What Sets Hi-Tech Apart

  • Refinishing & restoration specialists — our core work is sanding, refinishing, recoating, and buffing existing hardwood floors
  • Dustless sanding system — vacuum-contained equipment captures airborne dust at the source for a cleaner, healthier job site
  • Three-coat finish process — Polyurethane or Waterborne, each coat fully cured for 24 hours — no cutting corners
  • Douglas fir restoration specialists — decades of experience with original floors in San Francisco's Victorian and Edwardian homes
  • Dark staining specialists — technical expertise for custom and dark stain looks applied evenly the first time
  • Family-owned and operated since 1998 — Andy and his son Harry are both on-site on every job. Harry leads day-to-day operations and is your primary point of contact from estimate through completion
  • NWFA & WFCA certified — trained on industry standards for hardwood floor sanding and refinishing
  • Full-service crew — furniture moving, carpet removal, baseboard installation, and general carpentry
  • Professional carpenters and tradesmen — our crew includes skilled carpenters and licensed tradesmen who handle everything from subfloor repair to custom trim, so your project doesn't require multiple contractors
  • Licensed, bonded, insured — CA Contractor License #859459 (C-15), $1M general liability
  • HOA & condo approved — we can provide STC/IIC ratings and underlayment documentation when required

We offer three installation methods: floating, glue-down, and staple-down. Whether you're renovating a Victorian, updating a kitchen, or fixing squeaky boards, we'll recommend the best approach for your space.

Floating — fastest install, gets you back home quickly. Staple-down — stable and solid. Glue-down — best for concrete subfloors. We check moisture levels and prep the site before any work begins. Our installers are NWFA-certified for both unfinished and prefinished hardwood.

Andy and Harry Tran lead our in-house team through the entire process, so your project stays on schedule from start to finish.

NWFA Certified

We're active members of the National Wood Flooring Association. This means we stay current on industry standards and installation techniques, so you get a floor that's done right and lasts.

Dustless Floor Sanding & Refinishing

Dustless Floor Sanding

Our dust containment system connects vacuum motors to all sanding equipment, capturing most airborne dust during the process. The result: a cleaner job site, less cleanup, and a smoother finish.

Good equipment alone doesn't make a good floor. We've refined thousands of homes and know how to get the sanding and finish right. Our system combines that experience with dust-free technology.

Dustless Refinishing Benefits:

  • Faster Clean-up
  • Faster Turn-around
  • Less Airborne Dust
  • Superior Finished Product
  • Healthier Alternative
  • Environmentally Safe

Professional Refinishing

Refinishing

Andy and Harry Tran have been refinishing floors across San Francisco, Marin, and Oakland since 1998. This is a family business — both are on-site on every job, and Harry is your primary point of contact from estimate through completion. We restore worn hardwood to the way it looked when first installed.

Oak flooring is our primary specialty. We refinish all types of oak — red oak, white oak, antique oak, quarter-sawn oak, rift-sawn oak, character grade oak, and engineered oak. We also specialize in Douglas fir restoration for San Francisco's Victorian and Edwardian homes, as well as maple, walnut, and other hardwood species.

Hardwood can only be sanded a limited number of times. We carefully select the right sandpaper grit at each stage to extend the life of your floors.

We use professional-grade refinishing machines, sealants, solvents, and finishes — not the equipment available at hardware stores. The quality of the tools and materials directly affects the durability and appearance of the finished floor.

We offer two finish options depending on your needs. Water-based finishes dry faster — multiple coats in a single day — and most customers are back in their home within 2–3 days. Oil-based finishes take 4–8 days but add a warm amber tone that many homeowners prefer for red oak and Douglas fir. We'll recommend the right option for your floor species and timeline during your free estimate.

We also offer staining, including dark stains and gray stains that require extra skill to apply evenly. We'll get the color right the first time.

Condominium Installation

Condo Flooring? We Handle the HOA Process.

We provide your HOA with all required STC ratings, IIC ratings, and underlayment specs to get your project approved. We're a licensed contractor experienced with condo communities throughout San Francisco.

Common questions we help with:

  • What are my HOA's soundproofing requirements?
  • What are IIC / STC ratings?
  • Which underlayment do I need?
  • Can I float, glue, or staple my hardwood?
  • Do I need a licensed contractor?

We handle the paperwork and approvals. Chances are, we've already done a project in your building.

Value Added Services

Additional Services

We also handle furniture moving, carpet removal, baseboard installation, and general carpentry. Most flooring contractors don't offer these — we do, so you don't need to hire multiple companies.

If we can't handle something, we have a network of trusted contractors we can refer you to.

What Our Customers Say

"Our 72 year old floors now look new. Andy Tran and his crew are fantastic — skilled, punctual, dependable, affable. It was a pleasure having them work in our home. An excellent experience all around."
— RC Irwin, San Francisco ★★★★★

"Really nice work in everything they did — sanding, refinishing, replacing damaged floor boards, replaced base shoe, and left our house cleaner than when they came. They stuck to their original estimate and schedule, no surprises."
— Ron Olson, Mill Valley ★★★★★

"Harry was able to recoat our floors within a week before we moved in and they are gorgeous. Great experience and clearly cares about the work."
— Trevor S., San Francisco ★★★★★

"Three years later, it still looks amazing. I was impressed with the overall quality and attention to detail — these guys both had the know-how and a very high standard."
— Ted N., San Francisco ★★★★★