Spero Corporation
Independent profile for commercial real estate due diligence buyers.
Research Signals
What our records establish, and what outside review sources indicate.
Our own measure, built from public records, what the firm publishes itself, and what we verified. It does not include anyone's review scores. How we calculate it
- Credentials 4 recorded credentials 20/20
- Track record 36 years in business 20/20
- Published pricing quote-only, no published range 0/20
- Verifiable identity website, phone, address, HQ state 15/20
- Sourcing depth 12 recorded sources 20/20
- Primary Services
- Phase 1 ESA & PCA
- Track Record
- 36+ years
- Coverage
- SC
About Spero Corporation
Spero Corporation is an engineering and environmental consulting firm based in Simpsonville, South Carolina, just southeast of Greenville. Stan Johnson, a professional engineer, founded the firm in 1990. Its clients are mainly lenders, developers, investors and real estate professionals, and the firm says most of its work comes from repeat clients and referrals.
The firm’s working rule is that licensed professional engineers perform or supervise every project. Johnson, a Clemson engineering graduate, runs operations and directly supervises the consulting, engineering and site assessment work. Beyond the P.E., he holds AHERA asbestos inspector accreditation, EPA radon certification and wetlands delineator certification, and is a member of ASTM, the body that writes the Phase 1 and PCA standards.
Spero covers more ground than a pure environmental shop. Alongside Phase 1 Environmental Site Assessments and property condition assessments, it does geotechnical engineering, construction materials testing and third-party special inspections. For a developer, the same firm can handle pre-acquisition diligence and the testing and inspections during construction.
Services Offered
Phase 1 Environmental Site Assessment
Spero performs Phase 1 ESAs under the EPA’s All Appropriate Inquiries rule (40 CFR Part 312) and ASTM E1527. The scope follows the standard: a site inspection, a look at adjoining properties, historical research using fire insurance maps, aerial photos and city directories, regulatory database review, and interviews with owners, tenants and agencies. The goal is to identify any Recognized Environmental Conditions.
Every Phase 1 includes a Tier I vapor encroachment screening to ASTM E2600-15. That matters because vapor intrusion is a common reason a lender asks for more work. Spero also handles lender-specific scopes: Standard & Poor’s protocols, SBA and HUD requirements, forestland and rural property to ASTM E2247, and reduced scopes such as transaction screens (E1528) and the SBA Records Search with Risk Assessment.
One thing to confirm on your quote: Spero’s Phase I page cites E1527-13 in one place and “the most current ASTM E1527” in another. The current standard is E1527-21, and most lenders now ask for it by name, so check that your report will be issued to E1527-21.
Phase 2 Environmental Site Assessment
If a Phase 1 finds a REC, Spero does the follow-up Phase 2 work in-house: soil and groundwater sampling and materials testing. The firm lists environmental drilling and testing as its own service line, and its project list includes Phase I/II assessments at several brownfield sites.
Property Condition Assessment
Spero performs PCAs to ASTM E2018 unless a client directs a different scope. The assessment covers structural, architectural, mechanical, plumbing and electrical systems. It produces cost estimates to fix deficiencies, plus projected replacement and maintenance costs over the loan term. Spero itself notes that PCAs are cheapest when ordered together with the Phase 1, since one site visit serves both reports.
Other Environmental and Engineering Services
- Asbestos, lead paint and mold inspections
- Underground storage tank closure assessments, including former gas stations
- Wetlands delineation and environmental permitting, including Title V air permits
- Geotechnical engineering for retail, restaurant and car wash developments
- Construction materials testing, earthwork and third-party special inspections
Service Area
Spero works from a single office in Simpsonville. Its Phase I page names Greenville and Upstate South Carolina, and that is the area recorded on this listing. The firm’s About page says it serves clients across the southeastern United States, and its principal has worked on sites in more than twenty states. If your property is outside Upstate South Carolina, ask Spero directly whether the field work is staffed from Simpsonville.
What to Expect
Spero quotes per job. Its website publishes no price range for any service. Property type, size, site history and lender requirements will set the number. For typical market prices, see our South Carolina Phase 1 ESA cost page and the property condition assessment cost guide.
If you need both reports, ask for the Phase 1 and PCA priced together and separately. Spero itself says the pair is cheapest done together, and you only see the saving if you ask for the combined number.
What to Provide for a Quote
- Property address, type and approximate square footage or acreage
- Your lender, and any report standard or format it requires
- Whether you need a Phase 1 alone or paired with a property condition assessment
- Your closing date and the date you actually need the report
- Any prior environmental reports, and known past uses such as fuel storage or dry cleaning
Best For
- Upstate South Carolina transactions where a local firm can get to the site quickly
- Lender packages needing both a Phase 1 and a PCA, from a firm where a P.E. supervises both
- Former gas station and UST sites, where Spero has specific closure assessment experience
- Developers who will need geotechnical work, materials testing and special inspections once the deal closes, from the same firm that did the diligence
Frequently Asked Questions
Does Spero Corporation perform Phase 1 ESAs?
Yes. Spero performs Phase 1 ESAs under the EPA All Appropriate Inquiries rule and ASTM E1527, with Tier I vapor encroachment screening included. It also handles SBA, HUD and lender-specific scopes, and transaction screens. Confirm the report will be issued to the current E1527-21 standard.
Does Spero Corporation do property condition assessments?
Yes. Spero performs PCAs to ASTM E2018 and recommends ordering them together with the Phase 1, since that is the more economical route.
Where does Spero Corporation work?
Spero is based in Simpsonville, SC and names Greenville and Upstate South Carolina as its Phase 1 service area. The firm says it serves clients across the Southeast, so ask about properties outside the Upstate.
How much does a Phase 1 ESA from Spero Corporation cost?
Spero does not publish prices; it quotes per job. See our South Carolina Phase 1 ESA cost page for typical ranges, and request a quote for a figure on your property.
Request a Quote
Spero Corporation is at sperocorp.com, on 864-963-5500 or toll free on 800-955-7634. The office is at 119 SE Main Street, Simpsonville, SC 29681.
To compare against other firms covering South Carolina, use our free quote request or browse Phase 1 ESA providers in South Carolina.
Related Pages
Compare With Similar Providers
Other firms in this directory offering Phase 1 ESAs or property condition assessments:
| Firm | Coverage | Phase 1 ESA | PCA | Our read |
|---|---|---|---|---|
| A3 Environmental Consultants (A3E) | IL | Quote only | -- | Our read Positive |
| AAI Environmental Corporation | TN | $1,500 to $5,000 | -- | Our read No reviews |
| AEI Consultants | Nationwide | $2,000 to $5,000 | Quote only | Our read Too few reviews |
| Alfa Environmental | CA | $1,700 to $2,500 | -- | Our read No reviews |
| World Environmental | TX | Quote only | -- | Our read No reviews |
| American Environmental Assessment & Solutions (AEAS) | NY | Quote only | -- | Our read Too few reviews |
Prices are what each firm publishes on its own website. "Quote only" means the firm offers the service and publishes no rate, which is the norm. "Our read" is our own three-way band across the customer review sources we hold for each firm, not any platform's score restated. Each provider page names the sources behind it.