The items that end up costing $15,000 to $40,000 are almost never the ones that catch your eye during a showing. Here is a room-by-room checklist of what to look for before you write any number on an offer.
Exterior -- What to Check Before You Enter
Most buyers start evaluating a home the moment they walk through the front door. I start in the driveway. The exterior tells you more about a home's maintenance history than anything inside, and in St. Louis specifically -- where brick construction dominates -- the outside is where the money lives.
- Roof: Look for missing, curling, or granule-loss on asphalt shingles. A sagging ridge line indicates structural issues. Ask the listing agent how old the roof is -- if they do not know, that is information. Roofs in St. Louis typically last 20 to 25 years.
- Gutters and downspouts: Gutters pulling away from the fascia or downspouts that terminate at the foundation are both water management failures that feed directly into basement problems.
- Tuckpointing: On brick homes, run your finger along the mortar joints. Soft, crumbling, or recessed mortar needs attention. Failed tuckpointing is the primary cause of water intrusion in St. Louis brick homes -- and one of the most overlooked items during a casual showing.
- Foundation: Horizontal cracks in a poured concrete foundation or stair-step cracks in block or brick indicate lateral pressure -- a more serious structural issue than vertical hairline cracks. Neither is automatically a dealbreaker, but both need professional evaluation.
- Grading: The ground should slope away from the foundation on all sides. Negative grade -- where soil slopes toward the house -- channels water directly to the foundation and basement. Easy to miss, expensive to correct after the fact.
St. Louis Specific: Tuckpointing
More than 60% of St. Louis homes are brick construction. Mortar has a lifespan of 20 to 30 years, meaning most older St. Louis homes need tuckpointing at some point. A full house tuckpointing runs $5,000 to $15,000. It is almost never disclosed upfront. Check every exterior brick wall.
Basement
In St. Louis, the basement is where you find the expensive problems. Clay soil that expands when wet creates lateral pressure on basement walls. Old sewer laterals back up and fail. Water intrusion is common and ranges from cosmetic to structural. Take your time down here.
- Efflorescence: White mineral deposits on basement walls indicate water has moved through the wall. It does not always mean active leaking but it means water has been present.
- Staining at floor level: A waterline on the wall or staining at the wall-floor junction indicates past water intrusion. Ask when it happened and what was done.
- Sump pump: Is there one? How old? Does the pit have water in it? A functioning sump pump is actively managing water -- which is fine, but you want to understand what it is managing.
- Previous repairs: Hydraulic cement patches, painted-over cracks, or fresh paint on basement walls can indicate attempts to manage water issues. Not always -- but note it and ask.
- Sewer lateral access: Look for a cleanout access point -- a capped pipe, usually 3 to 4 inches in diameter, near the floor. On homes built before 1980, budget $150 to $300 for a camera inspection of the lateral before you close. Clay tile laterals crack, offset, and collapse. Replacement runs $4,000 to $12,000.
Mechanical Systems
- HVAC age: The manufacture date is printed on the data plate inside the unit. Furnaces over 15 years and AC condensers over 12 years are approaching end of service life. A full system replacement in St. Louis runs $7,000 to $15,000. Factor this into your offer.
- Water heater age: Same principle -- the manufacture date is on the data plate. Standard tank water heaters last 8 to 12 years. Replacement runs $900 to $1,800 installed.
- Electrical panel: Look for the panel brand. Federal Pacific Stab-Lok panels and Zinsco panels are known fire hazard brands that should be replaced. These show up frequently in St. Louis homes from the 1960s and 70s. Panel replacement runs $2,000 to $4,000. Count the circuits -- a 100-amp panel in a large home is undersized for modern use.
- Plumbing supply lines: Original galvanized steel supply lines restrict water pressure and corrode from the inside. Look under sinks and in the mechanical room. If you see grey steel pipe, ask when the supply lines were updated.
- Cast iron drain stack: Many St. Louis homes built before 1975 have original cast iron drain stacks. These are not inherently a problem but deteriorate with age and can develop cracks, scale buildup, and joint failures. A camera inspection of the main drain stack is a reasonable ask on any pre-1975 home.
Federal Pacific Panels in St. Louis
Federal Pacific Electric Stab-Lok panels were installed in an estimated 28 million homes between the 1950s and 1980s. Multiple fire investigations have linked them to breaker failure and house fires. They appear frequently in St. Louis homes built in that era. If the listing agent or seller does not know what type of panel a home has, read the label yourself before you leave the showing.
Attic
- Insulation: Visible rafters with no insulation or compressed, inadequate insulation means higher utility costs. St. Louis winters are not mild -- proper insulation matters.
- Ventilation: Proper ridge and soffit ventilation prevents moisture buildup that causes sheathing rot and mold growth.
- Staining or daylight: Water staining on sheathing indicates past or active roof leaks. Visible daylight means the roof covering has failed somewhere.
- Knob-and-tube wiring: In homes built before 1940, original knob-and-tube wiring may still be present in the attic. Most insurers will not cover homes with active knob-and-tube wiring, and many lenders require its removal before closing.
Interior Red Flags
- Fresh paint over everything: A full interior repaint -- especially in a basement or on ceilings -- is worth a second look. It does not mean the seller is hiding something, but it means you cannot see what was underneath.
- Doors and windows that do not operate: Sticking doors and windows can indicate foundation movement or framing settlement. Check every door and every operable window.
- Floor bounce: Walk across wood floors and feel for bounce or flex. This can indicate damaged or undersized floor joists below, or active wood rot.
- Ceiling stains: Brown staining on ceilings, especially in upper-level rooms directly below a roof, indicates past or active roof leaks.
- Radon: Missouri has elevated radon levels in many areas. A radon test runs $100 to $150 and is worth adding during the inspection period. Mitigation systems run $800 to $1,500 if needed.
What This Means For Your Offer
This checklist is not designed to talk you out of buying a house. It is designed to make sure the price you offer reflects what is actually there -- not just what the staging and fresh paint make you feel.
Every item on this list has a cost range. Understanding which items are present and roughly what they will cost to address gives you the information to make a defensible offer and negotiate from a position of knowledge rather than hope.
The goal going into a showing is not to find a perfect house -- those are rare. The goal is to understand what you are buying well enough to price it correctly and know when to walk.
Cost ranges for every major repair item in the St. Louis market. St. Louis Home Repair Cost Guide →
→
How to turn what you find into a defensible offer number. How Repair Costs Should Affect Your Offer Price →
→
What happens after you are under contract -- and how to use the report. What Happens at a Home Inspection in St. Louis →
→
Frequently Asked Questions
What is the most common expensive problem in St. Louis homes?
Sewer lateral failure in pre-1980 homes is the most common five-figure surprise. Clay tile laterals crack, offset, and get infiltrated by tree roots over decades. A camera inspection before closing costs $150 to $300. Replacement costs $4,000 to $12,000. The second most common is basement water intrusion combined with failed tuckpointing on brick homes.
How do I know if a house has a Federal Pacific panel?
Look at the electrical panel door -- the label will say Federal Pacific Electric or Stab-Lok. These were common in St. Louis homes built between 1950 and 1985. If you cannot access the panel at a showing, ask your agent to confirm the panel brand before you write an offer. Replacement typically runs $2,000 to $4,000.
Should I get a sewer scope on every older St. Louis home?
Yes, on any home built before 1980. Clay tile sewer laterals are endemic in St. Louis's older housing stock, and lateral failure is one of the most common post-closing surprises buyers face. The camera inspection costs $150 to $300 and tells you the condition of the pipe before you are committed to the purchase.
What does negative grading mean and why does it matter?
Negative grading means the ground slopes toward the foundation instead of away from it. This channels rain and snowmelt directly against the foundation and into the basement. Correcting negative grading ranges from simple soil regrading at a few hundred dollars to more significant drainage work. It is one of the easiest things to spot during an exterior walkthrough and one of the most overlooked.
Is tuckpointing always a dealbreaker on a St. Louis brick home?
No -- most older St. Louis brick homes have tuckpointing that is at various stages of wear. The question is whether it has failed to the point of allowing water intrusion, and how much work needs to be done. A single failing facade is a $1,500 to $4,000 repair. A full house that has not been touched in 30 years is a $5,000 to $15,000 project. Factor the scope into your offer rather than treating it as automatic grounds to walk.
George Kindler
Marine Corps Veteran • Licensed Missouri Agent • 13 Years • 250+ Transactions
Grew up in South St. Louis, lived in Dogtown for 6 years, now in South County. You'll find us at White Flag Church on Sundays. This is my city, and I know it well.
Questions about what you are reading? I answer personally -- no team, no handoff.
