Indore Nagar Nigam — Construction Monitor

Legend

Change = built-up gain since the early-2023 baseline (Jan–Feb 2023). Min cluster ≈ 200 m² (2 px). Red shade = cluster size.

New-built ≥ 2 ha (large)

New-built 0.5–2 ha (medium)

New-built < 0.5 ha (small)

Needs review (large cluster, few footprints)

Land cleared / under development

Boundaries

Ward boundary (85 IMC wards)

Selected ward (zoom target)

AOI — scanned extent (wards + buffer)

Buildings

Buildings 2024 — footprints (vector)

Buildings 2024 — new vs 2023

Buildings 2017–2023 (raster)

Imagery ▾

Sentinel-2 RGB monthly

Satellite true-colour photo of Indore for the month you pick on the left/right map selectors. Drag the slider below to fade it in/out over the basemap.

Opacity

How the monthly photo is built

Each frame is a per-pixel median of every Sentinel-2 pass over Indore that month (bands B4/B3/B2 = red/green/blue, 10 m/pixel). The median quietly drops cloud and shadow pixels. Cloud filter: scenes with <30% cloud; relaxed to <60% / <90% for monsoon months (Jul–Sep) when clear scenes are scarce, so those frames are noisier.

Swipe ON: the photo chosen on the left selector shows left of the divider, the right selector shows right of it — drag the cyan divider to compare. Swipe OFF: only the left photo is shown, full-screen.

Buildings ▾

Show buildings layer

Year:

Highlight only NEW since previous year

Opacity

2017–2023: Google's annual building maps (a built/not-built grid for each year).
2024: Google's detailed building-footprint data — actual building outlines (pick a ward to load them).
The 2024 source is far more complete than the older yearly maps, so its numbers jump — see the Excel report's Methodology sheet.

Change Detection ▾

New-built clusters — confirmed roofs (red)

Land cleared / under development (amber)

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Red = land Dynamic World now labels built but didn't in 2024 — confirmed roofs. Amber = land now bare-or-built but not in 2024 (and not already red) — i.e. cleared ground / foundations / shells, a leading indicator that catches sites before roofs go up (it also flags some genuinely fallow farmland, so treat amber as a watch-list).

Scanned the 85 wards + a 3 km fringe (~28.6 × 27 km). Most clusters sit on Indore's east / peri-urban fringe — that's where open land is converting to built-up (Super Corridor, Bicholi, Mundala, Bilawali). Redevelopment of already-built plots in the core stays "built→built" and so isn't flagged by either layer. A 3 km fringe just reaches a Sentinel-2 / Dynamic-World tile seam south of the city, so the odd large blob in the far south is likely a seam artefact rather than real construction.

How clusters are found

From Google Dynamic World's per-pixel land-cover labels we build "mode" masks for two windows — baseline = early 2023 (Jan–Feb 2023), current = the rolling last 90 days — a pixel "is X" in a window if ≥50% of that window's cloud-free scenes labelled it X. The change must also still be built in the most-recent 30 days.

Red (new-built): built now, not built in early 2023.
Amber (cleared / under development): built or bare now, but neither in early 2023 — minus the red pixels. Bare-ground is the earliest land-cover signature of a site (cleared plot, foundations, bare shell), so amber catches activity before roofs exist; it also catches farmland that's just fallow this season, hence "watch-list".

Each layer: connected blobs of ≥5 pixels (~500 m²) survive a noise filter and become polygons, spatially joined to the ward they fall in.

What neither layer catches: redevelopment of an already-built plot (stays built→built), and infill plots smaller than ~500 m². For those, use the per-building footprint data (Houses sheet in the Excel) or just play the monthly imagery and look.

Reports ▾

Full ward-level workbook (11 sheets: Overview · Ward Summary · Building Area by Year · Building Analysis · Building Counts · Change Polygons · Houses (sample ward) · Shops & POIs (OSM) · Google vs OpenStreetMap · Growth Rankings · Methodology). Rebuilt each run.

↓ Excel report (.xlsx) — all wards, all years

CSVs scoped to the current ward selection.

About ▾

Indore Nagar Nigam — Satellite Construction Monitor — built 02 Jul 2026.

Coverage: 85 Indore Municipal wards plus a 4 km buffer (scanned AOI 31 × 29 km).
Imagery: Sentinel-2 monthly cloud-free composites, 10 m resolution.
Buildings: Google's annual building maps (2017–2023) + Google's detailed building footprints (2024). The 2024 source is more complete, so its numbers jump — details on the Excel report's Methodology sheet.
Change detection: Google Dynamic World land-cover — early-2023 baseline (Jan–Feb 2023) vs the rolling last 90 days, clusters ≥200 m², scanned over the 85 wards + a 3 km fringe. Two layers: new-built (confirmed roofs) and land cleared / under development (newly bare-or-built — a leading indicator that also picks up some fallow farmland).

6062 new-built clusters (5087.9 ha) + 1519 cleared/under-development clusters (603.3 ha) since early 2023. Refreshes monthly on the 2nd via cron.