Master Plan
Master Plan sits in the MasterPlanning phase of CityOS — AJG's synthesis of municipal-administration practice across 1,584 tracked cities. Master Plan (also: General Plan, City Development Plan, Comprehensive Plan) is the statutory long-term blueprint guiding land use, density, infrastructure, and growth boundaries. Updated every 5-10 years; legally binding for permits. Mumbai DCPR 2034, Delhi MPD-2041, London Plan 2021, Singapore Concept Plan are notable examples. Scale: Citywide; 20-30 yr horizon. Time horizon: 3-5 yr to draft; 5-10 yr revision cycle. Multilateral coverage: 197 countries × 1,584 cities (T1/T2/T3).
Primary actors
8-Slice Lifecycle Map
Every master plan decision touches each of these lifecycle slices. Click through to deep-dive each.
Other MasterPlanning-phase categories
All 6 CityOS phases
Need to apply master plan frameworks to a specific city, project, or comparison? AJG's 1,584-city dataset surfaces benchmarks and reference implementations.
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Frequently asked about Master Plan
What is the typical scale of Master Plan?
Citywide; 20-30 yr horizon
How long does master plan take?
3-5 yr to draft; 5-10 yr revision cycle
Who are the primary actors involved?
planning-authority, mayor-council, public-participation, state-central-govt.
Does Master Plan apply across all 197 countries?
CityOS is multilateral by construction. Frameworks adapt to legal, fiscal, and institutional context — but the structural slices are universal. City-specific applications surface via /os/cityos/country/{country}/.
How does this relate to AJG's broader platform?
CityOS complements TradeOS (operations) and GovOS (rules) by adding the urban-management lens. Cross-OS quadruples — DealOS × TradeOS × GovOS × CityOS — surface strategic + operational + regulatory + spatial views together.