CornerStone77 LLC

$170/service call

Estimated price

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About

I'll take each job seriously. No job too small. When I joined US Army I fixed helicopters. Attention to details is a must because lives of people depend on quality work. I carried this attitude to civilian life.

Overview

Hired 714 times

Serves Haymarket, VA

Background checked

1 employee

8 years in business

Business hours

SunClosedMon9:00 am - 9:00 pm

Payment methods

This pro accepts payments via Cash, Check, Credit card, PayPal, Venmo, and Zelle.

Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

2023

Services offered

Service type

Equipment type(s)

Treadmill

Stair climber

Elliptical

Exercise bike

Projects and media

Reviews

Customers rated this pro highly for work quality, professionalism, and responsiveness.

Very good 4.6

284 reviews

5

86%

4

4%

3

2%

2

2%

1

6%

Read reviews that mention:

KuTina R.

5 days ago

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Hired on Thumbtack

Val is an Awesome repairman. He is very professional and knows his craft. I will call him for all my repairs. Thanks Val!

Details: Alternator repair or replacement • Car or crossover • Ford • I will provide the car parts

Mobile Auto Mechanic

Patrick R.

Dec 19, 2025

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Hired on Thumbtack

Great experience from start to finish. The repair work was done well, communication was clear and prompt, and he was timely and professional. I would absolutely use his services again.

Details: 2 - 5 hours (A few different projects) • Repairs • Installation • Bathroom • Walls (inside) • Cabinets • Plumbing • Home

Handyman

Madeline M.

Dec 12, 2025

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Hired on Thumbtack

Val did a great job installing three Container Store Elfa reach in closets as well as building a bookshelf and anchoring it to the wall. He spent all day working hard, came to us when there were any issues with the supplies, and cut shelving that was incorrectly sized. He fit us in easily and came prepared with a van full of equipment to make sure the job could be done. Super nice guy!

Details: Install a closet organizer or shelving system • Laundry/utility room • Entryway • Residential

Closet and Shelving System Installation

Mark D.

Oct 7, 2025

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Hired on Thumbtack

Val set up a virtual wood shop in my driveway and made a tricky repair of a broken interior door look easy. Couldn't be happier with his work. Five stars plus.

Details: Interior door (e.g. bedroom door, closet door) • Basic door (swings open and shut) • Wood • Home

Door Repair

Casey W.

Aug 2, 2025

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Hired on Thumbtack

Before initiating the original repair I hired him for, he exhausted all possibilities for the issue and found the solution was something very simple and far less costly. He solved a problem other professionals could not. Very pleased with the result.

Details: Fixture or outlet not working • Outlets • Wiring • Lights • 8 - 10 feet (standard ceiling) • Townhouse

Electrical and Wiring Repair

Credentials

Background Check

Valeriy Agafonov

FAQs

What should the customer know about your pricing (e.g., discounts, fees)?
Most of our services fee $170 which includes inspection of the unit/equipment/houses/area of works. We diagnose why your stove, dishwasher, dryer, refrigerator, lawnmower, grill, etc not working. Find right parts or materials and order them.
What is your typical process for working with a new customer?
When we received request or booking from new customers and scoop of work not clearly explain in description, we ask customer to explain details of work. Asking pictures of the area of work. Model number of the equipment.
What education and/or training do you have that relates to your work?
For the construction work (woodwork, electrical, plumbing) I have around 16 years of experience For the equipment work I have 8 years of experience working with different of electronics For lawnmower I have directly 6 years of experience + 6 years I fixed helicopter and 13 years military ground vehicles including generators.