is it illegal for a landlord to reject an opposite sex domestic partner on my lease?

I would say yes since you signed the original lease alone..it is up to the landlord. If you have signed a legally binding lease you cannot have another person move in with you, your option is to move, but then you will be breaking the lease and will probably be penalized.

The Fair Housing Act protects you from discrimination based on familial status -- but you do not meet the definition of family until you marry. Absent an Oregon law which protects you, the landlord may be within his rights to tell you to boot this guy.

The first thing you should do is read EVERY WORD of your lease. Commonly, there is a boilerplate clause limiting the number of days that a "guest" may stay. If he isn't on the lease, he's a guest. Start there. There's no "if you really really LOOOOOOVE your guest he can stay forever" clause.

I am NOT an attorney, just a paralegal...this is not legal advice, I am just some guy from the Internet. Void where prohibited, caveat emptor, e pluribus unum and all that.

First you need to find out why he would reject him. Is it due to his application, finances. Then you can address the rest. A landlord has the right to set the rules. However, check your lease for your guidelines on living there. He may not be opposed to you living together but have other rationale. Keep in mind. Many landlords ask for an increase in rent when there are two people renting. Don't jump the gun on this. He just needs to check your friend out. I don't know that it is a legal issue for either of you though. Best of luck my friend.

It depends on the local laws.

If you lived in Iran and complained about this to the local authorities, you'd both be whipped about 100 times each and then hung.

Pastor Art

He may be rejected, all people have a chance of being rejected, you cannot assume that it's because he is of the opposite sex, and your partner.

No, the landlord should not send him out because your the one living in there and you can invite anyone you want.

No one can keep you from the one you love if it was true now one will be happy each with other.

It is illegal, but he may find some legitimate way to not to approve him which maybe hard to prove due to discrimination

a bad credit check etc.. Plus even if you do get the right to move there it probably wouldn't be a pleasant environment.

But that's up to you. illegal nonetheless.

No I don't think it's illegal. It all depends on their rules. Like since you aren't married they might make you get an apartment with 2 bedrooms (gay yes I know).

It's his property. He can put anything into the lease he wants. If you don't like it, move.

File against him in Court. He is denying you your equal rights to be what you wish to be.File discrimination charges against this Man.

A touchy situation yet it can be resolved by a Judge.