Settlement Design: Urban Development Skill

You help writers create realistic settlements by applying the ten core principles that govern how real cities and towns form, grow, and evolve. This produces urban environments that feel lived-in rather than designed-for-plot.

Core Principles

• Geographic Determinism: Natural features profoundly shape settlement patterns and growth

• Functional Necessity: Settlements develop to fulfill specific economic, defensive, or social needs

• Network Emergence: Settlements exist within interconnected systems, not isolation

• Layered Development: Urban spaces evolve through accretion rather than comprehensive planning

• Power Projection: Settlement design reflects and reinforces social and political hierarchies

• Resource Constraint: Available materials and technologies limit construction possibilities

• Cultural Expression: Built environments embody cultural values and social organization

• Adaptive Reuse: Structures and spaces are repurposed as needs change over time

• Disaster Response: Settlements evolve in reaction to catastrophes

• Spatial Stratification: Social hierarchies manifest in physical organization of space

The Ten Parameter Categories

1. Site Selection Parameters

Parameter Options to Consider

Water Access Rivers, lakes, coastlines, springs, wells

Defensive Position Elevation, natural barriers, visibility

Resource Proximity Mines, timber, fertile soil, wildlife

Trade Route Placement Crossroads, harbors, mountain passes

Climate Suitability Temperature, rainfall, seasonal patterns

Spiritual Significance Sacred sites, astronomical alignments

2. Morphological Parameters

Parameter Options to Consider

Street Pattern Grid, radial, organic, hierarchical

Density Gradient Concentrated to dispersed population

Boundary Definition Walls, natural features, markers

Building Typology Predominant architectural forms

Open Space Distribution Plazas, parks, markets, fields

Vertical Development Height variation and skyline

3. Functional Parameters

Parameter Options to Consider

Economic Base Agricultural, industrial, commercial, administrative

Defense Systems Fortifications, surveillance, escape routes

Civic Organization Governance spaces and structures

Social Infrastructure Meeting places, recreational areas

Religious Facilities Temples, shrines, ceremonial spaces

Knowledge Centers Schools, libraries, universities

4. Infrastructure Parameters

Parameter Options to Consider

Water Management Supply, drainage, waste disposal

Transportation Network Roads, bridges, canals, ports

Food Storage/Distribution Granaries, markets, warehouses

Energy Systems Fuel sources, power distribution

Waste Management Disposal, recycling, sanitation

Communication Infrastructure Message systems, signals

5. Socio-Spatial Parameters

Parameter Options to Consider

Elite Spaces High-status residential and ceremonial areas

Common Quarters Everyday residential areas

Marginalized Zones Low-status or excluded populations

Transitional Spaces Areas between different social domains

Contested Territories Disputed or ambiguous ownership

Ethnoreligious Districts Cultural/religious group clustering

6. Symbolic Parameters

Parameter Options to Consider

Monumental Expression Power and identity representations

Ritual Pathways Procession routes and ceremonial ways

Collective Memory Sites Historical event markers

Identity Boundaries Cultural and social group divisions

Cosmic Alignment Astronomical and religious orientations

Status Signification Social rank indication through space

Settlement Typologies

By Primary Function

Type Characteristics

Market Settlement Trade-focused community

Administrative Center Governance-oriented city

Religious Complex Faith-centered settlement

Military Outpost Defense-focused installation

Production Center Manufacturing/resource extraction

Agricultural Community Farming-based settlement

Transport Hub Movement-facilitating location

Knowledge Center Education/research community

By Morphological Pattern

Type Characteristics

Planned Grid Regular, organized street network

Concentric Settlement Rings around central point

Linear Development Elongated along path/feature

Organic Cluster Irregular, emergent organization

Radial Pattern Streets extending from central hub

Composite Structure Multiple morphological sections

Dispersed Settlement Scattered buildings without center

Nucleated Village Tightly clustered around focal point

By Geographic Setting

Type Characteristics

River Settlement Waterway-oriented community

Coastal Port Sea-facing trade center

Hill Town Elevated defensive position

Valley Community Nestled between heights

Plains Settlement Flat terrain development

Mountain Outpost High-altitude location

Island Development Water-surrounded community

Desert Oasis Arid region water-centered

By Scale and Complexity

Type Population Range

Isolated Homestead Single family/small group

Hamlet Small cluster, no specialization

Village Basic community, simple division of labor

Town Medium settlement, some specialization

City Large settlement, complex organization

Metropolis Major urban center, regional dominance

Megalopolis Interconnected urban region

Imperial Capital Political/cultural center of empire

Development Patterns

Settlement Evolution Sequences

• Camp → Hamlet → Village → Town → City → Metropolis

• Military Outpost → Frontier Settlement → Regional Center → Capital

• Religious Shrine → Pilgrimage Site → Temple Complex → Holy City

• Trading Post → Market Town → Commercial Center → Trade Metropolis

• Mining Camp → Industrial Town → Manufacturing City

• Fishing Settlement → Port Town → Maritime Hub → Naval Center

Spatial Growth Patterns

Pattern Description

Concentric Expansion Growth in rings around original settlement

Axial Development Expansion along transportation corridors

Leap-frog Growth Discontinuous development with gaps

Infill Densification Filling empty spaces within existing areas

Satellite Formation Secondary settlements around primary center

Linear Extension Growth along single axis

Cellular Accretion Addition of whole neighborhoods/districts

Polycentric Evolution Multiple growing centers merging

Crisis and Adaptation Cycles

Crisis Response Pattern

Fire Destruction Rebuilding with fire prevention

Flood Damage Elevated construction, flood control

Disease Outbreak Sanitation improvement

Siege/Invasion Enhanced fortification

Resource Depletion Economic diversification

Overcrowding Peripheral expansion, vertical growth

Political Collapse Fragmentation, repurposing

Setting-Specific Adaptations

Fantasy Settings

• Magical Resource Urbanization: Settlement around arcane energy sources

• Multi-Race Architecture: Designs for diverse species needs

• Defensive Magic Influence: Mystical protection affecting urban form

• Divine Presence Planning: City design reflecting divine will

• Magical Transportation Effects: Portal/teleportation impact on layout

Science Fiction Settings

• Environmental Dome Cities: Enclosed settlements on hostile worlds

• Orbital Habitat Design: Artificial gravity considerations

• Subterranean Complexes: Underground urban development

• Interspecies Cohabitation: Multi-species urban accommodation

• Zero-G Settlement Design: Spatial organization without gravity

Post-Apocalyptic Settings

• Ruin Repurposing: Adaptation of pre-collapse structures

• Defensive Scarcity Design: Resource protection-focused layout

• Contamination Avoidance: Hazard-driven settlement location

• Technological Regression: Designs following capability loss

• Remnant Infrastructure: Communities around surviving systems

District Design

Naming Patterns

Pattern Examples

Function-Based Market Quarter, Warehouse District

Social Class Reference Noble Quarter, Craftsmen's Row

Historical Development Old Town, New District

Geographic Position North Ward, Riverside

Ethnic/Cultural Elvish Quarter, Foreign District

Occupational Cluster Tanner's Lane, Merchant Row

District Types

Type Characteristics

Commercial Markets, shops, warehouses, trade halls

Residential (Elite) Large homes, gardens, quiet streets

Residential (Common) Dense housing, narrow streets

Industrial Workshops, manufacturing, pollution

Religious Temples, monasteries, sacred spaces

Administrative Government buildings, courts, archives

Entertainment Theaters, taverns, pleasure houses

Military Barracks, armories, training grounds

Implementation Process

Step 1: Site Selection and Analysis

• Identify key geographic features

• Assess resource availability

• Evaluate defensive potential

• Analyze transportation connectivity

• Consider climatic conditions

Step 2: Foundation Establishment

• Determine founding purpose

• Select initial morphology

• Establish core structures

• Define original boundaries

Step 3: Growth Phase Development

• Map expansion patterns

• Add district specialization

• Develop infrastructure networks

• Create social stratification zones

Step 4: Historical Layering

• Incorporate crisis events

• Show adaptive responses

• Create architectural palimpsest

• Develop contested spaces

Step 5: Contemporary State

• Define current function

• Map active/declining areas

• Identify tensions and conflicts

• Show ongoing changes

Implementation Checklist

• Define site selection rationale

• Choose primary function type

• Select morphological pattern

• Map district organization

• Design infrastructure systems

• Create social stratification zones

• Develop historical layers

• Include crisis response evidence

• Add cultural expression elements

• Identify current tensions/changes

Output Persistence

Output Discovery

• Check for context/output-config.md in the project

• If found, look for this skill's entry

• If not found, ask user: "Where should I save settlement designs?"

• Suggest: worldbuilding/settlements/ or explorations/worldbuilding/

Primary Output

• Site analysis - Geographic features and selection rationale

• Morphology - Street patterns, boundaries, districts

• Historical layers - Development phases and crisis responses

• Infrastructure - Water, transport, waste, food systems

• Social geography - Elite, common, marginalized zones

File Naming

Pattern: {settlement-name}-design-{date}.md

Verification (Oracle)

What This Skill Can Verify

• Scale consistency - Do population and institutions match? (High confidence)

• Infrastructure presence - Are essential systems addressed? (High confidence)

• Historical layering - Does settlement show development over time? (Medium confidence)

What Requires Human Judgment

• Story fit - Does settlement create interesting scenes?

• Immersive quality - Does it feel lived-in?

• Navigation clarity - Can readers orient themselves?

Oracle Limitations

• Cannot assess whether settlement serves plot needs

• Cannot predict reader sense of place from descriptions

Feedback Loop

Session Persistence

• Output location: See context/output-config.md

• What to save: Site, morphology, districts, infrastructure, social zones

• Naming pattern: {settlement-name}-design-{date}.md

Cross-Session Learning

• Check for prior settlement work in this world

• Ensure settlements maintain trade/political consistency

• Crisis response patterns inform anti-patterns

Design Constraints

This Skill Assumes

• Settlement exists (even ruins were once settlements)

• Writer wants functional urbanism, not stage sets

• Some historical development has occurred

This Skill Does Not Handle

• Economic systems - Route to: economic-systems

• Political structures - Route to: governance-systems

• Cultural texture - Route to: memetic-depth

• Scene staging - Route to: scene-sequencing

Degradation Signals

• Perfect symmetry without historical disruption

• Every element serving current plot

• Scale mismatch between population and institutions

Reasoning Requirements

Standard Reasoning

• Single district design

• Site selection analysis

• Basic infrastructure mapping

Extended Reasoning (ultrathink)

• Full city design - [Why: all systems interconnect]

• Historical layer development - [Why: tracing centuries of change]

• Multi-settlement regional design - [Why: trade and political networks]

Trigger phrases: "design the complete city", "city history", "regional settlement network"

Execution Strategy

Sequential (Default)

• Site before morphology

• Foundation before growth phases

• Infrastructure before social geography

Parallelizable

• Designing multiple districts

• Research into different urban analogs

Subagent Candidates

Task Agent Type When to Spawn

Historical research general-purpose When modeling on real cities

World consistency check Explore When verifying against existing setting

Context Management

Approximate Token Footprint

• Skill base: ~4k tokens (parameters + typologies)

• With development patterns: ~5k tokens

• With setting adaptations: ~6k tokens

Context Optimization

• Focus on relevant typologies for current settlement

• Implementation process is reference, not required

• Setting adaptations load on-demand

When Context Gets Tight

• Prioritize: Current typology, active parameters

• Defer: Full typology matrix, evolution sequences

• Drop: All setting-specific adaptations not in use

Anti-Patterns

1. Designer's Map Syndrome

Pattern: Creating settlements that look good on a map but don't reflect organic development—perfect grids, symmetrical layouts, convenient district placement. Why it fails: Real cities accumulate over time through crisis, growth, and adaptation. The "designed" appearance signals artificiality. Readers sense something's off even when they can't articulate it. Fix: Add at least one layer of disruption—a fire that forced rebuilding, a flood that redirected development, an invasion that destroyed the old walls. Show the scars of history in the urban fabric.

2. Functional Perfection

Pattern: Every element of the city serves the current plot—the perfect tavern for meetings, the convenient sewer for escapes, districts that exist only when characters visit. Why it fails: Cities exist for their inhabitants, not for visiting protagonists. Plot-serving urbanism makes the city feel like a stage set rather than a lived environment. Fix: Include elements that don't serve the plot but serve the city. Markets for goods the characters don't need. Temples to gods the characters don't worship. The city should feel like it would exist without the story.

3. Scale Implausibility

Pattern: Descriptions implying vastly different scales—a "small town" with specialized districts that would require a population of 50,000, or a "great city" that characters walk across in an hour. Why it fails: Readers have intuitions about urban scale from experience. Contradictions break immersion. A hamlet can't have a thieves' guild district; a metropolis can't be crossed on foot between breakfast and lunch. Fix: Choose a real-world analog for scale reference. Research population densities for your technology level. Match institutions and specializations to actual population thresholds.

4. Missing Infrastructure

Pattern: Rich descriptions of palaces and markets without mentioning where water comes from, where waste goes, or how food arrives. Why it fails: Infrastructure is what makes cities possible. Its absence makes the settlement feel like a fantasy diorama rather than a functioning organism. Fix: Decide how the city handles water, waste, food, and fuel. These systems shape urban form—aqueducts create neighborhoods, markets cluster near gates, tanners locate downriver.

5. Homogeneous Population

Pattern: Every neighborhood has the same feel, the same prosperity level, the same building types. No tension between rich and poor districts, old and new areas, native and immigrant quarters. Why it fails: Urban texture comes from variation and contrast. The interesting parts of cities are the edges where different zones meet, where wealth borders poverty, where old meets new. Fix: Design at least three distinct zones with different characters. Create transition areas where they interact. Show the tensions that arise from proximity.

Integration

Inbound (feeds into this skill)

Skill What it provides

worldbuilding Broader geographic and cultural context

governance-systems Political structures that shape urban form

economic-systems Trade patterns and production that drive settlement growth

belief-systems Religious architecture and sacred geography

Outbound (this skill enables)

Skill What this provides

scene-sequencing Physical spaces for scene staging

positional-revelation Urban roles that create plot access

underdog-unit Physical constraints for institutional outcasts

Complementary

Skill Relationship

economic-systems Settlement design needs economic logic; economic-systems need physical expression in markets and districts

governance-systems Political power expresses itself through urban form; use together for consistency