Talking Clean

Method notes, source analysis, and site-selection practice — written from the measurements. Every figure traces to a named public dataset and can be reproduced on the map or through the API.

What's your non-negotiable? → Free area report → Instant check →

A couple taping up cardboard moving boxes in a bare room, a potted plant on top of the stack

Field brief · Start here

The 28-Day Relocation Check

One week on the ground, one in the public record, one on paper, one to decide in person. Hostile-hour visits, utility water reports, transmitter registries, radon classes, the due-diligence method most buyers skip.

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Data atlas

Rankings computed from the live grid, every figure traceable to a public dataset, reproducible on the map or through the API.

A stream running clear over pale granite boulders in a pine gorge

Where the Water Is Softest

15,379 measured cells ranked by hardness, the soft belt traces the granite, from Agder to the Piedmont.

Method & practice

How to turn a whole map into a shortlist you can defend.

A folded topographic map on a wooden desk with a brass compass, a coffee cup and a technical pen

Reading a Cell Like an Analyst

The 15-minute routine (overview, layers, report, export, verdict) that turns a place into a decision you can defend.

Farmland seen from a plane window through broken cloud, field boundaries visible below

From 897,663 Cells to a Shortlist of Five

Disqualify on your non-negotiables first, then rank: why filter order beats browsing.

A person writing on a printed sheet at a desk in raking sunlight

The Threshold Table: Your Non-Negotiables

Set a defensible pass/fail line per factor, anchored to WHO, EU, EPA and USGS standards.

A hand lifting a coloured pin out of a tub over a printed world map laid flat on a table

Comparing Two Countries on the Numbers

National averages lie; the best cell in a "bad" country can beat the worst in a "good" one.

A steep valley and river seen through a window frame, the room reflected in the glass

Ranking a Place You've Never Seen

When you can live anywhere, constraints-first turns the infinite map into a ranked shortlist.

Sunlight through net curtains in a rented flat, a bag on the table and a kitchen counter to one side

Rent Before You Buy: A Data Trial Run

What to measure yourself on site (radon, indoor PM2.5, 3 a.m. noise) and why in the worst season.

A large grey shingled house with white trim and bay windows, a pink flowering tree in the garden

For professionals

Citation-Grade Due Diligence for Real Estate

Environmental DD that survives a client challenge, every figure traceable to a public source.

A single white farmhouse on a green ridge behind a wire fence, telegraph poles off to the left

The Habitability Score, Explained

How composite scoring works; normalising, weighting by your values, and why no single number is enough.

Environmental briefs

One factor at a time — the mechanism, the public thresholds, and how to read it.

A high-rise city skyline seen through blue-grey haze, the hills behind it barely visible

Environmental brief

Air Quality at Your Postcode

Why a green daily AQI hides a bad annual mean, and how rural valleys trap particulates.

The ochre-rendered corner of a house at ground level, its windows just above the soil line

Environmental brief

Radon: The Postcode Lottery

The invisible, geology-driven gas no national dataset captures for your exact home.

A black composite kitchen sink with two brushed-steel taps and a soap dispenser

Environmental brief

Water Hardness & What It Does to Pipes

USGS classes, the Langelier index, and why soft acidic water is the real corrosion risk.

The head of a mobile mast crowded with panel antennas and cabling against a cloudy sky

Environmental brief

EMF: Living Near Towers, Calmly

The inverse-square law does most of the reassuring. ICNIRP levels and what "IARC 2B" means.

A dim bedroom at night with a single bedside lamp lit beside an upholstered headboard

Environmental brief

The Night-Noise Map

WHO's 40 dB night line, why decibels are logarithmic, and the noise you never wake for.

A wide-body airliner passing low over a residential rooftop and an overhead cable

Environmental brief

Flight Paths & the Quiet Neighbourhood

Overflight runs in corridors, so the quiet house can sit close to a runway.

A dense star field above a silhouetted treeline and low ridge, no artificial light in frame

Environmental brief

Light Pollution & Sleep

The Bortle scale, satellite night-lights, and blue light's grip on your melatonin.

Smoke rising off a wooded ridge above houses and drifting across the valley

Environmental brief

Wildfire Smoke Drift Zones

You don't need to be near the fire, smoke PM2.5 travels thousands of kilometres.

One white blossom open on a fruit-tree branch with unopened buds behind it

Environmental brief

Pollen, Mould & the Allergy Calendar

Tree, grass and weed pollen through the year, and the humidity line where mould takes hold.

A white sun low over a city skyline, the whole sky burnt orange

Environmental brief

Heat Domes & Choosing Cool Ground

Urban heat islands, the wet-bulb limit, and elevation as free air conditioning.

A flooded meadow with a barbed-wire fence half under water and bare trees standing in it

Environmental brief

The One-in-a-Hundred Floodplain

A 1% annual chance compounds to roughly one-in-four over a 30-year mortgage.

A steep sea cliff dropping into deep blue water, bare rock exposed where the slope has slipped away

Environmental brief

Coastal Erosion & the Sea View

The Bruun rule: a small sea-level rise means a much larger shoreline retreat.

Dry ground cracked into a network of fissures, seen close up from above

Environmental brief

Earthquake Risk & Bolting Down

Ground acceleration vs what you feel, and the cheap retrofit that pays for itself.

Dense dark conifer forest photographed straight down from the air, the canopy unbroken

Environmental brief

Forest Loss & Tree-Cover Change

What local canopy quietly buys you: cooler streets, cleaner air, calmer stormwater.

Steel columns, stacks and pipework of a chemical plant under a flat grey sky

Environmental brief

Industrial Sites & "Cancer Clusters"

Why most apparent clusters fail scrutiny: while pollutant proximity stays measurable.

Electrified railway track running dead straight through open countryside under a blue sky

Environmental brief

Pipeline & Railway Danger Zones

Potential-impact radii and hazmat corridors, public record, invisible to most buyers.

Two high-voltage pylons and their lines silhouetted against a pink dusk sky

Environmental brief

Grid Reliability & Blackouts

SAIDI and SAIFI decoded, and why a radial rural feeder fails where a meshed grid rides through.

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