Rahu in the 4th house intensifies your ambitions around home, mother, and material comfort, often bringing an unconventional edge to your domestic life. The overall balance of gain and difficulty depends on Rahu's strength and aspects in your chart.
Benefic Effects
Health
A deep bond with your mother is likely, along with real intelligence and wit.
Business and Job
You are likely to be recognised for your hard work and dedication at your workplace.
Financial
A sound monthly income is likely, along with a rich, comfortable lifestyle and the possibility of sudden monetary gains.
Educational
Your mental sharpness could draw you toward mathematics, and you may gain real knowledge and values from your teachers, along with strong creative skills.
Social
Politics could appeal to you, and words and behaviour may earn you considerable social reputation, along with a genuinely powerful position in society. Your mother is likely to play a constructive role in shaping your character, and family support tends to be strong in times of need, along with a good aesthetic sense and interest in home décor.
Love and Married Life
A satisfying, long-lasting marriage is likely, with both you and your spouse remaining loyal and caring toward each other. You may be able to buy your own home and car, and emotional support from your partner during difficult times is likely.
Malefic Effects
Health
Mental unrest and dilemma are possible, along with occasional jealousy or envy. An unsympathetic or rude streak, excessive possessiveness toward loved ones, frequent emotional outbursts, difficulty controlling anger, and certain chronic illnesses are additional risks.
Business and Job
Occasional laziness at work is possible, and a business partner's tricks could put you at risk.
Financial
A materialistic approach to life is possible, along with the risk of major financial loss in business.
Educational
Concentration in your studies may suffer.
Social
Unethical shortcuts toward your goals are possible, along with the risk of road accidents and sudden negative changes in life. Laziness in your daily routine, high ambition that erodes your moral sense, a constant urge for higher social status, indecisiveness in important moments, and judging people by caste or background are further risks, along with unpredictable parental behaviour, involvement in fraud, encroaching on others' property, orthodox thinking, and an escapist mindset toward responsibility.
Love and Married Life
Your love life could be negatively influenced if the planet is strongly afflicted, bringing insecurity, casual affairs, delayed marriage, and possibly infidelity.
Conclusion
This placement tends to prove more challenging than favourable in most cases, possibly drawing you toward unethical company and financial crisis in business. You may lose close ones due to harshness or a lack of compassion, and false traps are possible, but hard work can still bring great rewards, sudden monetary gains, genuine care for loved ones, and a genuinely luxurious life.