Plum home addition by AllTrades Contracting Group on a hillside lot
Plum Borough · 15239

Additions & ADUsin Plum, PA

Holiday Park broke ground in 1959, and Plum kept building through the seventies. Many of those houses now hold families bigger, or older, than the ones they were drawn for. Our carpenters read the borough's setbacks and the slope of your lot, then add the room the house is missing.

Plum Additions

Boom-era houses,on hills that move.

The borough's houses date to 1972 at the median, and the sixties built more of them than any other decade. Three-quarters count three bedrooms or four, in a borough where steep ground is common.

  1. A Holiday Park house, one room bigger

    Owners in Plum's sixties neighborhoods often have one living room for everyone. They want a den or family room big enough for a sectional, a TV wall and the whole family at once.

    How we build it

    The room goes behind the kitchen or off the living room on its own footings, with the floor running through without a step, and carry the opened wall's load on a new beam. The roof slope and siding follow the original house.

    Room additions
  2. Moving the bedroom downstairs

    Across the borough, 38% of owned homes have a householder 65 or over. When stairs start to hurt, they want to sleep and bathe on the entry floor and leave every other room as it is.

    How we build it

    A single-level wing with a walk-in shower you can roll into, a seat built into the wall, solid blocking for rails, and a short, bright path to the kitchen. Any kitchenette for a parent goes past the borough first.

    Primary suite additions
  3. Four bedrooms for five people

    Every second house in the borough is a three-bedroom, and children live in 30% of its households. When a third child shares a room with a teenager, parents start asking what it takes to add a fourth.

    How we build it

    A bedroom wing with a closet and a second bath, or a bedroom set above a new den. If the bath is new plumbing, Allegheny County approves its plan before we start, and we prepare that drawing too.

    Room additions
  4. Building where the yard slopes

    Slides closed Boda Road in 2018, and four Plum roads were shut for slide repairs in 2023. Owners on sloping lots want more room but ask, reasonably, whether their ground can take a new foundation.

    How we build it

    We study the grade, where water arrives from uphill and where it drains away, and call an engineer in when the slope is steep. Footings step with the ground, and drainage around the new wall is part of the plan, not an afterthought.

    What we check first
  5. Shade and shelter out back

    A concrete patio or an open porch out back is fine until July sun or a summer storm. Owners want it roofed, or screened and glazed into a three-season room.

    How we build it

    Plum puts porches and porch roofs on its building permit list, so we file first. Then posts on proper footings, a roof framed into the house and flashed at the wall, with screens or glass added if you'd like it enclosed.

    Sunrooms
  6. A two-car garage out back

    Some borough lots have a one-car garage under the house or none at all. Owners want a freestanding garage for two cars and the mower, and wonder how near the property line it may go.

    How we build it

    A detached garage over 400 square feet stays at least 7.5 feet from every property line, and the borough allows one per lot. We pour the slab, frame it and wire it, and count it against your lot coverage first.

    Garage builds

Homes and households: Census Bureau, ACS 2020–2024, Plum Borough. Setbacks and garages: Plum's zoning quick reference guide (Ord. 916-17).

The rest of the job

How it runs, what it costs and who builds it are on our main additions & adus page.

Adding On in Plum

Two permits, two districtsand slopes over 25%.

An addition in Plum answers to the borough and, if it has plumbing, to Allegheny County. The zoning district sets how close to the lines it can go, and steep ground gets its own scrutiny.

  1. Porch roofsOn the borough's permit list

    Borough and county permits

    Additions, porches and porch roofs need a Plum building permit, while a new bath or laundry adds a county plumbing review, with plans approved first. Plum's kitchen remodeling page shows how the two fit together. Both sets of paperwork are ours.

    Plum's two approvals
  2. 7.5 ftSide setback, Suburban Residential

    Suburban or rural yards

    Suburban Residential lots keep 30 feet in front and back, 7.5 at each side, and 25% coverage. Rural Residential is roomier: 50 feet front and rear, 30 at the sides, 20% coverage. Houses top out at 35 feet in both. We check which applies first.

    Plum zoning quick reference (PDF) (opens in a new tab)
  3. 25%Slope Plum's zoning flags as critical

    Ground the code calls critical

    Plum's zoning ordinance treats slopes steeper than 25% as critical areas, and old coal workings lie under most of Plum as well. On a lot like that, we have the ground looked at by an engineer and keep the new footings off the worst of it.

    Mining and slides in Plum

Addition Questions

Plum additions,a few straight answers.

Plum owners usually bring these up at the first visit. Everything else about the build lives on the additions and ADUs page.

Ask a Question
[ 01 ]How is a Plum addition priced?

Mostly the ground and the plumbing. A dry, gently sloped lot and a room with no water lines is the easier case; a hillside foundation, an engineer's report, a new bath under county review or a second floor push it higher. A written number follows our first look at the site.

Addition price ranges
[ 02 ]Does the driveway count toward lot coverage?

It does. Plum counts accessory buildings and impervious surfaces, paving included, toward the district's coverage limit, along with the house. On a lot near 25% already, a new room may mean trimming a patio or a parking pad. We total it up before you commit.

Plum zoning quick reference (PDF) (opens in a new tab)
[ 03 ]Can we have a shed and a detached garage?

Yes, one of each. The borough allows no more than one accessory structure of each type on a lot, so a second shed or second garage is out. Under 200 square feet, a building takes a zoning certificate; at 200 or more, a full building permit.

Garage builds
[ 04 ]Does the bathroom in the addition need county approval?

Yes. Allegheny County approves each new plumbing plan in the borough before pipe goes in, then inspects as it's installed, apart from the borough's own permit. Fees and steps are on Plum's bathroom remodeling page, and we take care of the filing.

County plumbing in Plum
[ 05 ]With so much mining under Plum, is a foundation safe?

It can be, with the right checks. Old workings lie under roughly four-fifths of the borough on the state's records, and homeowner's policies exclude subsidence. Check your parcel, consider a state-backed subsidence policy, and the footings get designed around what the dig turns up.

Mining in Plum

Verified Google Reviews

The word fromhomes and job sites.

5.0 out of 5 · 17 reviews

Written by the homeowners we've worked for across Westmoreland County. Every one verified on Google, every one pulled from the real feed.

“I couldn't recommend the All Trades team more! They did a wonderful job on the drywall and tile for a bedroom and bathroom remodel. They were responded to me quickly, were kind and easy to work with, efficient and attentive to detail. They checked in along the way to make sure we were on the same page about the project. I couldn't be happier with how it turned out!”

J

Jenna Gorsich

Sep 2026

“I would highly recommend AllTrades Contracting Group. They were easy to work with. Very reliable and dependable! Brison and Vinny were very detail oriented! I am so pleased with my new bathroom!!! I will definitely be calling them again in the near future for other projects!! Thank you!!”

G

Gina Krejdovsky

Aug 2026

“James and Brison did an excellent job on a small repair for me. They got me scheduled with very short notice, were very professional and prompt. The repair I needed looks great. I appreciate they still put so much care into a small job and my house is all the better for it. 10/10 would definitely hire again.”

C

C. K.

Jul 2026

“What a fantastic experience from start to finish! From the initial quote to the completed project, everything exceeded my expectations. The team was professional, communicative, and provided valuable input and recommendations throughout the entire process. Their attention to detail and commitment to quality truly stood out. I highly recommend this business to anyone looking for reliable, high-quality contracting services!”

A

Andora Weglein

Jul 2026

“My wife and I have been kicking around the idea to get our master bathroom remodeled for the last couple of years but never pulled the trigger. While getting a roof repair done due to some windstorms, I asked the gentleman for some bathroom remodel references and he gave me AllTrades contact info. I met with James and he was really good about understanding what we wanted to do. He allowed us to feel comfortable and confident in his teams ability to get us what we wanted. Once we agreed on the quotes (very detailed and broken down) the work started within days. This was a full gut and remodel which involved moving some plumbing and closing up a window and cutting in a new one on a different wall. The two gentleman doing the job were fantastic. Super nice and cordial to my whole family. Brison and Vinny, thank you for making my family feel safe while you were transforming our bathroom into a much more functional and beautiful space! This group does all kinds of work as isn't limited to just bathrooms. I recommend you at least speak to them and get some quotes for any work you are looking to get done.”

J

Justin

Jun 2026

“I've had the pleasure of working with James for half a decade now. He's a professional, timely, down to earth, and his attention to detail is unmatched.”

W

Western Nights

Apr 2026

“I couldn't be more impressed with the work they have done. The quality and attention to detail is outstanding, and everything was completed with true craftsmanship and care. The team was professional, efficient, and clearly takes pride in what they do. The final result exceeded expectations, and it completely transformed the space. Highly recommend to anyone looking for top-notch remodeling work. You will be in great hands!”

E

Ethan Kisan

Mar 2026

“James and his team are amazing!”

T

Thor Chandler

Mar 2026

“Excellent office build out work on all accounts! From commercial spaces to residential work this group is professional, fast and affordable. Give them a shot!”

M

Max Kisan

Mar 2026

“Dependable work at a great price. I would highly recommend giving these guys a call.”

G

Genre Baker

Mar 2026

“James, Brison and their team are exceptional. From start to finish you won't find someone as good as these guys. Attention to detail and their quality of work speaks volumes about these guys characters. 10 stars.”

J

Jared G

Mar 2026

“These guys do fantastic work!!”

A

Autumn Hodgkiss

Mar 2026

“James and Brison are the best! I've been working with them for 2 years, and it's been nothing but a great experience! I'm so excited to continue following them on this new business venture. These guys really know what they're doing and have a passion for what they do. Guaranteed high quality work from the best in the business!”

V

Victoria Breeding

Mar 2026

“I've had the pleasure working with James and Brison in the past! I have nothing but good things to say about them work ethic, customer service, and craftsmanship! 10/10”

C

Cody Smith

Mar 2026

Get in Touch

Start the project.Call us today.

Tell us about the project in the form or give us a call. Either way, estimates are free and the number is the number — priced to the actual work, written down before anyone swings a hammer.

Request an Estimate

Tell us about your project.

We'll follow up within one business day with a walkthrough window and the next steps on getting a real number.