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603 Basement Solutions logo
603 Basement Solutions logo
603 Basement Solutions logo

Foundation Repair in Exeter, NH

Exeter has two very different foundation conversations

If the wall is masonry or fieldstone

Loose mortar, displaced stone, sill deterioration, and altered floor supports require an inspection of the actual assembly. An injection meant for poured concrete is not a restoration plan for a masonry wall.

If the wall is poured concrete or block

We separate a stable crack from wall movement or foundation settlement before choosing a targeted repair. The material is confirmed on site, not predicted from the neighborhood.

Exeter’s median housing unit was built in 1978, while about 22% of its housing units predate 1940, according to the 2023 ACS. We do not use either figure to diagnose a house. They reinforce why two inspections in the same town can produce different scopes.

Bring any old repair invoices or engineering notes you have. On a house that has changed hands several times, those records can explain whether a steel post, patched wall, or sistered beam was a permanent repair, a temporary support, or work done for an earlier problem. That context is more useful than guessing from how new the material looks.

Downtown Exeter beside the Squamscott River
Exeter combines a historic center and older housing with later neighborhoods, which is why the wall material and floor-support layout matter more than a citywide average. Photo: Quintin Soloviev, CC BY 4.0.

Start at the top of the support system

If the floor is sagging, we do not jump straight to a new post. The beam may be undersized or damaged. The sill at the outside wall may have lost material. The old column footing may not be doing its job. Or the foundation below the whole assembly may be moving. Each layer has to be checked in order.

For verified support work, lally-column replacement runs $1,300–$2,500 and carries a 10-year warranty against further settlement in treated areas. Sill replacement is scoped separately because access and the length of damaged wood change the work.

Rusted lally column before and new steel columns after replacement
A before-and-after view shows why the beam, post connection, and footing all belong in the same inspection.
New adjustable steel column on a poured footing in a fieldstone basement
A new adjustable column set on a purpose-built footing.

When the wall itself is the issue

A wall that is moving inward needs stabilization, not a skim coat. 603 uses carbon-fiber straps or power braces where the design calls for them. Confirmed prices are $850 per carbon-fiber strap and $1,300 per power brace. The wall-stabilization warranty is 25 years for further inward movement within design tolerances.

A wall that is crumbling, displaced, or unable to carry the structure safely may need a different repair or replacement scope. We keep that pricing quote-based instead of pretending one online range covers every wall.

When settlement points to piers

A dropping corner, continuing level change, and related cracking can point to footing settlement. When that is the cause, 603 installs helical piers in-house. They are priced at $2,700 each for the first three and $2,200 each after that and carry a 25-year engineered-performance warranty.

The inspection still comes first. A crack is not automatic evidence that a pier is needed. When the wall is stable and the issue is limited to one crack, foundation crack repair in Exeter may be the appropriate scope.

What happens after you call

The inspection and estimate are free. We look at the symptoms, take the measurements the repair requires, explain the options without pressure, and send the written quote within 24 hours. If the right answer is a narrow crack repair, we say so. If the structure needs a larger plan, the proposal separates the repair methods and warranties.

Frequently asked questions

Can every old Exeter foundation be repaired the same way?

No. Wall material, support above it, current movement, and access decide the method. Age is context, not the diagnosis.

Do you replace lally columns without checking the beam?

No. The new support is only useful if the beam, sill, footing, and load it carries are part of the inspection.

What if it is only a leaking crack?

If the wall is stable, injection may be enough. The inspection checks for movement before the repair is selected.

Where does the Exeter crew travel from?

603 serves Exeter from its East Kingston shop.

Review the complete service at Structural and Foundation Repair, read the foundation cost decision guide, or find Exeter on the service-area map.

How to compare foundation proposals in Exeter

Start by comparing the diagnosis, not the total. One contractor may be pricing a crack repair while another is pricing wall stabilization or floor support. Those are not competing versions of the same job. The written proposal should identify the failing component, the proposed method, the quantity or treated length, access assumptions, cleanup, and the warranty attached to the work.

The 2023 American Community Survey puts Exeter’s median housing year at 1978 and reports that 22.0% of housing units were built in 1939 or earlier. A housing date cannot tell you whether one home has fieldstone, block, poured concrete, or a later addition. It only reinforces the need to inspect the material and support layout rather than applying a townwide assumption.

If the proposal says “stabilize”

Ask what movement was measured, what system resists it, how many braces, straps, or piers are included, and what area the warranty covers.

If the proposal says “replace”

Ask which material is beyond repair, how temporary support will be handled, what adjoining components were checked, and whether engineering or a permit belongs in the scope.

603’s proof is method-specific

The work photographs on this page come from 603’s structural portfolio. They show column, footing, wall-brace, sill, and helical-pier installation methods. The company self-performs helical-pier work, is licensed and insured, and has served 5,000+ New England homeowners.

Method proof also needs a boundary. A photograph can show how a footing, column, brace, or pier is installed, but it cannot establish the material or failure at your address. The free inspection connects the visible condition to the repair; the written proposal records that connection.

The last questions before you sign

  • Is the repair designed to stop movement, recover position where possible, replace damaged material, or only seal water?
  • What part of the job is priced by unit, such as a pier, brace, strap, or column?
  • What conditions could change the price after work begins?
  • Who handles any engineering or municipal review the proposed scope requires?
  • What photographs, measurements, and warranty documents will you receive when the job is complete?

603’s inspection and estimate are free, and the written quote normally follows within 24 hours. Confirmed starting points include $1,300–$2,500 for a lally-column replacement, $850 per carbon-fiber strap, $1,300 per power brace, and $2,700 each for the first three helical piers with later piers at $2,200 each. These are decision ranges, not a substitute for the measured scope.

Exeter foundation questions worth answering on paper

What if the wall material changes along the basement?

Document each section. Additions and earlier repairs can create different materials and support details in one house. The proposal should state which area is being treated rather than using one description for the entire perimeter.

Can a new column repair a damaged sill?

A column may provide temporary or permanent support at a designed point, but it does not replace deteriorated wood at the perimeter. The sill, beam, post, connection, and footing must be evaluated as a system before the repair is selected.

What does the free inspection produce?

You should leave the decision with a clear explanation of the finding and receive a written estimate, normally within 24 hours. The scope should identify the method, quantity, price, and warranty rather than relying on a verbal description of “foundation work.”

When booking, mention if the visible condition crosses from one foundation material or addition into another. Photograph both sides of that transition and any support directly above it. The repair may need one coordinated plan, but the inspector should not assume that the same method belongs on both sections.

Find the failed part before pricing the fix

Free inspection. Free estimate. Written quote within 24 hours.

Call 603-610-1770Book a Free Inspection

Sources: U.S. Census ACS 2023 5-year tables B25035 and B25034; 603 confirmed service, pricing, and warranty information; public Google review. Work photos show 603 repair methods.

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