More Space, Same Home
A home expansion that looks like it was always part of the house: sunroom, in-law suite, or second story with a written price that holds and a build that matches.
Financing options available to fit your budget. Ask about flexible payment plans.
Your Home Addition, Step by Step
Our addition process is simple and transparent. You know the price, the plan, and the timeline before a single block is laid.
Design Consultation
We measure your lot lines, check the setbacks, and sketch how the addition meets the existing roofline and flow. Every addition project starts with how your house actually sits.
Written Estimate
One clear price in writing: foundation, framing, roof tie-in, windows, finishes, and cleanup. It holds unless you change the plan.
Build & Install
Our own crew ties the new foundation to the old, matches the framing to the existing structure, and blends the roofline so the seam disappears. Most additions run six to twelve weeks.
Final Walkthrough
Nothing gets checked off until you say so. We walk the new space with you, test every window and outlet, and hand over the warranty packet in your name.
What a Trini Home Addition Includes
Every addition is engineered, permitted, and blended into the existing home. Here is what the typical Gainesville project includes.
Sunrooms and Screened Rooms
Glass or screened sunrooms that extend your living space into the Florida yard, with real foundations and roofs, not bolt-together kits.
In-Law Suites and Cottages
Private suite additions with their own entrance, kitchenette, and bath: independent living attached to the family, on your lot.
Family Room Additions
Vaulted family rooms that open the back of the house to the yard, with beams, big windows, and space that gets used every single day.
Second Story Additions
Going up instead of out: full second floors over garages or wings, engineered to carry the load and matched to the original siding and windows.
Foundations Done Right
Block or poured foundations tied into the existing slab, with the moisture and termite details handled where new meets old, before the framing ever starts.
Roofline Blending
The tie-in is where additions get won or lost: matching shingles, step flashing, and gutters aligned so the seam is invisible from the street.
How Long a Home Addition Takes
Most additions run six to twelve weeks from permit to walkthrough. Here is the realistic schedule.
Weeks 1 to 2: Design and Permits
The design consultation, layout decisions, cabinet selection, and a written price. Cabinets are the long-lead item, so we order them the moment you approve. Most cabinet lines run four to eight weeks to deliver.
Weeks 3 to 4: Foundation
Cabinets, counters, and flooring come out. Plumbing and electrical get roughed in for the new layout, inspections get scheduled, and the room is prepped for the rebuild.
Weeks 5 to 8: Framing and Roof
Cabinets set, counters templated and fabricated, flooring laid, backsplash tiled. Our own crew handles the build with weekly photo updates, so you always know where things stand.
Weeks 9 to 12: Finishes and Walkthrough
We load-test the railing together, walk every board barefoot, and register the warranty in your name. Nothing gets checked off until you say so.
Why Gainesville Homeowners Choose Trini for Home Additions
Addition contractors trusted across North Florida since 2004, with over 400 delivered projects and additions among them.
Licensed, Insured, and Local
Trini Homes is a fully licensed and insured Florida general contractor based in Gainesville. We are not a referral service or a franchise crew passing through town. You get one accountable team from estimate to final walkthrough.
Our Own Crew, Not Sub-of-the-Week
Demo, cabinets, counters, trim, and paint are handled by our own crew, with a dedicated project lead who answers the phone. Weekly updates with photos keep you in the loop without chasing anyone down.
Written Price and a Schedule That Sticks
A written price that holds and a timeline set before demo day. 400+ completed projects across Alachua County and the surrounding counties since 2004 means we know how long each phase actually takes, and we tell you upfront.
Real Reviews From Real Neighbors
A 5.0 rating from 48 homeowners, earned one addition, roof, and remodel at a time. We would rather show you the work: ask for addresses of recent projects near yours, or drive by a current job site and see how we run one.
See the Difference for Yourself
Drag the slider on the photo to see a home before and after a real addition in Gainesville.
Home Addition in Gainesville · sunroom and expanded living space, blended roofline
See Your Lot and Setbacks Before You Spend a Dollar
Enter your address and we will pull the satellite view of your lot, the buildable area, and the public permit history on file for your home. Takes about a second. No obligation.
Alachua County addresses return the full renovation permit history. Other Florida counties within 200 miles of Gainesville are welcome, and we will confirm the details on the design consultation.
Rated 5.0 Stars by 48 Homeowners
Real reviews from real Alachua County clients.
“Trini Homes rebuilt our kitchen and we could not be happier. The crew showed up on time every day, the site was spotless at the end of each day, and the final invoice matched the estimate to the dollar.”
“After the last storm we needed a full roof replacement. As a GAF certified installer they handled everything, finished two days early, and our insurance process was smooth because of their documentation.”
“They built our home from the ground up in Tioga and treated it like their own. Communication was constant, quality was excellent, and any small issue was fixed before we even noticed it.”
Home Addition Questions, Answered
The things Gainesville homeowners ask us most before adding on.
Most additions in Gainesville run between 150 and 300 dollars per square foot, so a 400 square foot sunroom lands between 60,000 and 120,000 dollars and an in-law suite with a kitchenette runs higher. After the free lot check and design consultation you get one written price for the whole build. It holds unless you change the plan.
Most additions run six to twelve weeks on site: permits and engineering two weeks, foundation two, framing and roof four, then finishes. Weather and county review times move the schedule, and we tell you honestly where it can move before we start.
Yes, every addition needs permits, and most need engineered plans for the structure. We prepare the drawings, submit to the county, and schedule every inspection as part of the build, so you never touch the paperwork.
Usually, if the setbacks and lot coverage allow it. We check the buildable area during the free lot check before anyone spends money on drawings, and the suite gets its own entrance, kitchenette, and bath so it works for independent living.
Building out is usually cheaper per square foot in Gainesville because a second story means reinforcing the existing structure or building a new stair core. Building up makes sense when the lot is small. The free check maps both options so the numbers decide, not a rule of thumb.
Yes, added square footage raises the assessed value. The silver lining: it raises the resale value too, typically more than the build cost in this market. We flag the estimate honestly during the consultation so nothing surprises you at assessment time.
The details are the tell: matching siding, window proportions, roof pitch, and the fascia lines. We source to match the original materials wherever they still make sense, and the roofline tie-in is where we spend the most care because it is where bad additions get caught.
Almost always yes. We phase the work so your kitchen, baths, and bedrooms stay functional, seal the construction zone from the living space, and keep a clean walkway. The loudest weeks are framing and roof tie-in, and you will know exactly when they are coming.
The foundation and the roof tie-in. Those two lines carry the structural work that everything else hangs on, and they are exactly where cutting corners shows up as cracks within a few years. We break every line out so you see where the money goes.
Serving Alachua County, Duval, Marion and Surrounding Counties
Based in Gainesville, our crews work across North Central Florida.
Ready for the Space Your Home Is Missing?
Get a free, no-pressure consultation from a licensed Gainesville contractor with a 5.0 rating from 48 homeowners.