NS Design and Build designs and constructs second-story additions in Denver for homeowners who need more living space without moving. Also known as pop-top additions, these projects can add bedrooms, bathrooms, a primary suite, a family room, or an entirely new floor while preserving your outdoor space and neighborhood character. Our design-build team manages structural planning, engineering, permits, construction, and final finishes to deliver an addition that meets your family’s needs. Schedule a free consultation and estimate by calling (720) 641-4365 or requesting a free quote online.

We inspect your existing home, discuss your space requirements, and determine whether a second-story addition is the right solution.

Our team works with a licensed structural engineer to evaluate the foundation, soil conditions, bearing walls, roof structure, and additional load requirements.

We prepare the project drawings, develop a detailed estimate, submit permit applications, and address applicable Denver building codes.

We finalize material selections, interior finishes, schedules, subcontractors, and ordering to help construction proceed efficiently.

Our team protects the existing home while completing demolition, structural reinforcement, framing, roofing, plumbing, electrical, and HVAC work.

We install cabinetry, flooring, fixtures, and other finishes before completing inspections, resolving the final punch list, and reviewing the finished addition with you.
A second-story addition, sometimes called a pop top, involves raising the existing roofline or constructing a complete second floor to create more usable living space. Many older Denver homes may be suitable, but each project begins with an assessment of the existing structure, foundation, and soil conditions. We also coordinate with a licensed structural engineer to evaluate the additional load before recommending a plan.
The cost depends on the size of the addition, structural complexity, required foundation work, material selections, and the number of plumbing, electrical, and HVAC upgrades involved. We develop a clear estimate during the feasibility and design phase so you can understand the major cost factors before construction.
Construction timelines vary depending on the size and complexity of the addition. Many second-story additions take several months to complete once construction begins. Permitting, structural work, material availability, inspections, and the level of interior finishing can all affect the final schedule.
Some homes require foundation reinforcement to safely support the additional weight of a new floor. Our structural engineering review identifies these requirements early so they can be included in the design, scope, and budget. Any necessary upgrades will be planned to protect the structural integrity of the home.
Yes. NS Design and Build manages permit applications, plan submissions, code-compliance requirements, and coordination with inspectors. Our team follows applicable Denver building regulations and safety standards throughout the project.
Yes. A new second floor can include a primary suite, additional bedrooms, bathrooms, closets, a family room, or a combination of spaces. During the design phase, we plan the layout, plumbing routes, storage, cabinetry, and finishes around your family’s needs.
Common challenges include reinforcing bearing walls, supporting the additional load, upgrading floor systems, integrating the new structure with the existing roofline, and addressing foundation or soil conditions. We use structural engineering and detailed pre-construction planning to identify and resolve these issues.
You will receive regular updates about the construction schedule, completed work, upcoming decisions, and overall progress. Our team provides progress photos and remains available to answer questions so you understand what is happening throughout the project.
Yes. We offer free walkthrough consultations and estimates for Denver homeowners considering a second-story addition. Call NS Design and Build at (720) 641-4365 to schedule an appointment.
Yes. We can complete the new floor with standard selections, high-end finishes, custom cabinetry, built-in storage, upgraded flooring, and personalized bathroom features. Our design-build process helps keep these selections aligned with your budget and construction schedule.