I know there is no way to accurately guess costs of compliance with the tsunami of regs in the PRC....

If you can, please give your best educated guess to remove the rubble, and then construct a moderate home of say 1600 squares. Not a palace, just a place where a family can live comfortably.

i would guess out there, you would be at around $250 a square foot
for basic

There might be a few folks who cannot afford a two million dollar home.

Class 1 – Luxury Single Family Homes
The building cost per square foot for luxury private homes in Los Angeles City ranges from $451.81 per sqft to $692.60 per sqft, with the average being $533.20 per sqft. As the bar chart shows below, bigger homes with a large gross floor area have the lowest building costs per ft2, and smaller homes with a small gross floor area have the highest building costs per ft2. Medium-sized homes are somewhere in between. Generally, the building cost per square foot decreases as the size of the house gets bigger, and increases as the house gets smaller.

Class 2 – Semi Luxury Single Family Homes
The building cost per square foot for semi-luxury private homes in Los Angeles City ranges from $274.59 per sqft to $420.90 per sqft, with the average being $324.04 per sqft. As the bar chart shows below, bigger homes with a large gross floor area have the lowest building costs per ft2, and smaller homes with a small gross floor area have the highest building costs per ft2. Medium-sized homes are somewhere in between. Generally, the building cost per square foot decreases as the size of the house gets bigger, and increases as the house gets smaller.

Class 3 – Best Standard Single Family Homes
The building cost per square foot for best-standard private homes in Los Angeles City ranges from $177.51 per sqft to $269.61 per sqft, with the average being $207.82 per sqft. As the bar chart shows below, bigger homes with a large gross floor area have the lowest building costs per ft2, and smaller homes with a small gross floor area have the highest building costs per ft2. Medium-sized homes are somewhere in between. Generally, the building cost per square foot decreases as the size of the house gets bigger, and increases as the house gets smaller.

Class 4 – Good Standard Single Family Homes
The building cost per square foot for good-standard private homes in Los Angeles City ranges from $129.55 per sqft to $198.66 per sqft, with the average being $152.89 per sqft. As the bar graph shows below, bigger homes with a large gross floor area have the lowest building costs per ft2, and smaller homes with a small gross floor area have the highest building costs per ft2. Medium-sized homes are somewhere in between. Generally, the building cost per square foot decreases as the size of the house gets bigger, and increases as the house gets smaller.

i would guess out there, you would be at around $250 a square foot
for basic

The average house cost in Pacific Palisades is $1.4k/ft and that's the low end for that area. Double that for Malibu.