Have we planned meaningful participation by people who are absent or face barriers?
- Are definitions, recording rules, consent and data handling clear to the team?
- Can we distinguish what was observed from what we infer?
- Does every major finding have a possible design, programming or management response?
- Who owns each action, and when will we check whether it helped?
Further guidance
UN-Habitat’s Global Public Space Toolkit: From Global Principles to Local Policies and Practice provides broader policy and practice context. For public-life study methods and tools, see How to Study Public Life by Jan Gehl and Birgitte Svarre (Island Press, 2013). Gehl reports that its cornerstone Public Life Public Space methodology has been applied in more than 250 cities globally; that is a company-reported figure, not an independent evaluation of impact.
Jan Gehl summarizes the purpose of a successful public realm this way: “A good city is like a good party — people stay longer than really necessary because they are enjoying themselves.” The evaluation task is to determine, with local evidence, for whom that is true, under what conditions and what must change for more people to share the benefit.
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