A year-round sunroom designed to feel like part of your home.
See examples of sunrooms planned for better comfort, brighter views, and a more finished living-space feel.
We talk through how often you want to use the room and what level of comfort you expect.

We review the structure, roofline, foundation needs, openings, and connection to the home.

We help select wall systems, insulated glass, doors, roof details, and comfort-related upgrades.

Once details are finalized, we handle construction with attention to fit, finish, and long-term use.

The Four Season Sunroom Builder process brings the structure, insulated wall system, glass, roofing, utilities, and comfort features together so the completed room functions as true year-round space.


A four season sunroom requires more planning than a basic seasonal room because comfort, insulation, glass, and connection to the home all matter. These questions help explain what to consider before starting.
Expect site preparation, deliveries, demolition when required, structural work, inspections, installation, finish work, cleanup, and a final walkthrough. Access to parts of the yard may be limited, and weather or inspections can affect the sequence. ModExt will communicate major schedule changes and items needing homeowner decisions.
Major cost factors include room size, three-season versus four-season construction, foundation, roof type, glass and wall system, number of doors, demolition, electrical, HVAC, interior finishes, and access. Custom sizes, structural changes to the home, and permitting requirements can also affect price.
Material choices affect heat, maintenance, moisture resistance, appearance, warranty, and long-term durability. For enclosed rooms, glass, insulation, framing, roofing, and HVAC planning affect comfort. For decks and outdoor structures, board material, fasteners, ventilation, drainage, and finish quality all matter.
Plan furniture, door locations, views, window operation, privacy, glare, ventilation, outlets, HVAC airflow, and how the room connects to the house and yard. Roof shape and ceiling height affect how open the room feels, while orientation affects heat gain and shade.
Prefer to talk now?
Call us at (757) 600-5100
Prefer to talk now?
Call us at (757) 600-5100
Tell us a little about your project, and our team will help you understand the best next step.