A house is a building that functions as a home.
Yes, prayer is valid in a house which has alcoholic drinks as far as the place of Prostration is Tahir. We should avoid any act which gives others an impression that we approve their drinking alcohol. We are allowed to visit our relatives who keep alcohol at their house with out approving their sinful acts.
It is allowed to take money from non Muslim bank or financial institute for any lawful purpose.
It is not enough to just phone your parents but you must visit them and serve them in every possible way. Their sins are between them and Allah and do not change your responsibilities towards them even if they are non Muslims.
It is mentioned in La'ali al-Akhbar (vol 3, p 413) and attributed to Imam al-Baqir (A) that the angel Jibra'il told the Prophet (S) that the planet Venus (the evening star) would descend on Friday night on the house of the person whom Fatima (A) should marry. The people waited to see who it was, and it was the house of Ali (A).
This narration is provided as part of the explanation of the origins of the tasbih of Fatima al-Zahra (A).
I am personally not aware of any chain of narration for this and therefore, without a chain of narration, it would not be classified as authentic.
Allah knows best.
Yes. Khums is obligatory on us for any amount saved.
If your adult daughters find it difficult to wear full Hijab at home in front of the Non Mahram man, you must protect them from falling in sin of being seem by him with out full Hijab. You must arrange for him another place to live, away from your adult daughters.
It is allowed to do house cleaning at night. If some is sleeping, we should be careful not to disturb his sleep.
The status of the Prophet Muhammad (SAWA) and his Holy Progeny is higher than the status of Ka'bah and any one and any thing created by Allah (SAWA). The Prophet Muhammad (SAWA) is the best and the highest among the creatures of Allah (SWT). His holy Progeny are from him and their status is from his highest status.
We have narrations in Mustadrak al-Wasaa'il (2:484) from the Prophet (SAWA) that the spirits of the believers come back on Fridays near their homes and every one from them will call him family members who are alive: O my family, O my children, O my father, O my mother, O my relatives; have a sympathy on me, may Allah have sympathy on you....
أرواح المؤمنين ليلة الجمعة
2525 / 24 وقال (صلى الله عليه وآله): " ان أرواح المؤمنين تأتي كل جمعة إلى السماء الدنيا بحذاء دورهم وبيوتهم ينادي كل واحد منهم بصوت حزين باكين: يا أهلي، ويا ولدي، ويا أبي، ويا أمي وأقربائي اعطفوا علينا يرحمكم الله بالذي كان في أيدينا والويل والحساب علينا والمنفعة لغيرنا وينادي كل واحد منهم إلى أقربائه: اعطفوا علينا بدرهم أو برغيف أو بكسوة يكسوكم الله من لباس الجنة "، ثم بكى النبي (صلى الله عليه وآله) وبكينا معه، فلم يستطع النبي (صلى الله عليه وآله) أن يتكلم من كثرة بكائه، ثم قال: " أولئك إخوانكم في الدين، فصاروا ترابا رميما، بعد السرور والنعيم فينادون بالويل والثبور على أنفسهم يقولون: يا ويلنا لو أنفقنا ما كان في أيدينا في طاعة الله ورضائه ما كنا نحتاج إليكم فيرجعون بحسرة وندامة، وينادون: أسرعوا صدقة الأموات ".
مستدرك الوسائل-ج٢ ص ٤٨٤
If she is spraying (urinating) on you/your clothing, and you have cat urine on yourself or your clothes, you should wash out the urine before praying. If not, it's not a big deal, but it might be annoying.
Yes it is allowed to have a cat and touch her. Praying Namaz needs your body and cloth clean from the hair of can or any animal which is not permissible to eat. Ayatullah Sistani allows few hairs.
If you need to buy a house for livening in it and not for investment, and you have legally and islamically entered in the purchase agreement but the completion (full payment) was after your date of Khums, then the amount of the completion of the purchase is not under your free ownership because you have a binging agreement to pay. This makes that amount out of Khums calculations of that year because it was already committed for buying a house to live in.