GPR concrete scanning and underground utility locating in Olympia, Washington. As the state capital, Olympia’s construction market centers on government facility renovation, capitol campus infrastructure, and Thurston County’s growing commercial and residential sectors: and RainierGPR provides the precision scanning those institutional and commercial projects require, typically next-day from our Seattle HQ.
The most expensive marks are the ones that aren’t there.
A severed PT cable
Post-tension strands are under tons of load. Cut one and you’re into structural repair, engineering review, and a stopped job, a real risk in Olympia’s Seismic Category D buildings.
A hit conduit
Live electrical in the slab means shock risk for your crew and an outage for the building, a non-starter in occupied state facilities and live retail.
811 stops at the meter
Public locates end where private property begins. Capitol-campus steam, fiber, and emergency power, and every private line on older properties, never make the ticket.
As-builts that lie
Downtown Olympia runs from the early 1900s to now. Undocumented modifications are the rule, not the exception, the drawings won’t save you.
We scan first, so none of this happens on your job.
Olympia isn’t Seattle. We scan it like it isn’t.
State government facilities, historic capitol campus buildings, and Thurston County’s steady growth create a scanning market that demands both precision and professionalism. Here’s what actually changes the work in Olympia.
Seismic Zone D reinforcement
Olympia sits in IBC Seismic Category D, the same classification as Seattle. Government and commercial buildings carry dense seismic reinforcement that must be mapped before any structural modification.
Capitol campus & state facilities
The capitol campus spans the original 1920s legislative building to modern office complexes: multiple construction eras, undocumented modifications, and institutional-grade reinforcement in the same project.
Historic downtown renovation
Downtown Olympia runs from the early 1900s to the present. Adaptive-reuse projects need GPR to reveal what’s actually in the walls, floors, and foundations, often very different from the records.
South Sound moisture & soils
Olympia takes significantly more rainfall than Seattle. Heavy precipitation, glacial soils, and Puget Sound proximity make utility locating harder, and make experienced parameter adjustment matter.
Thurston County growth
Lacey, Tumwater, and greater Thurston County keep adding residential and commercial construction. Every slab-on-grade modification needs scanning, and former agricultural land hides buried remnants.
Government & municipal utilities
Capitol campus steam tunnels, government fiber, emergency power conduits. Olympia’s institutional utility networks include specialized systems that take knowledgeable identification.
Every service, on site in Olympia.
From initial scanning to detailed reporting: everything Olympia contractors need to cut, core, and dig safely, from government campus work to a residential slab.
Concrete scanning & imaging
Full GPR scanning for government, commercial, and residential projects: rebar, PT cables, conduit, and voids mapped with on-site markings and professional reporting. Slab thickness measurement and structural assessment included for renovation and seismic-retrofit planning.
Underground utility locating
GPR and electromagnetic locating throughout Olympia and Thurston County: standard utilities plus the specialized government infrastructure: steam, fiber, emergency power, and security conduits. Private lines 811 never marks.
Concrete core drilling
Scan-then-core penetrations for contractors working in government and commercial buildings. Every drill zone cleared for rebar, conduit, and embedded elements first, the thoroughness institutional projects demand.
We’ve already marked floors in Olympia.
When the Buckle space at the Olympia mall was renovated, RainierGPR handled the utility locating and concrete GPR scanning for the general contractor: live retail environment, no dust, no damage, marks on the floor the crew could build from. See the project.
That’s the standard for every Olympia job: government campus, mall renovation, or a homeowner’s slab: scanned, marked, documented. Browse the documented projects →
82 Google reviews. All five stars.
“Tony, the owner, answered the phone on the second ring and had the guys show up to do 15 scans the next day… I haven’t gotten service that prompt and good from the big guys in a long time.”
“…the tail risk of going in blind on a PT slab is… let’s just say ‘financially unmotivating.’ I’m really glad I didn’t gamble it.”
“Matthew & Sam did an outstanding job doing an x-ray analysis and core drilling at a multi-family parking garage. They explained the scope of work thoroughly, executed the job efficiently, and operated with the utmost professionalism.”
The Rainier Pre-Scan Standard.
Book today
Call or send the form: Tony answers, scopes the job, and schedules Thurston County typically next-day.
Scan on site
GPR and electromagnetic locating across your cut, core, or dig zones: no noise, no dust, no downtime.
Marks you build from
Findings chalked on the surface in APWA color code and walked through with your crew before we leave.
Same-day report
A digital locate report documenting what’s where: your record for the GC, the inspector, and the next trade.
Trusted across Olympia’s key industries.
All of Thurston County: and down the corridor.
Olympia, Lacey, Tumwater, Yelm, and the I-5 corridor south to Centralia and Lewis County, west toward Grays Harbor. Near the Tumwater Town Center, the Martin Way corridor, or a rural site in south Thurston County: we can reach you, typically next-day.
Also serving Central Florida from Orlando. See Florida coverage.
Olympia GPR scanning, answered straight.
Ready to protect your Olympia project?
Get accurate subsurface data before you cut, core, or dig. Free quotes, next-day service, and the personal attention national chains can’t match.
"*" indicates required fields
