Room Additions in Florence, AL — Costs, Permits & What to Expect

Room additions are one of the most requested projects in Florence and Lauderdale County. With current mortgage rates significantly higher than the rates most homeowners locked in before 2022, adding space to an existing home is dramatically more cost-effective than selling and buying something larger. Florence's established neighborhoods — particularly those near UNA and downtown where homes were built before 1970 — often have solid bones and large lots that are well-suited for additions.

Why Florence homeowners are adding instead of moving

A homeowner who bought in Florence in 2019 or 2020 at a 3% mortgage rate and needs more space faces a stark choice: sell that home and take on a new mortgage at 6.5–7%, or add to their current home. Adding a 400-square-foot bedroom suite to a Florence home typically costs $80,000–$140,000. Buying a home that's 400 square feet larger at current rates costs hundreds of thousands more over the life of the loan. For most Florence homeowners with equity and a low rate, adding makes much more financial sense.

Common room addition types in Florence

• Bedroom additions: Adding one or two bedrooms — typically off the rear of the home — to accommodate a growing family or create a dedicated guest suite. A single bedroom addition is typically 200–300 square feet and requires a window for egress, proper insulation, HVAC connections, and electrical.
• Master suite additions: Adding a master bedroom with an en suite bathroom off the rear or side of the home. This is the most popular addition type in Florence and the highest-ROI addition for resale value. Includes bedroom square footage, full bathroom with shower, and often a walk-in closet.
• Sunroom or four-season room additions: Adding a glass-enclosed living space off the rear of the home. Florence's climate is well-suited to three-season rooms, and adding proper insulation and HVAC makes the space usable year-round. Popular in older Florence homes where the rear yard is attractive but the existing living area doesn't connect to it well.
• Garage additions: Adding a detached or attached garage to a Florence home that lacks covered parking. Florence's older neighborhoods near downtown were built before the modern standard of attached two-car garages, making garage additions common in these areas.

Permit requirements for room additions in Florence

All room additions in Florence require a building permit from the City of Florence building department. The permit process involves submitting architectural plans showing the addition footprint, floor plan, and elevation, along with a site plan showing setbacks from property lines. The City reviews for zoning compliance (additions must meet setback requirements from property lines and easements), building code compliance, and structural adequacy. Multiple inspections are required — foundation, framing, rough mechanical (HVAC, plumbing, electrical), and final — before a certificate of occupancy is issued.

We handle all permit applications and manage the inspection schedule for additions in Florence. An unpermitted addition creates title complications and cannot be counted in the home's square footage for appraisal purposes, which directly affects resale value.

Cost ranges for room additions in Florence, AL

• Single bedroom addition (200–300 sq ft): $45,000–$80,000
• Master suite addition (400–600 sq ft with bath): $90,000–$160,000
• Sunroom / four-season room (200–350 sq ft): $35,000–$70,000
• Detached garage (two-car): $40,000–$75,000

Contact Adams Remodeling for a free on-site estimate for your Florence addition, or call (256) 810-2107. We serve all of Lauderdale County with no travel fee.