What to watch out when buying a house?

Asked by: Jaron Hettinger  |  Last update: April 28, 2026
Score: 5/5 (34 votes)

When buying a house, watch out for major structural issues (foundation cracks, roof damage), outdated/failing systems (HVAC, plumbing, electrical), hidden problems (water damage, pests, mold), and red flags in the neighborhood (vacant homes, noise, commute issues), all while carefully assessing your true budget, including ongoing costs like taxes, insurance, and utilities, beyond the mortgage. A professional inspection is crucial for uncovering hidden defects.

What are red flags when buying a house?

Water stains and mold are red flags when buying a home. Not only can mold have implications for your health, it could indicate a bigger problem with the house. If you see either of them, look into the cause of the stain, because a new roof or new plumbing could set you back a significant amount of money.

What is the biggest red flag in a home inspection?

The biggest home inspection red flags involve costly structural, water, electrical, and pest issues, including foundation cracks, sloping floors, major water intrusion (roof/basement), active leaks, outdated/unsafe electrical systems (knob & tube, aluminum wiring, overloaded panels), and pest infestations (termites, rodents), as these threaten safety and incur significant repair bills. Fresh paint, strong odors, and improper grading are also major warnings, often masking deeper problems. 

What should I watch out for when buying a house?

10 factors to consider when buying a house

  • Price. For many prospective home buyers, a home's purchase price is their biggest concern. ...
  • Location. Where you buy a home will have a tremendous impact on your day-to-day life. ...
  • House size. ...
  • Property taxes. ...
  • Homeowners association.
  • Amenities. ...
  • Future resale value. ...
  • Home condition and age.

Can I afford a $300 k house on a $70 k salary?

You might be able to afford a $300k house on a $70k salary, but it will likely be tight and depends heavily on your minimal debt, good credit, down payment size, current interest rates, and local property taxes/insurance; lenders often suggest a budget closer to $210k-$290k, but with low debt and a significant down payment, you could reach $300k or more, though you'd be near the upper limit for affordability. 

WATCH OUT! Check these 5 things BEFORE you buy a house in the UK

45 related questions found

How much house can I afford if I make $120000 a year?

With a $120,000 salary, you can generally afford a house in the $450,000 to $585,000 range, though this varies greatly, with some lenders approving up to $585,000 and more conservative estimates around $450,000, depending on your credit score, down payment, and existing debts, with lenders often using a Debt-to-Income (DTI) ratio (like 28/36 rule) to limit monthly housing costs to about $2,800 and total debt to 36% of your income. 

What credit score is needed for a mortgage?

However, most lenders still require your score to be at least 600 for an insured mortgage, even with a co-signer. How long does it take to raise my score enough to buy a home? Raising your credit score enough to buy a home (typically up to at least 600–680) can take anywhere from about 3 to 12 months.

What is the 3 3 3 rule in real estate?

The "3-3-3 Rule" in real estate refers to different guidelines, most commonly the 30/30/3 Rule (30% housing cost, 30% down payment/reserves, home price < 3x income) for buyers, or a connection-based marketing tactic for agents (call 3, send notes 3, share resources 3). Another version for property investment involves checking 3 years past, 3 years future development, and 3 comparable nearby properties. 

What is the 5/20/30/40 rule?

The 5/20/30/40 rule is a flexible financial guideline, often for home buying, suggesting your home price be under 5x income, with a 20-year mortgage, <30% EMI, and a ~40% down payment to ensure affordability and financial stability, balancing housing costs with savings for future goals and daily expenses. It helps avoid overborrowing by setting limits on debt and promoting a healthy savings buffer. 

What would fail a house inspection?

Home inspections fail due to major safety, structural, or functional issues, primarily concerning the roof (leaks, damage), foundation (cracks, settling), electrical hazards (outdated wiring, code violations), plumbing problems (leaks, low pressure, sewer line issues), and HVAC system malfunctions, plus signs of mold, pests (termites), and environmental hazards like asbestos or radon. While minor cosmetic flaws don't cause a failure, serious defects in these core systems can halt a sale, requiring negotiations or repairs. 

What are the five red flags?

Five common relationship red flags include controlling behavior, poor or dishonest communication, lack of respect for boundaries, emotional unavailability/neglect, and extreme jealousy or possessiveness, all signaling potential toxicity and unhealthy dynamics. Other significant warnings involve gaslighting, inconsistent actions (words don't match deeds), and constant criticism, indicating deeper issues with trust and empathy.
 

What is the first thing an inspector wants to see?

In most inspections (business, health, safety), an inspector first wants to see your records and paperwork, like licenses, permits, training logs, and compliance documents, to establish a baseline of operations and verify legal standing. For a home inspection, they often start with the roof or exterior to check for major issues, but they also immediately check major systems like the HVAC (heating/cooling) to ensure functionality. 

What is the 3 7 3 rule in mortgage?

The "3-7-3 Rule" in mortgages, stemming from the TILA-RESPA Integrated Disclosure (TRID) rule, sets crucial timing for disclosures to protect borrowers: lenders must provide the Loan Estimate (LE) within 3 business days of application, there's a 7-day waiting period after receiving the LE before closing, and if the Annual Percentage Rate (APR) changes significantly, a new disclosure requires another 3-day waiting period before closing. This rule ensures borrowers get sufficient time to review important loan terms like interest rates and closing costs, promoting transparency. 

What salary do you need for a $400000 mortgage?

To afford a $400k mortgage, you generally need an annual income between $100,000 and $125,000, but this varies greatly based on your down payment, credit score, interest rate, property taxes, and other debts, with some lenders suggesting around $90k-$110k if you have a large down payment and low debt, while others might require over $130k with less savings and higher rates. A common guideline is keeping your total monthly housing costs (PITI) under 28% of your gross income and total debt under 36% (28/36 Rule). 

What is the riskiest part of a home inspection?

The riskiest parts of a home inspection involve structural integrity, hidden water damage, electrical hazards, and toxic materials like asbestos or radon, as these present significant safety concerns, potential for severe injury (falls in crawlspaces/roofs), and extremely costly repairs, often requiring specialized professional assessment beyond the general inspector's scope, such as foundation issues, faulty wiring, or extensive mold from drainage problems. 

Can I retire at 62 with $400,000 in 401k?

Yes, you can retire at 62 with $400,000 in a 401(k), but it's tight and highly depends on your spending, lifestyle, investment mix, and other income like Social Security; it might be sufficient for modest living with careful planning, but working a few more years or drastically cutting expenses offers more security, with a financial advisor being key for success. 

What is the $27.39 rule?

The "27.39 rule" (often rounded to the $27.40 rule) is a personal finance strategy to save $10,000 in one year by saving approximately $27.40 every single day, making a large financial goal feel manageable by breaking it into a daily habit. This strategy encourages consistent saving, helping build funds for emergencies, debt payoff, or other financial goals by turning it into an automatic part of your routine, often done through daily or paycheck-based transfers. 

What is the house buying rule?

Embracing the 30% rule can help your budget stay balanced

The 30% rule advises consumers spend no more than 30% of their monthly income on their mortgage or rent payments, leaving wiggle room in case of unexpected expenses, job loss, family planning, and other goals.

What is Dave Ramsey's mortgage rule?

Dave Ramsey's core mortgage rules emphasize financial freedom by keeping your total housing payment (PITI) to 25% or less of your monthly take-home pay, requiring at least a 20% down payment to avoid PMI, and strongly preferring a 15-year fixed-rate conventional mortgage to save on interest and get debt-free faster. He also advises being debt-free and having an emergency fund before buying. 

How much of a house can I afford if I make $70,000 a year?

With a $70,000 salary, you can generally afford a house in the $210,000 to $350,000 range, but this varies greatly; lenders often suggest your total housing costs be under $1,633/month (28% of your gross income), with your final budget depending on your credit score, down payment, and existing debts. A larger down payment lowers your loan, while higher interest rates or existing debts (like car loans or student loans) decrease your price range. 

What is the lowest commission a realtor will take?

For the lowest real estate commissions, look to services like Clever (around 1.5% listing fee), Redfin (1.5% listing, 1% if buying/selling with them), and Houwzer/Trelora (around 1% listing fee), though some of these models offer reduced service or are location-dependent; these significantly undercut traditional 2.5-3% listing fees, saving thousands, but always confirm if the buyer's agent commission is included.
 

Does my income affect mortgage approval?

Lenders consider monthly housing expenses as a percentage of income and total monthly debt as a percentage of income. Both ratios are important factors in determining whether the lender will make the loan.

Is it true that after 7 years your credit is clear for bad credit?

It's partly true: most negative credit information, like late payments and collections, * must* be removed from your report after seven years, but the underlying debt itself doesn't disappear and collectors can still try to get paid, though their ability to sue depends on state laws. Bankruptcies last longer (10 years for Chapter 7, 7 for Chapter 13). The 7-year clock usually starts from the date of the first missed payment, but for collections, it's often 180 days after that original delinquency. 

What is the 2 2 2 credit rule?

The 2-2-2 credit rule is a guideline for building a strong credit profile, suggesting you have two active revolving accounts (like credit cards) open for at least two years, with on-time payments for those two consecutive years, often with a minimum $2,000 limit per account, demonstrating reliable credit management to lenders. It shows you can handle multiple credit lines consistently, reducing lender risk and improving your chances for approval on larger loans, like mortgages.