Peter (Paul Rudd), a real estate broker, takes his girlfriend Zooey (Rashida Jones) to an empty lot
and tells her of his dream of building a new development of "live/work lofts" and a retail center.

He then produces an engagement ring, goes down on one knee, and asks her to marry him.

She accepts his proposal, setting into motion Peter's hunt for a Best Man
for their upcoming wedding - which drives the plot of the movie.

This scene was filmed in a parking lot at the southwest corner of S. Beaudry St. & 4th St.,
on the west edge of downtown Los Angeles (the parking lot for the 333 Beaudry Building),
with the camera looking east towards the downtown skyline.

Peter's house is located at 3959 Franklin Ave, in the Los Feliz section of Los Angeles.

That's at the northeast corner of Franklin Ave & St. George Street.

[ Warning: This is a private home.  Do not trespass on their property, knock on their door,
or do anyything else that might disturb the residents. ]

[Thanks to Owen for finding this one.]

We see Peter drive to work and pull into the parking garage at the fictional Davis-Dunn Realty.

That office building is really at 6565 W. Sunset Blvd, in Hollywood.

It's on the north side of Sunset, a few blocks east of Highland.

(You can see a photo of the entire building here.)

Peter & his fiance go to his parents' house for a family dinner, where an embarrassing discussion
about Peter reveals the fact that he put all of his focus on his girlfriends, and never really had
any close male friends. His father says flatly that Peter never had a best friend.

You'll find this house at 4727 Arcola Avenue, in Toluca Lake (North Hollywood).
That's on the west side of the street, about a mile north of Universal Studios Hollywood.

[ Warning: This is a private home.  Do not trespass on their property, knock on their door,
or do anyything else that might disturb the residents. ]

[Thanks to Lindsay of iamnotastalker.com for finding this one for me.]

Peter, who doesn't have any close male friends, is desperate to meet someone who can be
his Best Man at the wedding, but he has no idea where to start.

We next see him at the gym, talking with his gay brother, Robbie (Andy Samberg),
who gives Peter tips on meeting men (and picks up a guy at the gym in the process).

That gym is the Equinox Fitness Club & Spa, located at 10220 Constellation Blvd, in Century City.

(That's on south side of street, between the Century Plaza Hotel and the MGM tower.)

We next see Peter at the home of Zooey's friend, Denise (above), who talks her husband into
letting the inexperienced Peter play poker with the guys. Later, Peter wins a
beer-drinking contest, only to throw up all over Denise's husband.

That house is located in the Hancock Park neighborhood, at 532 N Las Palmas Ave, Los Angeles.
That's on the east side of the street, just south of Clinton Street.

[ Warning: This is a private home.  Do not trespass on their property, knock on their door,
or do anyything else that might disturb the residents. ]

[Thanks to Owen for finding this one.]

We next see Peter out on his first bad "date" with a potential male friend. They are at a soccer game.

That game was at The Home Depot Center, a stadium at 18400 Avalon Blvd, in Carson, CA.

(The home team, the L.A. Galaxy - Beckham's MLS team - is playing.)

Peter's fiance, Zooey, runs a store called ZHD, with her friends Hailey & Denise,
where they seem to spend most of their time gossiping about poor Peter.

(If you didn't notice, those are the initials of the three girls.)

You'll find that white building at 1626 Silver Lake Blvd, in the Silver Lake district.

(It's on the east side of street, just south of Effie St.)

It's actually a place called Yolk - a hip store selling child's bedding & design stuff.

Peter is trying to sell Lou Ferrigno's house, so he holds an open house.

While there, he meets Sydney (Jason Segel), a free spirit who enjoys crashing open houses.
Peter is impressed with Sydney and eventually calls to ask him out on a "man date".

This palatial home is located at 1 Electra Court, in the hills above Hollywood.

[ Warning: This is a private home.  Do not trespass on their property, knock on their door,
or do anyything else that might disturb the residents. ]

(And no, it doesn't really belong to Lou Ferrigno.)

[Thanks to Owen for finding this one.]

As Peter heads off for his first "date" with Sydney, we are shown a few shots of Venice, California.

First, we see a pair of giant binoculars.

Those famous "binoculars" are actually an office building known as the Chiat-Day Building,
on the east side of the 300 block of Main Street (between Rose Ave & Sunset Ave), in Venice, CA

We next see a shot of a Venice mural.

The mural above, depicting the canals of Venice, is painted on the north side a building
at 500 Main St, Venice at the southeast corner of Main Street & Market Street.