Lanai vs Sunroom: Which Should You Build?

If you are deciding between a lanai and a sunroom for your South Florida home, the main choice comes down to climate protection, air conditioning, and how you plan to use the space. A lanai provides a covered, insect-screened outdoor living area that maximizes airflow while shielding you from harsh sun and rain. A sunroom (or patio room conversion) creates a fully enclosed, air-conditioned indoor living space with glass windows, insulated walls, and integrated HVAC. Preventive Maintenance handles design, permitting, and construction across South Florida.

Who It Is For

Choosing between a lanai, a patio room conversion, and a full home addition depends on your lifestyle needs, budget, and how you want to interact with South Florida’s environment:

• Lanai Construction: Ideal for homeowners who want to enjoy the outdoor breeze, shade, and rain protection while staying completely safe from mosquitoes and insects. It is the most cost-effective way to extend your outdoor living area over an existing concrete slab or paver patio.

• Patio to Room Conversion: Perfect for homeowners who already have an under-roof covered patio and want to convert it into a year-round, climate-controlled space such as a home office, den, playroom, or expanded living area.

• Home Addition: Designed for property owners who need entirely new floor space from the ground up, adding significant square footage with full foundation, structural tie-in, roof, electrical, plumbing, and central air conditioning.

What We Build

As a single-source general contractor, Preventive Maintenance manages every structural, mechanical, and finishing detail for all three outdoor living and expansion solutions.

1. Patio Lanais

• Materials: High-grade structural aluminum extrusions or conventional wood framing with concrete columns.

• Roofing: Insulated aluminum roof panels for lightweight shade and heat mitigation, or concrete tile/shingle roofing matched to your home.

• Enclosure: High-durability stainless steel or fiberglass screening engineered to resist strong storm winds.

• Climate Control: Non-conditioned outdoor space, ventilated naturally with ceiling fans.

2. Patio to Room Conversions

• Materials: Impact glass window systems, insulated wall panels, and reinforced wall framing.

• Roofing: Conversion roofing utilizes existing covered patio slabs and roofs, flat TPO membranes, or sloped concrete tile tie-ins.

• Enclosure: Fully weather-tight glass and insulated wall systems engineered for High Velocity Hurricane Zone (HVHZ) wind loads.

• Climate Control: Fully integrated ductwork connected to your existing HVAC or a dedicated mini-split air-conditioning system.

3. Home Additions

• Materials: Concrete block masonry (CMU) or heavy-duty wood/steel framing built over new reinforced poured concrete slab foundations.

• Roofing: Flat TPO membrane systems or sloped concrete tile roofing engineered to seamlessly integrate with your existing roofline.

• Tie-In Systems: Engineered ledger attachment, or structural joists and trusses anchored directly onto the existing concrete tie-beam.

• Climate Control: Complete central HVAC installation, full electrical wiring, plumbing, and interior insulation.

Comparing Your Options

Our Step-by-Step Process

1. Initial Site Inspection: We conduct an on-site evaluation of your existing concrete slab, roofline, tie-beam, and electrical capacity.

2. Architectural Plans & Engineering: Our team prepares complete structural engineering plans and architectural drawings tailored to local building codes.

3. HOA & Board Review: We prepare and submit all necessary documentation and architectural review packages to your Homeowners Association.

4. Permitting & HVHZ Compliance: We pull all required municipal building, electrical, plumbing, and HVAC permits for South Florida High Velocity Hurricane Zones.

5. Site Preparation & Foundation Work: We pour or reinforce concrete foundations, anchor slabs, and install required structural footings.

6. Framing & Structural Tie-In: We secure structural ledger boards or attach joists and trusses directly onto the concrete tie-beam.

7. Roofing & Enclosure Installation: We construct the roof system using insulated aluminum, flat TPO, or concrete tile, then install impact windows or screening.

8. Electrical, Plumbing & HVAC Integration: Licensed technicians install interior wiring, fixtures, plumbing lines, and air-conditioning units.

9. Final Inspection & Sign-Off: We complete all final municipal inspections and hand over your fully permitted, completed space.

Cost Breakdown

Understanding construction pricing helps you select the right project for your property budget:

• Aluminum Lanai: Costs about $52 per square foot when constructed on an existing concrete slab.

• Conventional Wood-and-Concrete Lanai: Costs about $65 per square foot when constructed on an existing concrete slab.

• Patio to Room Conversion: Pricing depends on whether the current roof and slab can remain, as well as selection of impact glass, wall insulation, electrical layout, and dedicated HVAC equipment.

• Air-Conditioned Home Addition: Averages about $250 per square foot, offering substantial savings compared to new home construction which averages about $350 per square foot.

• Dimensions: Typical project sizes range from 12' x 20' to 20' x 20', though custom dimensions are available for any property footprint.

Timeline, Permits, HOA, and HVHZ Compliance

The complete timeline for designing, permitting, and building a lanai, conversion, or home addition typically ranges between 3 and 6 months.

South Florida experiences extreme heat, high humidity, torrential rainfall, heavy insect activity, and tropical wind events within High Velocity Hurricane Zones (HVHZ). Because of these weather factors, all structural tie-ins require engineered connections such as ledger systems or truss attachments on the concrete tie-beam.

Preventive Maintenance holds 5 state contractor licenses and EPS licenses. As a single-source general contractor, we manage all structural engineering, architectural plans, city permitting, and standard HOA notifications from start to finish.

Areas Served

Preventive Maintenance serves residential properties across Palm Beach County and Broward County, Florida.

Palm Beach County

• Jupiter

• West Palm Beach

• Boynton Beach

• Delray Beach

• Boca Raton

Broward County

• Pompano Beach

• Fort Lauderdale

• Pembroke Pines