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Perlas Foundation

Disaster-Ready Homestead: The Top 10 Natural Disasters and How to Defend Against Each

A homestead that lasts generations isn’t just a garden and a solar panel. It is a plan for the bad days. At the Perlas Foundation we ranked the ten natural disasters most worth planning for, plus two cosmic ones, with their relevance to Los Angeles and the technology that actually helps. Then we looked at what a family homestead needs to keep running.

Our principle: defense means resilience. Every neighbor is a potential helper. The best tools are cheap, boring and shared.

The top 10 (plus 2)

1. Earthquake (LA risk: very high). Bolt and brace your house to its foundation. Los Angeles has a mandatory soft-story retrofit program for pre-1978 wood-frame buildings. Strap your water heater. Install the MyShake app for ShakeAlert early warnings. (LADBS; California Earthquake Authority.)

2. Wildfire (very high). Keep 100 feet of defensible space, keep the first 5 feet (Zone 0) clear, use ember-resistant vents, pack a go-bag, and run air purifiers for smoke (CAL FIRE).

3. Extreme heat (high). Shade, insulation, white or reflective roofs, cooling centers and passive ventilation. A real-world model: Harare’s Eastgate Centre (architect Mick Pearce with Arup, opened 1996), inspired by termite mounds, uses thermal mass, night flushing and chimney stacks. Arup reports about 90% less energy for heating and cooling than conventional buildings [FACT]. Newer research (King, Ocko & Mahadevan, PNAS, 2015) shows mounds “breathe” mostly through daily temperature swings, but the lesson stands: mass + shade + stack ventilation cools without AC.

4. Drought (high). Store water, use drip irrigation and greywater, and plant drought-tolerant crops (drought.gov). Rain math: 1 inch of rain on 1,000 sq ft of roof gives about 623 gallons.

5. Flood and debris flow (medium, especially below burn scars). Check FEMA flood maps, raise utilities, keep sandbags, and never drive through water.

6. Tsunami (coastal zones). Know your evacuation zone. After strong shaking near the coast, move inland or uphill without waiting for an official alert (tsunami.gov).

7. Hurricane and tropical storm (low to medium). Roof straps, shutters and wind-rated building codes; follow National Hurricane Center forecasts.

8. Tornado (low in LA). FEMA P-361 safe rooms, or an interior-room plan.

9. Volcano and ashfall (low). N95 masks; protect water and engines from ash; follow USGS alerts.

10. Extreme cold (low in LA, high elsewhere). Insulation, safe heat sources and carbon-monoxide alarms (ready.gov).

+1. Solar storm (grid-wide). The 1989 storm blacked out 6 million people in Québec for 9+ hours, and May 2024 brought G5 (extreme) conditions. Grid operators keep spare transformers; households can keep a battery or crystal radio, paper records and spare batteries (NOAA Space Weather Prediction Center).

+2. Asteroid (rare, global). This one is handled at planetary scale, and the news is good. NASA’s DART spacecraft hit the asteroid moonlet Dimorphos on Sept 26, 2022 and shortened its orbit by about 33 minutes, at a cost of about $324.5 million (Planetary Society). ESA’s Hera mission arrives in December 2026 to study the result. NASA’s NEO Surveyor launches no earlier than September 2027. And Apophis will pass about 32,000 km from Earth on April 13, 2029, with no impact risk for at least 100 years.

The homestead behind the plan

SystemReal numbersPractical design
Food landEcology Action: a complete diet on about 4,000 sq ft per person with biointensive methodsFamily of 4: about 16,000 sq ft (0.37 acre) of beds [EST], plus orchard and small animals
WaterFEMA: 1 gallon per person per day for drinking; gardens and animals need much moreRoof catchment, a legal well if available, drip irrigation, greywater
SoilLegumes host Rhizobium bacteria that fix nitrogen; compost returns nutrientsEcology Action’s 60/30/10 split: compost crops, calorie crops, vegetables
AnimalsPasture needs vary hugely with rainfall [EST]Start with chickens and rabbits; a dairy goat before a cow
Seed savingEasiest: tomatoes, beans, peas, lettuceOpen-pollinated varieties; label, dry, store cool and dark
Food storageFermentation, drying, canning, root cellarsLactic fermentation (sauerkraut, kimchi) needs no fridge
Energy100 W solar panel: about 0.4 to 0.6 kWh/day in LA [EST]Solar plus micro-hydro if you have a stream

Useful microbes: hot composting at 55 °C held for days meets the EPA’s pathogen-reduction standard (40 CFR Part 503). Biogas digesters turn manure and food waste into fuel gas, but the gas is explosive and can contain toxic hydrogen sulfide, so build outdoors and by the manual. Black soldier fly larvae turn food waste into animal feed and compost.

Home safety basics (non-violent)

Solid-core doors and deadbolts, motion lights, a small safe, cash in small bills, copies of IDs and deeds on paper and an encrypted USB drive, and sign-ups for local alerts (NotifyLA and Wireless Emergency Alerts). Most of all: know your neighbors. Keep a block list and, if you can, a radio or Meshtastic net.

Your first five moves

  1. Store two weeks of water (56 gallons for a family of four) and food.
  2. Strap the water heater and sign up for MyShake.
  3. Clear Zone 0 (the first 5 feet around your home).
  4. Keep a battery or crystal radio and printed contact lists.
  5. Meet three neighbors and trade skills.

Join the research

We’re building a free Civilization Resilience & Disaster Engineering course and a neighborhood restore drill. Want to test a homestead system, measure a passive-cooled room, or help run a block radio net? Join the Perlas Foundation research circle at perlasfoundation.org or book a 15-minute call at calendar.app.google/YipFae7DNyHKSMUH9. Support the work at perlasfoundation.org/donate. (No charitable status is claimed.)

This is educational content, not engineering, legal or emergency-management advice. Follow your local officials during any emergency.

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