Foundation Repair for Older Homes: Pre-1970 Guide

Foundation Repair for Older Homes: What Pre-1970 Houses Need

Foundation repair for older Louisiana homes means working with pier-and-beam bones, 50 years of clay soil movement, and aging materials — here’s what pre-1970 houses really need.

So, what does foundation repair for older homes in Louisiana involve? Pre-1970 homes usually need a gentler, more diagnostic approach: re-shimming and re-leveling pier-and-beam systems, replacing rotted sills and joists, adding drainage the house never had, and sometimes installing piers where settlement has gone too far. Most older-home jobs run $3,000–$12,000, and every one starts with a free inspection.

Drive through South Highlands, Broadmoor, or the older streets off Fairfield Ave and you’ll see why Shreveport homeowners love these houses — real wood floors, tall ceilings, craftsmanship you can’t buy new. But a house built in 1955 has spent seventy Louisiana summers and winters riding our shrink-swell clay, and the foundation tells the story: piers that have shifted, sills that have softened, drainage that was never designed for the storms we get now. Older homes don’t need different honesty from a contractor — they need a different kind of experience.

In this guide we’ll cover what makes pre-1970 Louisiana foundations different, the problems we find most often in older Shreveport homes, how repair approaches differ from new construction, honest cost ranges, and how to fix the structure without wrecking the character you bought the house for. Our Louisiana clay soil guide pairs well with this one if you want the full picture of what seven decades of soil movement does to a house.

What Makes Pre-1970 Louisiana Foundations Different

Most older Shreveport homes weren’t built on concrete slabs — they were built on pier-and-beam foundations: the house sits on wood or masonry piers with a crawl space underneath. That design is actually forgiving. When one pier settles, the house can be re-leveled by shimming and adjusting, without the excavation a slab requires. But seventy years of Louisiana weather is a lot to ask of any system:

• Materials have aged out. Original pine sills and joists may be softened by decades of humidity. Concrete block piers from the 1950s can be crumbling. Cast-iron drain lines under the house may be weeping into the soil.
• Standards were different. Many older homes have fewer piers than modern code requires, wider pier spacing, and no moisture barrier whatsoever — because nobody built one in 1960.
• Drainage was an afterthought. Gutters, grading, and downspout extensions we consider basic today often weren’t part of the original build. The house has been managing water by luck for decades.
• Previous repairs pile up. Old houses have histories: a shim job in the 80s, a partial re-pier in the 90s, a bathroom addition the foundation wasn’t designed for. Each layer affects the next repair.
• Additions complicate everything. That sunroom or extra bedroom may sit on a different foundation type than the original house, and the joint between them is where movement shows first.

The good news: pier-and-beam houses are the most repairable foundations in Louisiana. Almost everything that goes wrong with them can be fixed from the crawl space, without tearing up floors or landscaping. That’s one reason these older homes are worth saving — structurally, they’re cooperative patients.

The Problems We Find Most Often in Older Shreveport Homes

Walk under enough pre-1970 homes in the 71106, 71105, and 71104 ZIP codes and the same issues keep showing up. Here’s the pattern by era:

Era	Typical foundation	Most common issues
Pre-1940	Brick or stone piers, wood sills	Deteriorated mortar, rotted sills, severe moisture, undersized piers
1940–1960	Concrete block piers, early crawl spaces	Settled or shifted piers, termite damage, aging cast-iron plumbing leaks
1960–1970	Pier-and-beam or early slabs	Differential settlement, drainage failures, unreinforced early slabs

Two of these deserve special attention. First, the cast-iron plumbing: in homes from the 40s through the 60s, drain lines run under the house, and when they start weeping — as old cast iron does — they saturate the soil right under the piers, causing localized settlement that looks like a foundation problem but starts as a plumbing problem. Second, termite damage: Formosan termites love old, damp wood, and a house that’s had moisture problems has usually had termite pressure too. A foundation inspection on an older home should always include a look at the wood, not just the concrete.

How Repair Approaches Differ: Old House vs. New House

Repairing an older home isn’t just a smaller version of repairing a newer one. The playbook changes:

• Re-leveling before piers. A newer slab that’s settling usually needs piers. An older pier-and-beam home often just needs a careful re-level — resetting piers, replacing shims with proper steel or composite shims, and adding piers where the original spacing was too wide. It’s less invasive and less expensive.
• Wood repair is part of the job. New-home foundation work rarely touches framing. On a 1960s house, sill and joist repair is routine — sistering rotted joists, replacing soft sills, treating for past termite damage.
• Gentler lifting. Old houses don’t tolerate aggressive lifting. Raising a 70-year-old house too fast cracks plaster, pops tile, and binds windows that were fitted to the settled position decades ago. Slow, incremental lifting with constant elevation checks is the only way.
• Drainage gets added, not assumed. Newer homes usually have some drainage to work with. Older homes often need it built from scratch — French drains, grading correction, downspout extensions — because the original lot predates modern water management.
• Plumbing gets checked first. Before any structural work on a pre-1970 home, the drain lines should be scoped. Fixing piers over a leaking cast-iron line is building on a swamp.

This is also where contractor selection really matters. A crew that only does new-construction-style pier jobs may push piers on an older home that really needs re-leveling and wood repair — an oversized, overpriced fix. Our foundation inspection service is built around older homes precisely because the diagnosis is harder and the stakes of getting it wrong are higher.

What Foundation Repair Costs for Older Louisiana Homes

Older-home pricing has wider ranges than new-home work, because you’re often fixing two problems (structure + wood) instead of one. Here’s what we typically see around Shreveport:

• Re-leveling and re-shimming: roughly $3,000–$7,000 for most pier-and-beam homes, depending on pier count and how far out of level the house is.
• Re-leveling plus sill/joist repair: roughly $6,000–$12,000, when rotted wood needs sistering or replacement alongside the leveling.
• Adding piers to an older home: roughly $1,000–$2,000 per pier installed, when settlement is beyond what re-leveling can correct.
• Drainage correction for an older lot: roughly $1,500–$5,000, which older homes almost always need as part of the job.

One cost trap to avoid: the “cheap re-level” that skips the wood repair. A contractor who levels the house but leaves rotted sills in place has given you a level house sitting on bad wood — and you’ll pay for both jobs when the sills fail. The full scope costs more up front and far less over the life of the house. For the bigger question of whether the investment pays off, see our is foundation repair worth it breakdown — older homes in established neighborhoods like South Highlands and Broadmoor usually answer that question with a yes.

Fixing the Structure Without Wrecking the Character

Here’s what owners of older homes worry about most, and it’s not the invoice — it’s whether the repair will damage what makes the house special. The honest answer: foundation work happens underneath and around the house, not inside its character. Plaster walls, original trim, heart-pine floors, and vintage tile aren’t touched by pier work or re-leveling. The risks are real but manageable:

• Interior cracking during lifting — plaster and old drywall can crack if a house is lifted too aggressively. Slow lifting (a quarter-inch at a time, with pauses) keeps this to hairlines that a painter can handle.
• Chimney separation — brick chimneys on old homes sometimes sit on their own footings. A good contractor checks chimney footings separately before lifting the house around them.
• Landscaping and skirting — pier work means access points around the perimeter. Established plantings near the foundation may need temporary moving. Ask the crew what gets disturbed before they start.
• Matching old materials — when piers or sills are replaced, matching the era isn’t about looks (nobody sees them) — it’s about compatibility. Old and new materials need to work together structurally, which an experienced crew handles as routine.

The houses in South Highlands and Broadmoor have survived seventy Louisiana hurricane seasons, the clay, and the humidity — they’re tougher than they look. A proper foundation repair doesn’t change what you love about an old house. It just makes sure the house is still standing straight for the next owner to love it too.

Should You Buy an Older Home With Foundation Issues?

This comes up constantly in Shreveport’s older neighborhoods, where the charming 1950s brick ranch comes with a sloping hallway. Here’s the framework:

• Get the inspection before the offer is final. A foundation inspection with elevation readings tells you whether you’re looking at a $4,000 re-level or a $12,000 structural job — and that number is negotiating leverage.
• Price the full scope, not the headline repair. Older homes bundle issues: the re-level needs the wood repair needs the drainage. Get one quote that covers the whole system.
• Check what’s been done before. Ask for any past foundation work records. A house that’s been re-leveled twice in twenty years has an ongoing soil or water problem that needs solving, not another re-level.
• Factor in the neighborhood. In established areas like South Highlands, Broadmoor, and the Fairfield corridor, repaired older homes hold value well — a documented, warrantied foundation repair removes the discount buyers would otherwise demand.
• Walk away from the scary ones. Severe structural failure — collapsing piers, major sill rot through load-bearing walls, foundation movement tied to a failing retaining wall — can exceed the home’s value to fix. Not every old house is worth saving, and a good inspector will tell you which ones aren’t.

The FEMA guidance on older home resilience is worth a read if you’re buying in a flood-prone part of town, and a foundation repair specialist with real older-home experience — not just new-slab experience — is the right second opinion before you sign. Old houses reward buyers who do their homework and punish buyers who don’t. Be the first kind.

Frequently Asked Questions About Foundation Repair for Older Homes

Is it worth repairing the foundation on an old house?

Usually, yes — especially in established Shreveport neighborhoods where land and location hold value. A documented, warrantied foundation repair typically costs far less than the price discount an unrepaired foundation forces, and pier-and-beam homes are among the most repairable foundations in Louisiana. The exception is severe structural failure that approaches the home’s value to fix.

How much does foundation repair cost for a pre-1970 home?

Most older-home jobs in the Shreveport area run $3,000–$12,000: re-leveling and re-shimming at the lower end, re-leveling plus sill and joist repair in the middle, and added piers or extensive drainage at the upper end. Older homes often need wood repair and drainage alongside the structural work, which widens the range.

Can you level a 70-year-old house without damaging it?

Yes, when it’s done slowly. The key is incremental lifting — a quarter-inch at a time with pauses and constant elevation checks — rather than jacking the house up in one aggressive push. Plaster may develop hairline cracks that a painter can fix, but the structure itself handles gentle lifting well.

Do older pier-and-beam homes need piers, or just re-leveling?

Many just need re-leveling: resetting piers, replacing shims, and adding piers where the original spacing was too wide. New piers enter the picture when settlement is beyond what re-leveling can correct, or when soil conditions won’t hold a re-leveled pier. A proper inspection with elevation readings tells you which camp you’re in.

Should the plumbing be checked before foundation work on an old house?

Absolutely. Pre-1970 homes often have cast-iron drain lines running under the house, and a weeping line can saturate the soil under the piers — causing settlement that looks like a foundation problem but starts as a plumbing problem. Scoping the lines before structural work is standard practice on older homes.

Will foundation repair hurt my home’s historic character?

No — foundation work happens under and around the house, not in its visible character. Original trim, floors, plaster, and exterior details aren’t part of the work area. The main cosmetic risk is hairline interior cracking during lifting, which slow, careful work keeps to a minimum.

How long does foundation repair take on an older home?

Most older-home jobs take two to five days: a day or two for re-leveling, longer if sill and joist repair or drainage work is included. You don’t need to move out — the work happens in the crawl space and around the perimeter, and a good crew leaves the house livable each night.

Pelican Foundation Repair
6118 Fairfield Ave, Shreveport, LA 71106, USA
318-585-2003
https://foundationrepairshreveport.com/