--- title: "Seilis Construction — General Contractors | Houzz" canonical_html_url: https://www.houzz.com/professionals/general-contractors/seilis-construction-pfvwus-pf~1765390771 markdown_url: https://www.houzz.com/md/professionals/pf~1765390771.md entity_type: LocalBusiness business_name: "Seilis Construction" category: ["General Contractors"] image: https://st.hzcdn.com/fimgs/4f0300e20e0f6afc_0188-w400-h400-b0-p0--.jpg address: "Innisfil, Ontario, Canada" phone: "(705) 730-8760" website: https://seilisconstruction.com rating: 5 review_count: 20 best_of_houzz_awards: 6 followers: 4 last_updated: 2026-09-24 --- # Seilis Construction > Comprehensive Home Remodeling Services in Innisfil Original Houzz profile: [Seilis Construction](https://www.houzz.com/professionals/general-contractors/seilis-construction-pfvwus-pf~1765390771) ## Professional summary - **Primary category:** General Contractors - **Location:** Innisfil, ON - **Serves:** Barrie, Gravenhurst, Innisfil, King City, Muskoka, Newmarket - **Houzz rating:** 5.0 out of 5 (20 reviews) - **Best of Houzz:** 6 awards (2021–2026), for Service. ## About ### Houzz Badges - Houzz Pro Software User - Recommended on Houzz - 25 Ideabook Saves - Best of Houzz winner - Family owned - Free estimate - Provides 3D Visualization ### Business highlights - Family owned - Best of Houzz winner - Free estimate - Provides 3D Visualization At Seilis Construction, we take pride in being a family-owned and operated business dedicated to completing high-end renovations, complex additions, and water front builds. Servicing the Simcoe Muskoka and northern GTA regions, we focus on delivering exceptional quality and craftsmanship in every project. Our commitment to completing projects on time and on budget sets us apart in the industry. Trust us to transform your vision into reality with our expertise and personalized approach. ### Services Provided - Home Remodeling - Kitchen Remodeling - General Contracting - Home Additions - Custom Homes - New Home Construction - Home Extensions - Accessory Dwelling Units (ADUs) - Deck Building - Guesthouse Design & Construction - Garage Building - Pool House Design & Construction - Porch Design & Construction - Multigenerational Homes - House Framing - Attic Conversion - Home Gym Design & Construction - Siding Installation - Sliding Door Installation - Trim Work - Shed Design & Construction - Cottage Renovations ### Areas Served - Barrie - Gravenhurst - Innisfil - King City - Muskoka - Newmarket ### Typical Job Cost CAD 200,000 - CAD 1,800,000 Large scale renovations and additions to custom builds ## Business Details | Field | Value | | --- | --- | | Business Name | Seilis Construction | | Address | Innisfil, Ontario, Canada | | Phone | (705) 730-8760 | | Website | https://seilisconstruction.com | | Followers on Houzz | 4 | **Social profiles:** - Facebook — https://www.facebook.com/seilisconstruction/ ## Contact - **Houzz profile:** [Seilis Construction](https://www.houzz.com/professionals/general-contractors/seilis-construction-pfvwus-pf~1765390771) - **Website:** https://seilisconstruction.com - **Phone:** (705) 730-8760 ## Credentials - **Best of Houzz:** 6 awards (2021–2026), for Service. ## Reviews **Overall rating: 5.0 out of 5 — 20 reviews** *Aspect averages:* - Work Quality: 5.0 - Communication: 4.9 - Value: 4.9 ### Featured Review **★★★★★ — Cliff Perkins, Jan. 2020** > Seilis Construction did the work in my home like they were the home owners. They built a new bedroom in the basement and made a large bedroom that used to be 2 rooms back to 2 rooms. The did a fantastic job at matching trim and paint colors for the work on the existing room changes and the suggestions for lights, trim, windows in the new room built was very helpful in achieving the end results. Everything was completed on time and budget. > As i said in the beginning , the work was done like they were going to be living in the rooms rather than just building them for us. ### All 20 reviews **★★★★★ — Steve Ingram, July 2025** > Kalven and his crew recently completely renovated the entire main floor of my house plus a laundry and bathroom in the basement. This included new hardwood and tile flooring in all rooms, new kitchen, bathroom, trim and doors, removing the popcorn ceiling in all rooms. painting all rooms, pot lighting, light fixtures and upgraded electrical service. I couldn't be happier with the end result! The quality of workmanship and attention to detail is top notch and the project was completed within the timeframe specified in the contract. Communication was outstanding and unlike anything I have ever experienced when dealing with a contractor. From the initial meeting to discuss the scope of work and throughout the project, Kalven was quick to respond to any questions I had. Any areas of concern were brought to my attention immediately and we worked to find a solution. As I was away during the first phase of the project, Kalven would send me progress videos every day. Kalven and crew were always on time every day and the work site was left clean at the end of the day. They were professional, highly skilled, friendly, accommodating and very easy to communicate with. This was also true of any sub-contractors Kalven brought on-site. > > I am so pleased that I went with Seilis Construction and am thrilled with my newly renovated home. I highly recommend them. They really set the bar high and deliver an outstanding product. You won't be disappointed if you choose them for your next project. **★★★★★ — Tom Lawson, Jan. 2025** > I could not speak more highly about a construction team than this one. Kalven and his team of professionals are honest, clear spoken, talented and understanding. They completed our cottage addition on time and to impeccable standards, in spite of record Muskoka snowfalls. Of the half dozen contracted projects we have entered, this has been by far the most enjoyable. > > Tom Lawson > General (Ret’d) **★★★★★ — Kitchen Reno, Aug. 2024** > Very professional and respectful. Seilis Construction exceeded our expectations when it came to our kitchen renovation! Would absolutely recommend them. **★★★★★ — Patrice, Aug. 2024** > We were absolutely impressed with the quality of work that Kalven and his crew completed for us. Their attention to detail was excellent and the project was completed in a good timeframe. Communication and product details were excellent. We always felt in the loop with what the crew was working on throughout the project. **★★★★★ — CATHERINE LILLYWHITE, Aug. 2024** > HI Kalven, > We are so thrilled to be able to give you a great review after the work you have done for us. > > Seilis Construction is the BEST!. On time, on budget and extremely precise. > They do exceptional work in our case a beautiful living room, connecting our cottage to the bunkie and converted > a fit to be torn down bunkie into a stunning master suite, correcting the architects error filled plans along the away. > If you can get them you will not be disappointed. > > Thank you and take care > > Sincerely, > John & Catherine Lillywhite **★★★★★ — HU-211695093, June 2024** > Amazing work by Seilis Construction on our home. Very detailed and tedious work prepping our exterior house/windows with new rigid insulation, strapping, trim, etc.. A new entryway/mudroom was also designed and built, adding a new closet, tile, and entryway for a future door. The crew was prompt, friendly, cleaned up the site well every day, and has allowed us to keep our next contractors on schedule for the rest of our home Reno’s. > > Great work to the team! **★★★★★ — Debbie, Nov. 2023** > Great company to work with. Seilis construction has complete 3 renovations for us and all have been excellent quality. I would highly recommend them. **★★★★★ — Bruce, July 2023** > We are very happy with the work that was done at our cottage and would definitely use Seilis Construction again. **★★★★★ — Marion Reive, July 2023** > We contracted with Seilis Construction to build a bathroom in our basement. We couldn’t have asked for it to have turned out any better. Kalven was so patient with the changes that had to be made by us several times before the project even started. He gave us great input on how to best utilize the space that would meet my husband’s mobility issues. Jake, who we dealt with on a daily basis, was exemplary in his work ethic, arrived before 8 AM every morning, worked all day, cleaned up at the end of each day, and his craftsmanship was spot on. The room looks like it was always meant to be there. Living in a home that is being renovated, even just a bathroom from a cement floor raw basement could be very stressful, but Kalven & Jake took ALL of the stress out of the experience. I would have them back in my home anytime if I need any further renovations done and I would 100% recommend them for any of your renovation needs. Thank you so much for a job well done, Kalven & Jake. **★★★★★ — Betty K, Nov. 2022** > We were incredibly fortunate to be referred to Seilis Construction when our previous contractor had to cancel our project at the last minute to renovate our cottage in Muskoka. Kalven and his crew worked throughout the winter on a challenging worksite to create a superbly rebuilt cottage, from the inside out. Kalven worked closely with us and always offered a range of options as decisions needed to be made. We spent this past summer thoroughly enjoying the finished product. The attention to detail and craftsmanship are evident throughout. We highly recommend Seilis Construction for any and all building and renovation projects. **★★★★★ — HU-684121406, June 2021** > We can’t express enough the gratitude we have for Kalven and his team at Seilis Construction for the stunning transformation they made to our home. From the initial design, their helpful suggestions and creativity, to their custom builds to their attention to detail - everything was above and beyond our expectations. Kalven was excellent at communicating next steps and adapted well to changes often providing excellent alternatives that worked well with the overall design. We stayed in our home during the renovation and although it was a work zone our livable space was always left clean and tidy. The project was finished on time and we can’t thank the entire Seilis Construction team enough for taking our house and turning it into our dream home. We are still in awe with the results and absolutely recommend Seilis Construction for any home project. **★★★★★ — mark\_mezzapelli, March 2021** > Where to begin! Everything from day one with Seilis Construction was professional, timely and structured. Throughout the planning process, Kalven was a great sounding board for advice and helped guide the process of the work we were planning for. Once the work started, Kalven and his crew worked efficiently and constantly kept us up to speed on the project process. When it came time to do our final walk through, we really saw the craftsmanship of Kalven and his team. The attention to detail was impressive, and overall product was stunning. It’s clear how special this company is. Can’t recommend them enough! **★★★★★ — Carol King, June 2020** > Seilis does an amazing job! They are good at making recommendations and do exactly what they say they are going to do. Their attitude is very professional and helpful. I have had so many wonderful compliments on my new kitchen and more recently my new bathroom. And every time I walk into my new bathroom I smile! Having dealt with a nightmare of a contractor for work on my sister's house, I was reminded never to take for granted what a great job Seilis Construction does! I would highly recommend them for anything you need done. **★★★★★ — Monica and Brian Conrad, March 2020** > Seilis Construction came to our rescue when we needed our basement finished on a tight timeline. Our vision included an open concept living space with a three-piece bathroom, finished laundry room, closets, enclosed mechanical room and storage space. > > Kalven listened to our ideas, made pertinent recommendations and provided us with a written quote and timeline. He and his team exceeded our expectations, accommodating all our wishes, exhibiting care and professionalism throughout. > > The project was finished on time and on budget. The work site was always tidy. Their attention to detail was impeccable and their craftsmanship was first class. > > We are thrilled with the amazing end result and highly recommend Seilis Construction. **★★★★★ — Pete Kendall, Jan. 2020** > Seilis Construction design team caught us by surprise when they suggested we expose the previously hidden fireplace chimney bricks in our 2nd floor Master Bedroom. We knew the brick would look amazing when painted, but we didn't realize the bricks would absorb heat from the fire below, and radiate heat into the Master throughout the bitter winter cottage nights. Many thanks to team Seilis! **★★★★★ — C LeBlanc, Jan. 2020** > I’ve contracted Kalven for the last 2 projects and he is amazing. The site was always tidy and his work well thought through sticking to timeline commitments. His craftsmanship is exceptional with considerable attention to detail. Even with a designer plan in hand, he made improvements to it that had been overlooked. Thank you for 2 very good experiences with your company. **★★★★★ — HU-407737905, Jan. 2020** > Kalven was very professional, efficient and trustworthy. He stuck to his quote and timeline while delivering exceptional service and keeping my living space clean and livable. I would HIGHLY recommend Seilis Construction to friends and family. **★★★★★ — Scott, Jan. 2020** > Kalven and his team at Seilis Construction completed a multi-room renovation for us. Right from the beginning Kalven was extremely professional and did an amazing job designing and building our vision. Him and his team were all hands on deck throughout the entire project, from taking our ideas, making recommendations to build on those ideas, turning them into a physical design, and completing the project on schedule and budget. Kalven kept communication open and ensured we knew what the next steps were at all times. On top of that, Kalven managed on the fly design change ideas incredibly by listening to what we were thinking and explaining how it would impact the overall design and project, allowing us to make fully informed decisions. Thank you Kalven, and the entire Seilis Construction team, for the amazing work. We would absolutely recommend you to others and will definitely be using you for other projects in the future! **★★★★★ — Janet Bye, Jan. 2020** > We have hired and worked with Seilis Construction on multiple occasions, and they have quickly become our go-to for any home renovation projects. Whether it is custom built-ins for storage in the basement or a custom design to tie in our gas fireplace, Kalven and the Seilis Construction team time and time again take our vision and bring it to life: on time and on budget. Kalven works with you to determine materials and cost while maintaining the integrity of your home and project (and for us, future sale potential!). I highly recommend hiring Seilis Construction for your next project! ## Selected projects - [Home Additions](https://www.houzz.com/hznb/projects/home-additions-pj-vj~7369207) - Location: Barrie, ON - Photos: 33 - [Accessory Dwelling Unit- Garage Conversion](https://www.houzz.com/hznb/projects/accessory-dwelling-unit-garage-conversion-pj-vj~7168325) - Location: Essa, ON - Photos: 13 - Description: Two car garage converted to into a luxury dwelling unit. At Seilis Construction we can help with every step of adding an ADU, from site selection to planning all the way through final construction. - [Main Floor Renovation 24](https://www.houzz.com/hznb/projects/main-floor-renovation-24-pj-vj~7686320) - Location: Not specified - Photos: 21 - [Shanty Bay Project](https://www.houzz.com/hznb/projects/shanty-bay-project-pj-vj~7345600) - Location: Shanty Bay, ON - Photos: 17 - [Glen Ellen, Washago](https://www.houzz.com/hznb/projects/glen-ellen-washago-pj-vj~7558451) - Location: Not specified - Photos: 41 - [Diana Way Project](https://www.houzz.com/hznb/projects/diana-way-project-pj-vj~6703580) - Location: Barrie, ON - Photos: 22 - [Hilltop 2.0](https://www.houzz.com/hznb/projects/hilltop-2-0-pj-vj~7162683) - Location: East Gwillimbury, ON - Photos: 26 - [Garage Addition](https://www.houzz.com/hznb/projects/garage-addition-pj-vj~7376244) - Location: Not specified - Photos: 9 - [Deforest Project](https://www.houzz.com/hznb/projects/deforest-project-pj-vj~6703476) - Location: Barrie, ON - Photos: 17 - [Redmills 2.0](https://www.houzz.com/hznb/projects/redmills-2-0-pj-vj~7162665) - Location: East Gwillimbury, ON - Photos: 9 - [Decks](https://www.houzz.com/hznb/projects/decks-pj-vj~7376220) - Location: Barrie, ON - Photos: 15 - [Viscount Project](https://www.houzz.com/hznb/projects/viscount-project-pj-vj~7163300) - Location: East Gwillimbury, ON - Photos: 24 - [Weldon Project](https://www.houzz.com/hznb/projects/weldon-project-pj-vj~6502158) - Location: Barrie, ON - Photos: 10 - [London Project](https://www.houzz.com/hznb/projects/london-project-pj-vj~6703452) - Location: Newmarket, ON - Photos: 17 - [Thorncrest Project](https://www.houzz.com/hznb/projects/thorncrest-project-pj-vj~6009619) - Location: Barrie, ON - Photos: 16 - Description: Entire home redesign and renovation. This 1970's home was renovated top to bottom, creating a modern farmhouse look. With all new electrical, engineered structural changes, brand new plumbing and finishes throughout, this home is turn key & move in ready for our clients. - [Larkin Project](https://www.houzz.com/hznb/projects/larkin-project-pj-vj~6011543) - Location: Not specified - Photos: 39 - [Red Mills Project](https://www.houzz.com/hznb/projects/red-mills-project-pj-vj~6011665) - Location: Not specified - Photos: 17 - [Haliburton Project](https://www.houzz.com/hznb/projects/haliburton-project-pj-vj~6502162) - Location: Carnarvon, ON - Photos: 14 - [Nelson Project](https://www.houzz.com/hznb/projects/nelson-project-pj-vj~6011602) - Location: Innisfil, ON - Photos: 36 - [Rhodes Project](https://www.houzz.com/hznb/projects/rhodes-project-pj-vj~6011515) - Location: Newmarket, ON - Photos: 6 [See all 22 projects](https://www.houzz.com/professionals/general-contractors/seilis-construction-pfvwus-pf~1765390771) ## Video - [Company video](https://player.vimeo.com/external/871166890.m3u8?s=b1482e8589f611e3f7faa4ea372e716aac2a859f&oauth2_token_id=1384357804) ## Frequently Asked Questions **Are you licensed, bonded, and insured?** Yes, we are fully licensed, bonded, and insured to operate as general contractors in Innisfil, ON, and the surrounding Simcoe Muskoka and northern GTA regions. This ensures peace of mind and protection for all our clients and projects. **Do you handle permits and inspections?** Absolutely. As part of our comprehensive general contracting services, we manage all necessary permits and coordinate inspections throughout your project. We ensure everything complies with local regulations in Innisfil, Simcoe Muskoka, and the northern GTA, making the process smooth for you. **What kind of projects you specialise in?** We specialize in high-end renovations, complex additions, and waterfront builds across Simcoe Muskoka and the northern GTA. Our expertise also includes custom homes, kitchen remodeling, ADUs, and cottage renovations. We focus on delivering exceptional quality and craftsmanship in every unique project we undertake. **How do you help prevent projects from going over budget?** Our commitment to staying on budget is a cornerstone of our service. We achieve this through meticulous planning, detailed proposals, and transparent communication from the outset. We work closely with you to define scope, select materials, and anticipate potential challenges, ensuring your project remains financially on track without compromising quality. **Do you handle full home additions and major renovations?** Yes, absolutely! Full home additions and major renovations are key areas of our expertise. We excel in complex additions and high-end renovations, transforming homes across Simcoe Muskoka and the northern GTA. From expanding your living space to complete home overhauls, we bring your vision to life with precision and quality. *FAQ content may be generated based on the Pro's Houzz profile and website.* ## Ideabooks - [My ideas](https://www.houzz.com/ideabooks/130361199/list/my-ideas) — 6 ideas [See all 1 ideabook](https://www.houzz.com/ideabooks/users/webuser-275839807) ## Community Q&A **Q: Countertop?** *(in Photo Questions)* Hello. This is a great kitchen. I especially like the thin quartz countertops - very Euro! Have you used 1.2 cm, 2 cm or something else. Did you have to provide support for the island overhang? Thank you. A: Hi Karen, we’re glad you like it. This is a 2cm white quartz. No additional support required for the overhang. Hope this helps! --- *Source: Houzz professional profile. Reflects the profile as of 2026-09-24.*