CornerStone77 LLC
CornerStone77 LLC

CornerStone77 LLC

$170/service call
estimated price

6 open slots

in the next 3 days

A service call at your home will allow the pro to identify the issue and get you an accurate quote. They can usually do the job same-day.

Responds in about 4 hours

Introduction: 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.

Hired 151 times

Serves Ashburn, VA

Background checked

1 employee

5 years in business

Business hours

SunClosedMon9:00 am - 9:00 pm

Scheduling policy

You can reserve this pro up to 28 days in advance. They'll need at least Read more

Payment methods

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Pay your pro simply and securely through the app.

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

Featured Projects

64 photos

  • Assemble playground

    Play Equipment Construction and Assembly

  • Val took care of my treadmill disassembly rather q

  • I don't write too many reviews but I had to for th

Appliance type

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

Very good 4.6

51 reviews


Read reviews that mention:

pro avatar
Casey D.
Oct 18, 2023

Hired on Thumbtack

Hired on Thumbtack

I had an excellent experience with Val. He was available the same day I needed his services, which was a huge relief. The task involved installing two new kitchen appliances in my older kitchen, which turned out to be more complex than anticipated. However, Val's quick thinking and problem-solving skills were impressive. He made the necessary modifications and completed the job efficiently. I highly recommend Val for anyone in need of a reliable and resourceful professional. I'll definitely use him for future projects.

Details: Oven / stove • Electricity

Appliance Installation
pro avatar
Aaron M.
Sep 16, 2023

Hired on Thumbtack

Hired on Thumbtack

Val was great to work with. He was very communicative, and repaired my grill without issue. It was a charcoal gravity fed grill that needed an air intake replaced. Val assessed and fixed very promptly, and patiently waited while I tested to confirm it worked properly. I look forward to working with Val again on other projects.

Details: Repair • Charcoal • Residential

Barbecue and Grill Services
pro avatar
Bertrand G.
May 18, 2023

Hired on Thumbtack

Hired on Thumbtack

Val from CornerStone777 was excellent! He brought all of the tools and parts that he needed to complete my requests with him. I needed an overall tuneup of my John Deere Zero-turn riding mower, including a blade sharpening, steering adjustment, and repair of the blade height adjustment controller. Val took care of all of the requested services plus changed the oil and filter, cleaned the mower and left it not purring but ROARING. The mower has been tuned up before, but Val left the mower running better than when I first bought it. Great service for the price. And you can't beat the convenience of having a fully equipped van pull up to your driveway and take care of your repairs, saving me the hassle and/or expense of transporting the mower across town. Val is all about providing a high quality of service. He took his time and did the job right. He provided the best value for service around. I will highly recommend CornerStone 777 and use them again for my lawn mower repair and other handyman stuff. Thanks Val.

Details: Riding • Blades damaged / need sharpening • My home, venue, etc.

Lawn Mower Repair
pro avatar
Eric U.
Apr 28, 2023

Hired on Thumbtack

Hired on Thumbtack

Was contemplating replacing my Sole E35 elliptical with a new one after repeated "motor error" flashing across the display panel. Of course finding a similar spec elliptical of that build quality would put me back by a little over a grand. So, I decided to take my chance on a repair instead. Found Cornerstone LLC here on thumbtack. Very professional And he knows his stuff. Did a diagnostics to isolate the problem, ordered the parts and voila, elliptical working as good as new. Would recommend him for anyone needing a fitness machine service or repair.

Details: Repair • Elliptical • Home / personal equipment

Exercise Equipment Repair
pro avatar
Michele S.
Apr 26, 2023

Hired on Thumbtack

Hired on Thumbtack

I don't write too many reviews but I had to for this amazing job Val pulled off. We hired him to deassemble, reassemble and transport a large Amish built playset/playhouse. We got quotes from multiple people, but Val's competitive pricing and positive reviews is why we went with him. The playset was huge and all nailed together. Val took it apart board by board and basically had to reconstruct it from nothing. I was so worried this might be too much to ask of an old playset but Val shocked me and he got it built back up in just a couple days by himself! He was so professional, worked hard and went above and beyond. I think he did just as good or better than the group of Amish workers who initially built this! I would hire Val for any of my home improvements/home maintenence jobs. Thank you Val! My kids are super happy!

Details: Assemble and install play equipment • Playhouse/Playset • Business/day care

Play Equipment Construction and Assembly
Background Check

Valeriy Agafonov

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