Provider profile
Kefficient Foundation & Waterproofing
Provider snapshot
What this listing says
Richmond-area homeowners who need crawl space mold removal bundled with encapsulation, from a family-owned firm with a 5.0 Google rating across 543 reviews.
Best for
- Richmond-area homeowners who need crawl space mold removal paired with encapsulation in a single project, avoiding the hassle of coordinating multiple contractors.
- Buyers getting a second opinion on a crawl space bid — multiple reviewers describe Kefficient pricing below competitors, and one reviewer caught a $33,000 quote from another company for work that was not needed.
- Homeowners who want daily progress updates with photos — project managers Kyle and Darryl send end-of-day recaps with pictures, which is especially useful if you cannot be on-site during the work.
- Properties needing both foundation repair and mold remediation handled together, since Kefficient bundles structural and moisture work under one contract.
- Owners in outlying counties like Charlottesville, Fredericksburg, or Williamsburg who struggle to find a crawl space specialist willing to travel.
About this company
Kefficient is a family-owned crawl space, foundation, and waterproofing company based in North Chesterfield, Virginia, serving the greater Richmond area. Mold remediation is one of several services, not the sole focus. They handle mold inspection, removal, and the underlying moisture problems (encapsulation, drainage, vapor barriers) as a single scope of work.
Their mold remediation page describes inspection, containment, removal using CDC-approved methods, and prevention through crawl space encapsulation and vapor barriers. They hold IICRC firm certification and NADCA certification for air duct and dryer vent cleaning. They offer free inspections, financing options including 48-month no-interest plans, and lifetime transferable warranties on their work.
The company is owned by Mark Keffer, who reviewers mention visiting job sites in person. Their contact page identifies them as family-owned and operated. They list over 50 Virginia counties in their service area, stretching from Charlottesville to Williamsburg and south to Emporia.
A 5.0 Google rating across 543 reviews is rare for a company with this volume. The overwhelming majority of reviews describe crawl space encapsulation bundled with mold removal, suggesting that is the bread-and-butter job.
Services
Service area
Headquartered in North Chesterfield (Richmond), Virginia. Serves the greater Richmond metro including Chesterfield, Henrico, Hanover, and Goochland counties, and extends to Charlottesville, Fredericksburg, Williamsburg, Petersburg, Farmville, and South Hill. Claims coverage across 50+ Virginia counties from Fauquier and Stafford in the north to Brunswick and Southampton in the south.
Review consensus
Brad Conner (sales) appears in the most reviews by a wide margin. Reviewers describe him as straightforward, willing to crawl under the house during the estimate, and honest about what does and does not need fixing — one reviewer recounts Brad telling her she had zero mold despite another company quoting $33,000 for encapsulation. Darryl Prince (foreman) draws praise for attention to detail and daily communication. Kyle (project manager) sends end-of-day photo updates that multiple reviewers call out as a standout. Sean gets credit for patience and willingness to recommend solutions outside Kefficient's scope. Joe is praised for going above and beyond on maintenance visits. Several reviewers mention the finished crawl space looking like a "clean room" — a consistent theme across months of reviews.
2 found across 543 total reviews at 5.0★. One reviewer (John Fenninger, December 2025) hired Kefficient for crawl space insulation and says an independent energy auditor later found the work inadequate. Kefficient's owner response states the work was completed three years prior and that the customer chose a limited scope against their recommendation. The disagreement over scope versus execution is unresolved. A second reviewer (M B, September 2025) describes a missed appointment, repeated hang-ups when calling the office, and a sarcastic response from a general manager who admitted scheduling the appointment for the wrong day. Kefficient's owner response apologizes and says Mark Keffer attempted to reach the customer. A 2-star review (Doreen Roehrs, June 2026) describes paying a deposit and having electrical work done for a dehumidifier, then receiving no callbacks about when the full job would start. A 3-star review (Margo Leonard, April 2026) describes uneven ground under the encapsulation liner despite asking twice for it to be smoothed, creating trip hazards.
The negatives cluster around office and scheduling operations, not field work quality. The missed appointment, unreturned calls, and deposit-then-silence complaints point to a gap between the field crews (consistently praised) and the office/scheduling staff. Owner responses exist on 2 of 4 recent negatives — personalized in one case (naming Mark Keffer), more template-like in the other. The 50% response rate on negatives is moderate.
Brad Conner (sales — overwhelmingly positive, named in 15+ reviews). Bradley Conner (same person, full name used by some reviewers — positive). Darryl Prince (foreman — positive). Kyle (project manager — positive). Sean (sales/inspector — positive). Jacob (sales — positive). Joe (maintenance — positive). Shane (project manager — positive). Jeff (crew lead — positive). Rick (installer — positive). Mack (crew — positive). Lorrell (crew lead — positive). Mike Andrews (sales — positive). Jay Garcia (crew — positive). Daniel (project manager — positive). Connie (coordinator — positive). Brandon (operations — positive). Fabricio (crew — positive). Randy (crew — positive). Andres (crew — positive). Ramiro (crew — positive). Alexander (crew — positive). Ricardo (crew — positive). Mark Keffer (owner — positive, visited job sites).
Kefficient's field work earns near-universal praise, and Brad Conner's honesty during estimates sets them apart from competitors. The risk sits in the scheduling and office communication — confirm your appointment and get a written timeline before paying a deposit. If you reach Brad or one of the named project managers, you are in strong hands.
Keep in mind
- Kefficient does both mold inspection and mold remediation. That means the same company diagnosing the problem also profits from the fix. Consider getting an independent mold test before or after their work to confirm the scope.
- Their service area claims span 50+ Virginia counties from Charlottesville to the Northern Neck. Availability and response times for locations far from their Richmond base may differ from what metro-area customers experience.
- Two of the four recent negative reviews describe scheduling failures and unreturned phone calls. One reviewer waited past the appointment time with no contact. If your appointment is not confirmed the day before, call to verify.
- The website mentions CDC-approved methods for mold removal but does not specify the exact chemicals, equipment, or post-remediation clearance testing process. Ask what that means in practice before signing.
- Mold remediation is one of many services Kefficient offers. Their primary identity is crawl space encapsulation and foundation repair. If your mold issue is outside a crawl space or basement, confirm they have experience with that scope.