fresheners. >> it's macy's fourth of july sale. get 25% off your macy's card. >> number one in just 60 seconds. good evening. thank you for joining us on this holiday weekend to. night, we're going to take you inside some mansions that come with sequelly giant price tags. they're sparking an unexpected dose of drama. abc's brandi hitt has the update. >> there are 13 bedrooms. there is about 20 bathrooms in total. >> wow. >> make a real else state developer, mohamed addid has built homes for the uber rich. such as this woman showcased on bravo's real housewives of beverly hills featuring ex-wife yolonda foster and daughter gigi adid. >> we brought in the olive trees. >> these days he is not making many friends in beverly hills or exclusive belaire. >> this is one of the medium sized ones. this is about, 30,000 square feet. >> reporter: high end developers seem to be done with mega mansions tearing them down for the giga mansions and jennifer aniston whose house is 8,500 square feet are fighting back voicing outrage to city officials. the very idea that a building of 90,000 square feet can be called a home seems at the least a significant distortion of building codes. this 50,000 square foot mansion built and lived in by hadid has a 300 seat ballroom turkish bath large infinity pool and 5,000 square foot guest suite. >> why build homes this size this big? >> there is a need for it. and you have a customers asking for it. >> reporter: the ultrarich living richer. he says a new generation of global billionaires is driving this construction boom. >> this is not your typical in-home theater. >> reporter: and they want it all. >> they expect to have a theater in their, in these mansions from 20 seats to 50 seats or 70 seats. >> reporter: what is the number one amen debuyers are looking for when they are purchasing a house of this magnitude? >> entertainment area. they want to have a splash to have 250 people at a party, need to have several bar areas, an outdoor area, something specific about a house that is different thanany body else. >> outdoor landscaping feels like a resort swimming pool that stand out. maybe two or three and the best location. luxury mansions soaring beyond 20,000 feet are popping up on street after street. some 40,000 square feet. and some reaching a staggering 90,000 square feet. bigger than the white house and taj mahal combined. this else skate lion gate boasts a 3,000 square foot master suite, three living rooms and salt water pool and sold for more than $46 million. to some this giga construction seems more like a giga invasion. >> brandi this is the backyard. the wonderful part about this house. >> reporter: just yard from entertainment attorney's front door this 30,000 square foot wall of glass steel and cement is being developed by you guessed it mohamed hadid. >> do you feel like he is invading your privacy? >> i feel the privacy is completely and totally gone. >> reporter: for 15 years he lived a quiet life tucked away in the hills until hadid bought the house above him tore it down and began excavating soil from the hillside. what do you see when you look up there? >> personally i see the star ship enterprise. and i get very angry also. >> reporter: what is your biggest concern? >> biggest concern is a combination of the total invasion of privacy, the total disregard, which i believe mohamed hadid has for the building code and for the safety of living beneath it. >> reporter: you think the house could end up in your property? >> i think there is clearly the chance. >> reporter: the city of los angeles is not happy either. they issued a stop work order after inspectors found that hadid added unapproved features to the house including this underground in-home theater. >> reporter: you had your permits revoked and stop order on construction. >> correct. >> reporter: why was that? >> well the neighbor have complaint to the city and they decided that -- they want to look into it. we got our permits correctly. >> reporter: you can see the ocean from here. >> you can see, it is very kind of modern home. >> reporter: hadid showed us the property from his perspective where you can see the neighbor's house directly below. >> who ever is going to live here is not going to stand here and look down. he can do something with that. put shrubs. >> reporter: since our story first aired. hadid has gone back to approved building plans. his attorney telling us it will be simpler to remove the add-ons and have the house comply with the original set of plans so the client can finish the project. when it is finished this giga mansion will have two wine cellars, a moving bar that swivels and wrap-around infinity pool. >> you have the people that have the yacht, the plane and the house in santorini, buying a house in l.a. >> reporter: real estate expert david cramer says the high-end building boom started with the sale of famed tv producer aaron spelling's 56,000 square foot home. >> people saw the reality of we have buyers here. >> reporter: he sold the spelling manor for $85 million and says it opened the floodgates for larger luxurious homes. who can afford these homes? >> everyone thinks it is foreign buyers. it is everybody. local. entertainment. hedge fund. banking. computer. definitely. technology people. and then a lot of foreign buyers, probably 30% to 40% are foreign buyers. >> reporter: all this development comes at a price. say some irate neighbors. pointing to the deaths of two l.a. officers killed by construction vehicle. >> here is another truck. >> here as it nothernother truck. >> the former ceo of ticket ticketmaster founded a neighborhood alliance. cringes at every large truck in his neighborhood. >> reporter: is this a regular occur nsrence on your street? there are people at hem that will say this is a fight of millionaires against billionaires. >> there is always someone with more. we want them building it safe. >> 2, 30. the camper. >> reporter: a mother of two is a member of the neighborhood alliance. she became sort of a modern day video vigilante, over a massive 90,000 square foot property up the road from her. >> hi are you at the construction site up here? there is wildlife here. and that's a way it used to be very peaceful and quiet. >> reporter: now you have a truck, two trucks three trucks going through. >> yeah. >> reporter: levinson's neighbors, 8,000 and 10,000 square foot homes are now some of the homes considered tear downs. >> that is a million dollar view? >> $10 million view. >> reporter: but this -- is what neighbors are viewing with so many giga mansions going up. >> they would come down in convoys like freight train. >> reporter: now some are waiting for the ultrarich real estate bubble to burst. do you think you will ever have peace and quiet again? >> not for many many many years. >> reporter: until then if you can afford a house of this magnitude and want to throw a party for friends, mohamed hadid has a few idea. >> this is a wine cellar. >> reporter: how many bottles of wines? >> this is a 5,000 bottle of wine wine cellar. i haven't counted them lately. >> reporter: for "nightline," brandi hitt in los angeles. >> next in a country where untold numbers of people are actively preparing for some kind of apocalypse there is one man who says you might as well survive the cataclysm in style. and clearer skin. this is my body of proof that i can fight psoriatic arthritis from the inside out ...with humira. humira works by targeting and helping to block a specific source of inflammation that contributes to both joint and skin symptoms. it's proven to help relieve pain stop further joint damage and clear skin in many adults. doctors have been prescribing humira for nearly 10 years. humira can lower your ability to fight infections, including tuberculosis serious,sometimes fatal infections and cancers, including lymphoma, have happened, as have blood, liver and nervous system problems, serious allergic reactions and new or worsening heart failure. before treatment get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common and if you've had tb hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. visit humira.com and talk to your rheumatologist. humira. this is a body of proof! this kid makes stains like crazy so we got our new he washing machine but it took forever turns out it wasn't the machine, it was our detergent. so we switched to tide turbo clean. now we get way cleaner clothes way faster he turbo clean. 6x the cleaning power in ½ the time if you're suffering from constipation or irregularity powders may take days to work. for gentle overnight relief, try dulcolax laxative tablets. ducolax provides gentle overnight relief, unlike miralax that can take up to 3 days. dulcolax, designed for dependable relief. introducing the first ever gummy multivitamin from centrum. a complete, and tasty new way to support... your energy... immunity... and metabolism like never before. centrum multigummies. see gummies in a whole new light. i want my foyer to smell more like a foyer. i want his bedroom to smell like he's away at boarding school. surround yourself with up to 6 hours of luxurious, long-lasting scents... ...introducing new unstopables air refresher. let's head deep underground for an up close look at how some of the richest people in america are coping with their deepest fears about the end of the world. whether a nuclear meltdown world war iii, if you have got the cash you can ride out the apocalypse in serious luxury. abc's david wright got invited for one very strange sleepover. >> reporter: in a world full of threats. it can be hard not to think society we take for granted would collapse in a heartbeat. we even entertain ourselves with that notion. >> i never wanted any of this. >> in "the hunger games" catness and her allies live in an old nuclear missile silo. turns out real life is not so far off from the movies. we have just landed in wichita, kansas. we are headed to a place where they take doomsday very seriously. part of the secret to surviving the apocalypse is being completely off the grid. in the middle of nowhere, checkpoint here. yep. we have arrived. >> hi how are you? i hope we are in the right place. we're with "nightline." >> the guard post bristling with guns. inside a warm welcome. >> welcome to raven ridge of kansas. >> reporter: raven's ridge of kansas site 11 former atlas intercontinental ballistic missile silo. >> each door weighs 16,000 pounds. >> reporter: a structure the u.s. government built with doomsday in mind. and which larry hall repurposed imagining a different doomsday. it is a luxury condo complex deep underground. >> we can go to the bottom in 29 seconds. 15 stories down. >> you are entering the sick bay. >> get you settled into your rooms. we are here for a sleepover. >> this will be your digs for tonight. your average bed and breakfast is not heavily fortified. >> all extearwalls are nine feet. a luxury condo, from $1 million to $5 million a pop. >> i'll show you the pool. >> i didn't bring my swimsuit. it's 85 in the pool area. so humid it fogs up the camera. walls painted with beach scenes. even a water fall. >> feels like we are not in kansas anymore. >> larry's survival condos are the high end of a booming business. more than 3 million americans are thought to be committed preppers. most stockpiling supplies in more modest settings. >> keep this packed at all times? >> all times. >> disaster preparedness estimated to be a $5 million a year industry. >> ask yourself are you prepared? >> reporter: there are companies that cater to the apocalypse. >> introducing wise company gourmet emergency food. >> reporter: survivalism for the martha stewart set. tonight at raven ridge it is even better than that. after dinner it's done to the theater for a movie. this really kind of the ultimate man cave. >> it really is. especially because there is a bar next door. >> reporter: more than 400 to choose from. we go with the book of eli in keeping with the theme. >> this place across the street they got any water? >> i feel like i could sleep through a nuclear bomb. good night. my alarm clock says it is 6:45 in the morning. so it should be light outside or getting light soon. but you would never know it in here. pl of water. decent pressure to start the day off with a nice hot shower. not going to run out of shampoo in here. industrial size dial built for a man. the contractor who helped build this place has been living here on and off more than a year. it is almost like you are living on another planet in here? it could be. or on a space ship that's traveling to some far, far galaxy. >> reporter: the condos themselves have personal touches. for one family hers and his bunkbeds. for the kids. in another the gas fireplace features stones imported from the owner's home town. all of them have virtual windows. flat screen tv's so you don't feel look you are underground. >> you can choose your own view. all of them have high tech japanese toilet seats. >> to have enough toilet paper for 75 people would take a floor to store toilet paper. that's a necessity. >> reporter: even a place for your dog to do his business. the survival condos pet friendly. >> take your pet with you. >> dogs or cats. our psychologist strongly advised it. a very stablizing thing to have. >> reporter: a schoolroom where the kids can continue their studies even when it is not safe to go outside. >> who is the teacher? >> you, me the other owners. >> reporter: that's part of the deal with the condo association. during a lockdown everyone would work a four-hour shift if not in the classroom, then maybe in the store, or the green house, where they'll farm fish and or gaining vegetables. >> we will have lettuce, celery, carrots, onions blueberries, strawberries kale. >> reporter: the thing you have to keep reminding yourself is why this place is here? and why it is bristling with security measures including air filters to neutralize a nuclear biological or chemical attack. an extensive armory with plenty of guns. >> you are saying this place is fort knox? >> it is. >> reporter: outside it is crystal clear. this place is a fortress. oh, and itch youf you are wondering how will the elevators work when doomsday knocks out the power grid. even at $1 million to $5 million a pop. the condos are sold out. larry took us to another silo where he is just getting started. >> definite fixer upper. >> reporter: deep underground you get a sense what it was like the last time americans felt in imminent danger. >> this is like the wreck of the titanic. it was sealed. >> reporter: when was it last operational? >> 1967. >> reporter: standing here you could imagine the buzz of the fluorescent lights as guys in crew cuts and mis waited for the launch order. short, treacherous walk down the connecting tube. >> watch your step. a much larger tube. over there is where launch controllers would sit with keys and code waiting for the order. this is the missile silo. it is a deep, deep hole. listen to the echo. hello. a long way down. a place built with the apocalypse in mind. today the threat may be different, but the fear remains. the good news is for some the accommodations will be a lot more plush. i'm david wright for "nightline" at raven's ridge, kansas. >> our thanks to david wright. we will be right back. dawn. new bounty with dawn. what a novel idea! just rinse and wring so you can blast right through tough messes and pick up more. huh aren't we clever.... thanks m'aam. look how much easier new bounty with dawn cleans this gooey mess versus soap and a sponge. thank you! new bounty with dawn. available in the paper towel aisle. obviously! tonight we have met millionaires with money to burn on living quarters. this might be the most extreme of all. these people are making do with less, much less. for our new collaboration with the bbc we got an inside glimpse into microapartments. >> do you think people don't need as much space as they think they do? >> you can get by with a lot less. and my life functions as a there mall person's life in this tiny apartment. >> you can watch the whole story on our new youtube channel, times two. thank you for watching abc news. we're online 24/7 on our "nightline" facebook page and abcnews.com. good night, everybody. have a very happy birthday america, from our family to yours. first of all michael and geoffrey are so cute. ha ha! thank you. very friendly and helpful and all the kids love them i love them. well, thank k you. they are very special, and they're so excited about doing a comedy routine at the winter concert. it's so cute! you must be very proud. oh, yeah. winter concert? yeah, ray. you know about that. oh, yeah, i know about that. i just can't believe it's winter already. he's been practicing their routine with them. he's this totally involved dad you know? yeah, and if you need any help telling them apart i'm your guy. well, tually it's gotten easier. but there are some... differences. yeah. you start seeing it around the eyes, right? sure. at, and then there are some other...diff-- well, let's see. um... these are the pre-k assessment forms and here are some numbers, and they both know their numbers but they each got the "9" wrong. they said it was a "6." that's a common error. but...you know i guess, if you showed it to 'em like this... right?t? i mean, it could've been upside down. uh, no. we show it to 'em like this. but don't worry, it's a-- common. it's a common error. and, uh...well here are some letters, and they both know all their letters-- well, i do that with them every day. ♪ a, b, c, d-- ♪ well, you know that song. ha ha ha! you ok?

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