About Keystone

Quality Craftmanship that you deserve.

Keystone Home Remodeling is a full service remodeling contractor located in the Greater Philadelphia Area with a focus on kitchen and bathroom renovations.

We are on a mission to deliver you the highest quality product and experience through thoughtful design and detailed execution.

We strive to truly “Keep Craft Alive.”

About Brendan

“The Keystone Carpenter”

Brendan O’Sullivan is a second generation carpenter and general contractor who takes the hands on approach with every project.

After earning his degree from Eastern University in Business Management, Brendan decided to continue pursuing his passion for the trade and create Keystone Home Remodeling. He is focused on the details in all areas of his work and sees the value in using long-lasting quality products and tools. Brendan has also learned over the years by aligning himself with very talented designers not only creates a beautiful and functional space, but allows for the project to flow smoother and provides a more enjoyable renovation experience for the client.

#DailyCraft

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After a bunch of demo, framing, plumbing and electrical we’re finally heading into the next phase of this bathroom project! • • • #bathroom #bathroomremodel #remodeling #westchester #construction #remodel
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After a bunch of demo, framing, plumbing and electrical we’re finally heading into the next...

Havertown bath. • • • • #bathroom #bathroomrenovation #interiordesign #bathroomdesign #construction #homeimprovement
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Havertown bath. • • • • #bathroom #bathroomrenovation #interiordesign #bathroomdesign #construction #homeimprovement

Here’s a look at the finished bathroom we expanded and completely transformed! • • • • #bathroom #bathroomreno #bathroomremodel #homeimprovement #remodeling #construction #design #interiordesign #modern #contemporary
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Here’s a look at the finished bathroom we expanded and completely transformed! • • •...

Mitered niche with shelf. • • • • #tile #bathroom #shampooniche #niche #bathroomremodel #construction #remodel #renovation
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Mitered niche with shelf. • • • • #tile #bathroom #shampooniche #niche #bathroomremodel #construction #remodel...

It looks like @boldbrewdesign is getting comfortable in his new backyard office we built this year! • I’ve been using @boldbrewdesign for all my web/graphic needs over the years and really pleased with the custom and personal attention he puts into all his work. Need some web or graphics done? Hit him up. • • • • #backyardoffice #webdesign #website #graphics #construction #contractor #homeimprovement
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It looks like @boldbrewdesign is getting comfortable in his new backyard office we built this...

Not everyday you see a bathroom with osb for walls? I’ll be installing the fully waterproof (vapor barrier as well) @designbyfibo wall panels throughout which require a solid surface to be fastened. Stay tuned. • • • #bathroom #bathroomrenovation #homeimprovement #fibo #designbyfibo #contractor #construction #design
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Not everyday you see a bathroom with osb for walls? I’ll be installing the fully...

Inspections passed. Ready to close up floors/walls/ceilings. 💪
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Inspections passed. Ready to close up floors/walls/ceilings. 💪

I forgot about this pretty cool find when I renovated my in-law’s 1903 kitchen back in 2016. This quarter from 1894 has 90% silver content and is worth about $15 in average condition, but could be worth hundreds in mint condition (from what I’ve seen online). • • • • #oldcurrency #american #quarter
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I forgot about this pretty cool find when I renovated my in-law’s 1903 kitchen back...

6,100 lbs of debris removed from the 100 year old 6x10 bathroom. We stole a small closet from the office to expand the footprint slightly. Lots of work ahead of us!
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6,100 lbs of debris removed from the 100 year old 6x10 bathroom. We stole a...

Besides the land/hardscaping, this backyard office build is complete. We decided not to cheap out and went with all pvc trim and corner boards, pre painted hardie siding, Andersen windows, epdm roof, all spray foam insulation, and a Mitsubishi heat pump split system. I think the door color gives it a nice pop against the iron gray siding 😊. • • • #backyardoffice #office #backyard
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Besides the land/hardscaping, this backyard office build is complete. We decided not to cheap out...

Here we took the laundry from the first floor and moved it to the master bedroom walk-in closet. We repurposed a sitting room in the master bedroom as the new closet by narrowing the opening and installing a California Closet system. The downstairs laundry room will now be converted into a mudroom. • • • • #laundryroom #laundry #mudroom #renovation #homeimprovement #construction
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Here we took the laundry from the first floor and moved it to the master...

The “temporary” toilet/shower setup is complete for an upcoming renovation we’re doing in a home with only one bathroom. This basement has a 79” ceiling height and won’t be finished. The extremely low ceiling also required us to use a Saniflo toilet to pump the water up into the main sewer line. A higher ceiling would have allowed us to build a tall enough platform to use gravity instead in this particular situation.
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The “temporary” toilet/shower setup is complete for an upcoming renovation we’re doing in a home...

And the blue kitchen is a wrap! This was quite the transformation. • • Designer: @kaestnerdesigns • • • #kitchenremodel #kitchen #kitchenrenovation #kitchendesign #remodel #homeimprovement
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And the blue kitchen is a wrap! This was quite the transformation. • • Designer:...

After looking at cabinets without any mouldings for months it’s really nice to see how they transform. • • • • #kitchen #renovation #crownmolding #kitchenremodel #plymouthmeeting #pennsylvania
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After looking at cabinets without any mouldings for months it’s really nice to see how...

We are moving right along at our Plymouth kitchen renovation. Cabinets and flooring are installed, countertop fabrication is in the works, and next week I will start trimming windows. Once tops and window casings are in, backsplash tiling can begin. 💪 • @kaestnerdesigns • • • • #kitchenrenovation #kitchenremodel #design #kitchendesign #contractor #homeimprovement #renovation #remodel #plymouthmeeting #berwyn #radnor #wayne #collegeville #malvern #chestersprings #bluebell #pennsylvania
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We are moving right along at our Plymouth kitchen renovation. Cabinets and flooring are installed,...

The space is primed and the new ProVia windows are in. We are ready to start installing cabinets today! Big day. • • • • #kitchen #kitchenrenovation #kitchenremodel #remodeling #kitchendesign #paint #provia #construction #contractor #plymouthmeeting #pennsylvania
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The space is primed and the new ProVia windows are in. We are ready to...

I made some decent progress on the backyard office this week. One more wall of @jameshardie siding to go 💪. • • • • #backyardoffice #office #backyard #jameshardie #hardie #azek #andersen #thermatrudoors #homeimprovement #construction #contractor #quality #sheshed #mancave
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I made some decent progress on the backyard office this week. One more wall of...

Drywall is finished and we’re ready for some primer. I like to get at least a base coat of primer on the walls before cabinets go in so that we can see and correct any potential bigger imperfections but also protect the bare compound. What’s your order of events? • • • • #kitchen #kitchenremodel #kitchendesign #remodeling #homeimprovement #contractor #plymouthmeeting #pennsylvania
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Drywall is finished and we’re ready for some primer. I like to get at least...

The backyard office build is progressing nicely. All the trim boards are installed and the @jameshardie siding (iron gray) going up. Rough electrical next up. The building is 10’x16’ anchored to a monolithic slab with footer (photo). We installed pressure treated 2x4 sleepers on the flat with rigid insulation in between (photo) and a layer of Advantec subfloor. Sill seal and caulk around the perimeter. Besides the requirement of a slab by the township because the structure was over 120sf, we wanted a slab so critters and rodents could not burrow underneath. It’s very common for animals to take refuge under a shed because most are open underneath. This could be a little annoying for someone working in the space all day. It is 2x6 framed so we’ll be using @rockwoolna R23 and R30 for increased sound reduction. A @mitsubishihvac 9k heat pump and 24 seer condenser will be installed to condition the space. The interior will be finished with drywall and LVP. We have used premium materials and more labor intensive building practices to construct this office, so something this size expect to spend around $50-60k to start. You can use less expensive materials to save some money, but the goal for this project was to build something that not only had less annual maintenance but looked good and will last a long time. • • • • #backyardoffice #sheshed #mancave #office #azek #jameshardie #newconstruction #landscaping #contractor #homeimprovement #plymouthmeeting #pennsylvania
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The backyard office build is progressing nicely. All the trim boards are installed and the...

We are finally at drywall stage after a couple months of reframing floors/walls/ceiling, all rough trades, inspections, and holiday vacation! Board goes up tomorrow morning. • • • • #kitchen #kitchenrenovation #renovation #homeimprovement #plymouthmeeting #remodel #contractor #framing #electrical #drywall #pennsylvania
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We are finally at drywall stage after a couple months of reframing floors/walls/ceiling, all rough...