Settlement Layout for 150 People

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Settlement Layout for 150 People

150 is not an arbitrary number. Anthropological research (Dunbar’s number) suggests that ~150 is the maximum group size where everyone can maintain personal relationships with everyone else. Beyond this, you need formal institutions and hierarchies. At 150 and below, governance can remain personal and direct.

This guide provides a framework for organizing a settlement of 100-150 people into functional zones that minimize conflict, maximize efficiency, and provide safety.

The Five Zones

A well-organized settlement separates incompatible activities while keeping related activities close. Think of five concentric or adjacent zones:

Zone 1: Communal Core

The social and administrative heart of the settlement:

  • community-gathering-hall — the largest building, centrally located
  • Communal kitchen/dining area (may be part of the gathering hall)
  • Well or water point — the primary water distribution point
  • Open plaza or green — 200-400 m² of open space for markets, celebrations, children’s play, and emergency assembly
  • Medical station — in or adjacent to the gathering hall

Location: Geographic center of the residential area, accessible from all homes within 2-3 minutes’ walk.

Zone 2: Residential

Housing for families and individuals. For 150 people organized in typical family groups, expect 30-40 housing units.

Spacing: Each housing unit should have:

  • Minimum 5m clear space between buildings (fire safety). See fire-prevention-settlements
  • A private outdoor area (30-50 m²) for household tasks, small gardens, children’s play
  • Clear access to a path leading to the communal core

Arrangement patterns:

  • Cluster: Groups of 4-8 houses around a shared courtyard. Clusters of related families or work teams. Provides semi-private communal space and natural mutual aid
  • Linear: Houses along a main path or street. Easier infrastructure (water, paths) but less communal
  • Organic: Houses placed based on terrain, each in the best micro-site. Most land-efficient but harder to service with infrastructure

Recommended: The cluster model balances community and privacy. Four clusters of 8-10 houses each, arranged around the communal core.

Zone 3: Agricultural

The largest zone by area. For 150 people, you need approximately:

  • 30-40 hectares of cropland (depending on climate and crop types)
  • 10-20 hectares of pasture (if keeping cattle or large livestock)
  • 2-5 hectares of gardens (intensive vegetable production near homes)
  • Orchards — as much as possible, integrated along paths and boundaries

Location: Surrounding the residential zone. Intensive gardens closest to homes (daily tending needed). Field crops further out (weekly tending). Pasture at the periphery.

Livestock areas:

  • Barns and livestock housing between the residential zone and pasture
  • Downwind and downhill from residential areas (odor and runoff management)
  • Close enough for daily chores (milking, egg collection) but not adjacent to sleeping areas

Zone 4: Industrial

Workshops, processing areas, and any activity that produces noise, smoke, dust, or fire risk.

  • Forge and workshops — smithy, carpentry, pottery
  • Processing: Mill, threshing floor, slaughterhouse, tannery
  • Fuel storage: Woodpile, charcoal storage

Location: Downwind from residential and communal zones. At least 30m from nearest house. Along a cart-accessible path from both the residential zone and agricultural areas. Close to water supply (forge quenching, clay processing).

Zone 5: Storage & Utilities

Location: Between agricultural and residential zones for convenient access. Root cellars and ice houses on north-facing slopes where possible.

Path Network

Paths are the circulatory system of the settlement. Design them intentionally:

Primary paths (2-3m wide): Connect the five zones. Wide enough for a cart or two people with loads to pass. These carry the most traffic.

Secondary paths (1-1.5m wide): Connect individual houses to primary paths. Narrower, lower traffic.

Surfacing: In wet climates, unsurfaced paths become mud bogs. Surface primary paths with:

  • Gravel (best for durability and drainage)
  • Wood chips (comfortable, needs replacing annually)
  • Flat stones or salvaged pavers (permanent but labor-intensive)
  • Raised boardwalks in swampy areas

Drainage: Crown paths (slightly higher in the center) so water drains to the sides. Install drainage ditches alongside paths in areas with poor drainage.

Water Distribution

The gravity-fed-plumbing system should reach every zone:

  • Communal water point at the core — the social hub where people meet while collecting water
  • Livestock water piped directly to barn area troughs
  • Workshop water for forge, pottery, and processing
  • Fire fighting water points — see fire-prevention-settlements. At least one pressurized water source in each zone

Fire Safety Integration

Fire planning is inseparable from layout planning:

  • 5m minimum between residential buildings, 10m minimum between residential and industrial zones
  • Fire breaks — maintained clear strips 5-10m wide between building clusters. Can double as paths, gardens, or play areas
  • No flammable storage within 10m of any building
  • Water barrels (200L+) at every building cluster
  • Emergency assembly point at the communal green — large enough for the entire population

Sanitation

Sanitation infrastructure must be designed into the layout, not added afterward:

  • Composting toilets — minimum of one per household, with collection points for community-scale composting
  • Greywater systems — each housing cluster’s greywater routes to a shared reed bed, which irrigates nearby gardens
  • Waste separation — designated areas for organic waste (composting), salvageable materials (storage), and true waste (burial pit, downhill and downwind)
  • All waste and sanitation infrastructure downhill and downwind from water sources and residential areas

Growth Planning

A settlement of 50 will grow to 100, then 150, then beyond. Plan for this:

Phase 1 (founding, 20-50 people): Build the communal core, first housing cluster, basic agricultural infrastructure, one workshop.

Phase 2 (growing, 50-100 people): Add housing clusters, expand agriculture, build storage buildings, develop water system.

Phase 3 (established, 100-150 people): Complete all zones, add specialized buildings (medical, education, defense), formalize paths and infrastructure.

Expansion corridors: Leave at least one direction of growth open—don’t surround the settlement with fixed infrastructure (orchards, permanent fencing) that can’t be moved when you need to expand residential or agricultural areas.

Common Layout Mistakes

  • Building too dense — seems efficient but creates fire risk, sanitation problems, and social friction
  • Ignoring wind — putting workshops or livestock upwind makes the entire settlement unpleasant
  • No separation of functions — a forge next to a school creates noise problems. A latrine next to a well creates health problems
  • No room to grow — if the settlement is surrounded by its own fields on all sides, expansion requires relocating agriculture
  • Ignoring terrain — building on the flat valley floor instead of the south-facing slope wastes passive solar potential and invites flooding