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Local business · Winthrop, MALocal business · 166 Woodside Ave., Winthrop, MA 02152
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Xtreme Shotcrete sprays concrete for a living: its site describes shotcrete work on pools, retaining walls, slope stabilization and structural repairs for homes and businesses on the North Shore. Local news coverage of the Winthrop company is about seawalls. A May 2023 Boston Globe article quoted owner Michael Whitehead racing the tide to stabilize dirt before the water came up, and a May 2023 Daily Item article said the city hired him to spray concrete on the wall right after it collapsed. In April 2024, the Item reported a Xtreme Shotcrete crew stripping damaged concrete from the King's Beach seawall in Swampscott. BBB lists Mike Whitehead as president of a business started in 2007 with an A+ rating. The Massachusetts home improvement contractor license held by Michael Whitehead, #163328, is expired on the state registry.
“A crew from Xtreme Shotcrete strips away damaged concrete from the King's Beach seawall in Swampscott as phase four of the restoration project gets underway.”
“Xtreme Shotcrete owner Michael Whitehead, who the city hired to spray concrete on the wall immediately after the collapse, estimated it would cost at least $300,000 to $800,000 to repair the entire wall.”
““I’m racing against the tide right now to stabilize this dirt before the water comes up and it gets even more uglier than it is,” said Michael Whitehead, owner of Xtreme Shotcrete”
“The section between Monument Ave. and Mission on the Bay is now considered the final phase of the project, which is being done by Xtreme Shotcrete.”
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1 change recorded — last scanned Sep 11, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Xtreme Shotcrete. Use it to sanity-check bids, then get the real number in writing.
Not sure which you need? Start with an inspection — many reputable companies assess free, and independent assessments run up to $500.
The wall run getting the drain — a full 30×40 ft basement is about 140 ft.
Estimated range
$7,600 – $15,000
Typical waterproofing project around $11,300
Specializes in historic buildings3.7
Family-owned and operating since 19892.3
Roof survived a major storm intact5.0
