Home Addition Contractor in Dayton, Ohio
When your family needs more space, CPM ROOF delivers custom home additions in Dayton, Ohio that are built right the first time. From three-room expansions to covered patios and structural builds, we manage every step in-house, from drawings and permits through final inspection, so your project finishes on time and on budget.
From Drawings to Done in 30 Days
Most home remodeling contractors hand you off between an architect, a permit runner, and a build crew, creating delays and miscommunications at every turn. CPM ROOF handles all of it under one roof. Our in-house team prepares the drawings, submits permits, coordinates inspections, and manages the full build. That integrated process is how we deliver verified three-room structural home additions in as little as 30 days for under $90,000. Homeowners in Xenia, Miamisburg, Dayton, and across the Miami Valley have seen firsthand how this approach eliminates the frustration of a fragmented project and keeps everything moving on schedule.


Structural Quality You Can See and Trust
Every custom home addition CPM ROOF builds is framed with pressure-treated lumber and secured with Simpson structural connectors, including galvanized rafter-to-plate brackets that exceed standard framing requirements. We use high-grade OSB sheathing, SEI housewrap, and synthetic underlayment to protect the structure from Ohio weather before the finish work even begins. Whether you are adding a single room, a multi-room wing, or a timber-frame covered patio with 6x6 posts, the framing behind the walls is built to the same standard as the rest of your home. This is not cosmetic remodeling. It is structural work done with precision and backed by a consistent record of results across Dayton, Kettering, Lebanon, and the greater Miami Valley.
Dayton Homeowners Who Keep Coming Back
The most honest measure of a home remodeling contractor is repeat business. CPM ROOF has clients in the Dayton area who have returned for four separate projects within a five-year window, investing more than $200,000 in total because results consistently meet and exceed expectations. That kind of loyalty is not built on low prices alone. It is built on showing up, finishing on time, staying within budget, and communicating clearly at every stage. If you are weighing the room addition cost against the risk of hiring the wrong contractor, our project history across Xenia, Springboro, Trotwood, Franklin, and Piqua speaks for itself. President James Reedy stands behind every project personally, and that accountability is built into every contract we sign.


Custom Patios, Pergolas, and Covered Structures
A structural home addition does not have to stop at the back wall. CPM ROOF also designs and builds custom timber-frame covered patios, pergolas, and outdoor living structures that connect to your existing home without gaps in quality or scheduling. Using 6x6 pressure-treated posts and Simpson structural connectors, these builds are engineered for Ohio's climate and constructed to the same standard as our interior additions. Whether you want a shaded outdoor room off the back of your Miamisburg ranch or a full covered patio attached to a new addition in Brookville, we can design and build it as part of a single, coordinated project with no separate subcontractors and no scheduling gaps.
What Dayton Homeowners Ask About Home Additions
How long does a home addition take to complete with CPM ROOF?
For a three-room structural addition, CPM ROOF has a verified track record of completing the project in as little as 30 days from the time drawings are finalized. This is possible because the entire process, including design, permitting, inspections, and construction, is managed in-house with no handoffs to outside architects or permit runners. Timelines can vary based on project scope, municipal review schedules, and weather, but the 30-day benchmark has been achieved on real projects in the Dayton region, including a completed addition in Xenia for under $90,000.
What does a typical room addition cost with CPM ROOF in the Dayton area?
While every project is different, CPM ROOF has completed three-room structural home additions for under $90,000. That figure includes in-house design drawings, permit management, inspections, and full construction using quality materials like pressure-treated lumber and Simpson structural connectors. Specific pricing depends on the size of the addition, the complexity of the existing structure, and finish selections. CPM ROOF provides honest, detailed assessments so you understand the scope and budget before any work begins, with a commitment to staying on budget throughout the project.
Does CPM ROOF handle permits and drawings, or do I need to hire an architect separately?
CPM ROOF handles the full design-build process in-house, which means you do not need to hire a separate architect or permit expediter. The team prepares the drawings, submits them to the appropriate municipal authority, and manages the inspection process from start to finish. This integrated approach eliminates the coordination overhead that typically slows down home addition projects when multiple firms are involved, and it is a core reason CPM ROOF can deliver completed additions in compressed timelines compared to traditional general contractors in the Dayton and Miami Valley area.
What materials does CPM ROOF use for structural home additions?
CPM ROOF frames additions using pressure-treated lumber and Simpson structural connectors, including galvanized rafter-to-plate brackets that meet or exceed standard framing code requirements. OSB sheathing is used for the structural shell, and the exterior envelope is protected with SEI housewrap and synthetic underlayment before any siding or roofing is applied. For outdoor structures like covered patios and pergolas, 6x6 pressure-treated posts are standard. The goal is to build the addition to the same structural standard as the original home, not to a lower spec just because it is a new section.
Can CPM ROOF add a covered patio or pergola as part of a home addition project?
Yes. CPM ROOF designs and builds custom timber-frame covered patios and pergolas that can be incorporated into a larger addition project or completed as a standalone outdoor structure. These builds use 6x6 pressure-treated posts and Simpson structural connectors and are engineered to handle Ohio's climate. Because the design and build process is managed in-house, combining an interior room addition with an exterior covered patio is straightforward and does not require coordinating with a separate outdoor living contractor.
Does CPM ROOf serve areas outside of Dayton for home addition projects?
Yes. CPM ROOF serves a broad area across the Ohio Miami Valley, including Miamisburg, Xenia, Lebanon, Springboro, Trotwood, Kettering, Brookville, Franklin, and Piqua, in addition to Dayton. The company maintains primary operations in Miamisburg and Franklin, and has completed verified addition and remodeling projects across this region. If you are located in one of these communities and are considering a structural home addition, CPM ROOF can assess your project and provide a detailed scope and budget.

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