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Addition to existing structure builders in Centralia
With over 30 years of experience in the general contracting Industry, we are the experts you need to take care of your home or business. We handle everything from remodels to deck/porch builds. We will treat your home or business as we would treat our own. Give Harmon & Harmon Consulting a call today, we look forward to working with you!
"I recommend Dennis (Harmon & Harmon) in the strongest terms for a renovation, upgrade, or any other construction in your home. I hired Harmon & Harmon for some upgrades/repairs in a home I recently bought, including a major renovation of my attic (dark, unfinished space, bare studs) to be a fully finished room. Dennis saw the potential of the attic (which was huge & very open). Now fully finished, the attic has a beautiful composite wood-grain floor, finished walls, recessed lighting, full climate control with a mini-split, and he was even able to add a window with a view to the water. It is a huge room that now functions as a TV room for the kids with a big sectional couch, one corner is an extra closet/storage nook for my wife, & the gabled window area has table & chairs for reading and enjoying the view. Best thing about Dennis... 100% follow-through, 100% satisfaction. If I had an issue, he fixed it, period. Outstanding professionalism from start to finish. A+, 10/10!"
Daniel M on February 2025
With over 30 years of experience in the general contracting Industry, we are the experts you need to take care of your home or business. We handle everything from remodels to deck/porch builds. We will treat your home or business as we would treat our own. Give Harmon & Harmon Consulting a call today, we look forward to working with you!
"I recommend Dennis (Harmon & Harmon) in the strongest terms for a renovation, upgrade, or any other construction in your home. I hired Harmon & Harmon for some upgrades/repairs in a home I recently bought, including a major renovation of my attic (dark, unfinished space, bare studs) to be a fully finished room. Dennis saw the potential of the attic (which was huge & very open). Now fully finished, the attic has a beautiful composite wood-grain floor, finished walls, recessed lighting, full climate control with a mini-split, and he was even able to add a window with a view to the water. It is a huge room that now functions as a TV room for the kids with a big sectional couch, one corner is an extra closet/storage nook for my wife, & the gabled window area has table & chairs for reading and enjoying the view. Best thing about Dennis... 100% follow-through, 100% satisfaction. If I had an issue, he fixed it, period. Outstanding professionalism from start to finish. A+, 10/10!"
Daniel M on February 2025
Koi Construction, LLC, originally established as HK Design & Remodeling and M&I Property Services, has always started from modest beginnings. Our core belief is that true success comes from engaging passionately in our work, rather than being driven by financial motives. We are committed to excelling in our projects, making a distinct mark through exceptional performance. Our unwavering focus remains on outstanding client service and superior craftsmanship. Despite our growth, we steadfastly adhere to our fundamental mission: "To achieve ongoing success by ensuring client satisfaction, delivering high-quality services, and upholding genuine integrity, all of which culminate in the finest craftsmanship."
"The whole experience was excellent. Chris when to give us a bid. He was very knowledgeable. He told use about the triangle of stove, fridge and sink and flow. He suggested a long narrow window to replace the tile backsplash on an outside wall. It was a great idea. When sit at the new bar between the kitchen and the living room we look out into our backyard. Itâ s beautiful. The guys that did the work are extremely work oriented. They are constantly working. They were thorough, knowledgeable and open to our suggestions and requests. We wanted an additional can light no problem. They were great. They cleaned up every day before they left. They would tell use when they were going to arrive and what they planned to accomplish that day. I have old siding on the outside of my house. They matched it perfectly when eliminated a window. The price of the cabinets was a lot more reasonable the other bids and theyâ re beautiful. What I mentally pictured in my mind on how it would look and the ease of preparing meals in the new kitchen were so wrong. Itâ s at least 10 times better. It still has the same physical dimensions but how itâ s played out. It seems so much bigger. I highly recommend them for any project you need done"
Woody W on September 2024
Koi Construction, LLC, originally established as HK Design & Remodeling and M&I Property Services, has always started from modest beginnings. Our core belief is that true success comes from engaging passionately in our work, rather than being driven by financial motives. We are committed to excelling in our projects, making a distinct mark through exceptional performance. Our unwavering focus remains on outstanding client service and superior craftsmanship. Despite our growth, we steadfastly adhere to our fundamental mission: "To achieve ongoing success by ensuring client satisfaction, delivering high-quality services, and upholding genuine integrity, all of which culminate in the finest craftsmanship."
"The whole experience was excellent. Chris when to give us a bid. He was very knowledgeable. He told use about the triangle of stove, fridge and sink and flow. He suggested a long narrow window to replace the tile backsplash on an outside wall. It was a great idea. When sit at the new bar between the kitchen and the living room we look out into our backyard. Itâ s beautiful. The guys that did the work are extremely work oriented. They are constantly working. They were thorough, knowledgeable and open to our suggestions and requests. We wanted an additional can light no problem. They were great. They cleaned up every day before they left. They would tell use when they were going to arrive and what they planned to accomplish that day. I have old siding on the outside of my house. They matched it perfectly when eliminated a window. The price of the cabinets was a lot more reasonable the other bids and theyâ re beautiful. What I mentally pictured in my mind on how it would look and the ease of preparing meals in the new kitchen were so wrong. Itâ s at least 10 times better. It still has the same physical dimensions but how itâ s played out. It seems so much bigger. I highly recommend them for any project you need done"
Woody W on September 2024
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Very professional and efficient. We had a great experience!"
Samantha S on March 2024
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Very professional and efficient. We had a great experience!"
Samantha S on March 2024
Licensed, Bonded and Insured Let us help you complete your home projects, no matter how big or how small we can get it done. We are a local business out of Centralia WA. Doing all kinds of home improvements and renovations. *Residential & Commercial *Roofing & Siding *Insulation *Bathroom Remodels *Decks and more! We offer reliable, professional, friendly service, with free estimates.
"Leo was polite friendly and on time. His crew was also polite friendly and on time. They cleaned up afterwards and I am happy with the job. He even agreed to guaranteeing the roof will pass inspection when I sell my house. Great price."
Lydia R on March 2025
Licensed, Bonded and Insured Let us help you complete your home projects, no matter how big or how small we can get it done. We are a local business out of Centralia WA. Doing all kinds of home improvements and renovations. *Residential & Commercial *Roofing & Siding *Insulation *Bathroom Remodels *Decks and more! We offer reliable, professional, friendly service, with free estimates.
"Leo was polite friendly and on time. His crew was also polite friendly and on time. They cleaned up afterwards and I am happy with the job. He even agreed to guaranteeing the roof will pass inspection when I sell my house. Great price."
Lydia R on March 2025
We are a company built of third and fourth generation flooring installers. We know floors and we consider the installation an art. For your commercial or residential floor, we offer carpet, laminate, hard wood, LVP, VCT, sheet vinyl, tile and more! We also offer expert installation, carpet re-stretches and other repairs. Our installers are licensed general contractors and also offer certain home repairs, carpentry, water damage remediation and remodel / renovation services. We have an outstanding record of service! Give us a call and we will be happy to give you a quote on any job; large or small.
"Everything went good and the carpet looks great. Would definitely recommend Olympia Floor Source if you need your carpet done right."
Deon H on March 2025
We are a company built of third and fourth generation flooring installers. We know floors and we consider the installation an art. For your commercial or residential floor, we offer carpet, laminate, hard wood, LVP, VCT, sheet vinyl, tile and more! We also offer expert installation, carpet re-stretches and other repairs. Our installers are licensed general contractors and also offer certain home repairs, carpentry, water damage remediation and remodel / renovation services. We have an outstanding record of service! Give us a call and we will be happy to give you a quote on any job; large or small.
"Everything went good and the carpet looks great. Would definitely recommend Olympia Floor Source if you need your carpet done right."
Deon H on March 2025
At Legacy Construction we pride ourselves in honesty and integrity. Our projects reflect on our legacy for many generations to come. Family owned and operated with over 75 years of combined experience in all phases of residential/commercial construction, whether it be a remodel or a new build we complete our projects with a foreman/owner onsite daily. From small handyman projects to a 40,000 square foot tenant improvements one call does it all. We pride ourselves on staying within budget and keeping deadlines as promised.
"Legacy remodeled our kitchen, spare room, entryway, and added a closet. Everything was planned and completed fast and we loved how it turned out."
Haley F on April 2025
At Legacy Construction we pride ourselves in honesty and integrity. Our projects reflect on our legacy for many generations to come. Family owned and operated with over 75 years of combined experience in all phases of residential/commercial construction, whether it be a remodel or a new build we complete our projects with a foreman/owner onsite daily. From small handyman projects to a 40,000 square foot tenant improvements one call does it all. We pride ourselves on staying within budget and keeping deadlines as promised.
"Legacy remodeled our kitchen, spare room, entryway, and added a closet. Everything was planned and completed fast and we loved how it turned out."
Haley F on April 2025
I am known for my expertise and quality work that I do. I'm dependable, honest and provide good detailed work. Main types of projects that I work on are: stucco, any type of stucco -repair, leaking problems, decks, remodel kitchens and bathrooms , any remodel, build garages, additions, change windows, doors etc.
I am known for my expertise and quality work that I do. I'm dependable, honest and provide good detailed work. Main types of projects that I work on are: stucco, any type of stucco -repair, leaking problems, decks, remodel kitchens and bathrooms , any remodel, build garages, additions, change windows, doors etc.
At Handy Andy's Repair and Remodel, we specialize in providing value to our customers by performing quality repair and remodeling services. We take on all types of projects for both residential and commercial customers and pride ourselves on the quality and efficiency of those services, making your home or business improvements quick and easy! We believe that our customers should be paying for a result they are happy with, not the time it takes the contractor to perform the work they deem only good enough. If you are interested in working with us, please call or text (760) 927-2545 for scheduling. We look forward to serving you!
"Stayed on schedule. All projects completed. Cleaned up work area. Will use this person again when we have a remodeling project."
Merry Noel M on June 2025
At Handy Andy's Repair and Remodel, we specialize in providing value to our customers by performing quality repair and remodeling services. We take on all types of projects for both residential and commercial customers and pride ourselves on the quality and efficiency of those services, making your home or business improvements quick and easy! We believe that our customers should be paying for a result they are happy with, not the time it takes the contractor to perform the work they deem only good enough. If you are interested in working with us, please call or text (760) 927-2545 for scheduling. We look forward to serving you!
"Stayed on schedule. All projects completed. Cleaned up work area. Will use this person again when we have a remodeling project."
Merry Noel M on June 2025
Val's Handy is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 7 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
"Great service Thank's"
Maxim L on January 2025
Val's Handy is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 7 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
"Great service Thank's"
Maxim L on January 2025
We are a general contractor that focuses on the customers needs since 2002. Our primary goal is find solutions that fit into the clients time frame and budget. We work on remodels, rental renovations, handy mans services for general maintenance and repairs, drainage and sewer solutions, decking. Emergency Service. Big or small projects welcome. Let us fulfill your desired needs.
"Opportunity Construction will always be my #1 company to go to for my fencing needs. Here's the reason why. First, from start to finish, Dean Currow was very knowledgeable about installation of fencing. He displayed great customer service, professionalism, attention to details, and was so easy to work with. He was prompt; arriving on time each day. Second, his team of workers were exceptional! They were the best; working hard...non stop, until the last steel panel was in place. Opportunity Construction made my dream come true. They are an A++++ company. Last, I couldn't be happier with the installation. The fence looks beautiful, and from all of the drive-bys, I am sure this company will be receiving a few more calls."
patti b on June 2025
We are a general contractor that focuses on the customers needs since 2002. Our primary goal is find solutions that fit into the clients time frame and budget. We work on remodels, rental renovations, handy mans services for general maintenance and repairs, drainage and sewer solutions, decking. Emergency Service. Big or small projects welcome. Let us fulfill your desired needs.
"Opportunity Construction will always be my #1 company to go to for my fencing needs. Here's the reason why. First, from start to finish, Dean Currow was very knowledgeable about installation of fencing. He displayed great customer service, professionalism, attention to details, and was so easy to work with. He was prompt; arriving on time each day. Second, his team of workers were exceptional! They were the best; working hard...non stop, until the last steel panel was in place. Opportunity Construction made my dream come true. They are an A++++ company. Last, I couldn't be happier with the installation. The fence looks beautiful, and from all of the drive-bys, I am sure this company will be receiving a few more calls."
patti b on June 2025
FAQs for addition to existing structure building service projects in Centralia, WA
Yes, you can add a bathroom on a concrete slab, but the crew will need to saw-cut the slab, trench in new supply and drain lines, and then patch the concrete without weakening the foundation. Working with an experienced plumber and concrete pro keeps the structure intact and helps the new bathroom pass inspections.
schedule covers planning, permits, framing, rough-ins, finishes, and punch-list items.
Larger spaces or extensive plumbing and electrical upgrades can stretch the timeline, while a simple powder-room conversion may wrap up faster. Hiring licensed pros helps keep the schedule on track and the work up to code.
The best location depends on how your family uses the space. An upstairs bath keeps nighttime trips close to the bedrooms, while a first-floor powder room is handy for guests and everyday traffic.
Think about where plumbing lines already run, how much square footage you can spare, and what layout changes fit your budget. A pro can map out the smartest spot and handle any code hurdles.
With the right planning, you can carve out a bathroom in almost any part of the house. A successful addition requires sufficient space, proper ventilation, and access to plumbing and electrical systems. Structural modifications and adherence to building codes are essential.
This process demands careful planning and the coordination of specialized professionals who ensure that the new space meets all code requirements and functional needs.
Under specific conditions, adding an extra bedroom can boost home value more than adding a bathroom. Home value is driven by overall configuration, market demand, and functional balance. A new bedroom influences the property’s appeal in different ways, while an additional bathroom enhances living convenience. Evaluating the current layout and market trends determines the optimal choice for maximum value.
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