ADU Site Prep & Utilities in Fort Myers, FL

ADU Site Prep & Utilities in Fort Myers, FL

Home Additions & ADU site prep and utilities in Fort Myers involves clearing and grading your lot, running water, sewer, and electrical connections to the new unit, and getting every inspection signed off before a single wall goes up. Most Fort Myers homeowners can expect this phase to take two to four weeks depending on soil conditions, permit queue times, and how far the new structure sits from existing utility tie-in points. Groundwork Construction Co. handles the entire process in-house so you never end up coordinating between a site contractor, a plumber, and an electrician who have never worked together before.

If you’re planning an accessory dwelling unit and trying to figure out where to start, this is it. The work that happens before framing begins either sets the project up for a clean build or creates problems that show up years later as drainage failures, tripped breakers, or permit holds. We’ve been doing this in Fort Myers since 2014, and Derek Hollenbeck has built the company around the idea that the unsexy prep work matters just as much as the finished product. Visit our Home Additions & ADU in Fort Myers page to see the full scope of what we do, or call (844) 638-7249 right now and a live person will pick up – no voicemail, no waiting until Monday.

When You Need ADU Site Prep & Utilities

Not every Fort Myers homeowner knows exactly when site prep becomes a serious conversation. Here are the scenarios where this work is the first thing on the list:

• You’re building a detached ADU or casita on an existing lot. Any structure set back from your main house needs its own graded pad, drainage plan, and utility laterals. In Fort Myers, Lee County’s soil conditions – particularly the high clay content in areas like Lehigh Acres and the low-lying lots near the Caloosahatchee – mean that grading has to account for standing water and slow drainage, not just a level surface.
• Your electrical panel is already at or near capacity. Older Fort Myers homes built in the 1980s and 1990s frequently have 150-amp service that won’t support an ADU running HVAC, appliances, and a water heater. Before any framing starts, we assess whether your service needs an upgrade or a subpanel run to the new structure.
• Your lot hasn’t been touched in years and has significant vegetation or grade changes. Fort Myers lots in neighborhoods like McGregor, Iona, and Whiskey Creek often have mature tree canopies and root systems that affect grading and underground utility routing. Site clearing has to be done before any grade work begins.
• You need a separate water and sewer connection to the ADU. Fort Myers Water and Sewer requires a separate meter for ADUs in most cases, and the tap fee and connection point have to be coordinated with Lee County Utilities before any trench work starts. We handle that coordination so it doesn’t stall your timeline.
• Your property sits in a FEMA flood zone. Significant portions of Fort Myers – especially east of US-41 toward the Six Mile Cypress corridor and areas near Billy’s Creek – fall in AE or X flood zones. That means finished floor elevation requirements and fill work have to be designed into the site plan from day one, not addressed after the fact.
• You’re converting a garage or detached workshop into a livable ADU. Even a conversion needs a separate electrical panel inspection, plumbing rough-in for a bathroom or kitchenette, and a review of the existing slab for drainage slope. Lee County requires these as part of the building permit package, and missing one can push your CO back by months.

Our ADU Site Prep & Utilities Process

We don’t hand you off to a subcontractor after the estimate and disappear. Background-checked, uniformed Groundwork crews are on your property at every stage, and Derek Hollenbeck’s team manages the sequencing so each trade shows up when the site is actually ready for them.

1. Site Evaluation and Permit Package

   We start with a thorough walk of your property – checking setbacks, utility easements, existing grade, and tree canopy. Fort Myers requires a Lee County building permit for any ADU, and that permit application needs a site plan, a survey if one isn’t current, and utility connection documentation - part of why the best Home Additions & ADU in Fort Myers, FL start with proper planning. We prepare the full permit package and submit it, so you’re not learning the process by trial and error at the county planning office on Fowler Street.

2. Clearing and Demolition

   Once permits are in review, we stage clearing so we’re ready to move the day the permit is issued. Vegetation removal, any existing concrete or asphalt demolition, and debris hauling are all handled by our crew. We’re careful about tree removal requirements in Fort Myers – the city has a tree preservation ordinance that requires mitigation for certain species, and we factor that into the clearing plan before anyone fires up a saw.

3. Grading, Fill, and Drainage

   This is the step that most homeowners underestimate. Fort Myers gets an average of 56 inches of rain per year, much of it falling in concentrated summer storm events. The finished grade around your ADU has to direct water away from the foundation and not onto adjacent lots, which is both a Lee County code requirement and a neighborly obligation. In flood zone areas, we bring in engineered fill to meet the minimum finished floor elevation on the FEMA FIRM maps. Belgard hardscape products are sometimes incorporated here where we’re tying the ADU pad into an existing paver driveway or patio.

4. Underground Utility Rough-In

   Water supply lines, sewer laterals, and electrical conduit all go in the ground before the concrete slab is poured. This is the most sequencing-sensitive part of the job – trenches have to be dug, inspected, and backfilled in a specific order. For electrical, we size the conduit for the ADU’s planned load, which on a typical 600-to-800-square-foot unit with a mini-split system and full kitchen runs in the 60-to-100-amp range. We pull in licensed plumbers and electricians who work within our system, not independent contractors you’ve never vetted. A safety note here: underground electrical work, especially when tying into an existing panel, involves live service conductors and should never be approached as a DIY project. Serious injury is a real risk, and Lee County requires licensed contractor sign-off on all such work anyway.

5. Slab or Foundation Work

   Most Fort Myers ADUs go on a monolithic concrete slab. We form it, set the plumbing stubs at the correct finished floor elevation, and schedule the concrete pour with a local batch plant so the mix is appropriate for Florida’s sulfate-bearing soils. Post-tension slabs are occasionally used on lots with poor bearing soil, and we’ll tell you which is appropriate for your specific conditions – not what’s cheapest to pour.

6. Rough-In Inspections and Sign-Off

   Before framing begins, Lee County inspectors have to sign off on the underground utilities and the slab. We schedule those inspections and walk them with the inspector. If something needs adjustment, we handle it on the same visit rather than rescheduling weeks out. Once rough-ins are approved, the project transitions to the framing and finish phase covered under our broader home construction services.

ADU Site Prep & Utilities Pricing in Fort Myers

Site prep and utility work for an ADU in Fort Myers typically runs between $18,000 and $55,000 depending on the size of the unit, the condition of the existing lot, and the distance from existing utility connections. That range is wide because every lot in Fort Myers is different. A clean, flat lot in a neighborhood like Cape Coral Parkway Estates with utilities already at the property line looks very different from a low-lying acre in Lehigh Acres that needs two feet of engineered fill and a 120-foot utility run.

Here’s a general breakdown of what drives cost in this market:

• Permit fees and surveys: Lee County ADU permit fees generally run $1,500 to $3,500. If your survey is more than two years old, a new boundary survey adds $600 to $1,200.
• Clearing and grading: Light clearing on a typical suburban Fort Myers lot runs $2,000 to $6,000. Heavy vegetation, tree removal with mitigation, or significant grade correction can push this to $10,000 or more.
• Underground utilities (water, sewer, electrical conduit): $8,000 to $22,000 depending on run length and whether a meter upgrade or new tap is required.
• Slab foundation (600 to 800 sq ft): $9,000 to $18,000 in the current Fort Myers concrete market, including forming, rebar or post-tension, and pour.
• Flood zone fill and elevation work: $4,000 to $12,000 for lots requiring fill to meet FEMA finished floor elevation requirements.

We give you upfront pricing before a shovel hits the ground – the number you see is the number you pay, with no line items appearing on your final invoice that weren’t on your signed proposal. For projects over $10,000 (and site prep almost always qualifies), you’re eligible for $1,000 off and our 0% financing for 18 months, which makes a meaningful difference when you’re managing a project of this scope. Call (844) 638-7249 for a free estimate – every site gets a real walk before we put a number on paper.

Every dollar of this work is covered by our 730-Day Done Right Promise. If the grading fails and water pools against your foundation, if a utility connection wasn’t done right, if anything we installed during site prep doesn’t perform – we come back and make it right. That’s one of the longest workmanship guarantees in residential construction, and it’s in writing on every contract we sign.

FAQs – ADU Site Prep & Utilities in Fort Myers

How long does ADU site prep take in Fort Myers?

Most ADU site prep projects in Fort Myers take three to six weeks from permit issuance to slab sign-off, though permit review at Lee County can add two to four weeks before physical work begins. The permit queue is the variable we can’t control, but we submit complete packages to minimize revision requests. Active site work – clearing, grading, utility rough-in, and slab – generally runs three to four weeks on a standard 600-to-800-square-foot ADU footprint. Lots that need flood zone fill work or have complicated utility runs can add a week or two. Call (844) 638-7249 and we’ll give you a realistic timeline for your specific lot.

Does Fort Myers require a separate utility meter for an ADU?

Yes, in most cases Lee County Utilities requires a separate water meter for a new ADU, and the tap fee and meter set have to be coordinated with the utility authority before trenching. Electrical service can sometimes be served from the main house panel via a subpanel, depending on available capacity, but a licensed electrician has to size the load and pull the permit regardless. Sewer connection typically ties into the existing lateral at a point before it reaches the street, but the tie-in location has to be inspected and approved. We handle all utility coordination with Lee County and the relevant utility authorities - you shouldn’t have to make those calls yourself. Wondering Can I Build an ADU on my Property? (Fort Myers, FL) - we’ll assess that on your site walk. For a free site assessment, reach out at (844) 638-7249.

What’s the difference between site prep for a garage conversion versus a new detached ADU?

A garage conversion in Fort Myers is generally less intensive on the site prep side because the slab already exists and utility rough-ins are closer to the main house. The main work involves bringing the existing slab up to finished floor elevation requirements if it falls in a flood zone, adding plumbing rough-ins for a bathroom or kitchenette, running a dedicated electrical circuit or subpanel, and passing a series of inspections that weren’t required when the garage was just a garage. A new detached ADU in Fort Myers, FL requires all of that plus full site clearing, grading, a new slab, and longer utility runs. Budget accordingly – conversions typically run $10,000 to $25,000 on the prep and utilities side, while new detached structures start higher. We’ll scope the right scope at no cost when you call (844) 638-7249.

Can ADU site prep be done in Fort Myers’s rainy season?

Yes, and we build Fort Myers’s weather patterns into every project schedule. Summer rain events between June and September can delay concrete pours by a day or two and slow excavation on lots with poor drainage, but experienced crews plan around them. The bigger risk is doing grading work during heavy rain and compacting wet soil that later settles unevenly under the slab. Our crews don’t cut corners on compaction testing because it’s faster – we schedule pours when conditions are right, and the 730-Day Done Right Promise backs that commitment. Fort Myers homeowners who start permits in late spring often have site work running through July and August, which is fine with proper sequencing.

Key Takeaways

• ADU site prep and utilities in Fort Myers typically costs $18,000 to $55,000, with lot conditions and utility run length being the biggest variables.
• Lee County requires a full permit package including a site plan and utility connection documentation before any physical work can begin.
• Fort Myers’s flood zone maps and 56-inch annual rainfall make grading and drainage planning critical – not optional steps.
• Groundwork Construction Co. manages clearing, grading, underground utilities, slab work, and all inspections under one contract.
• All site prep work is covered by the 730-Day Done Right Promise, with upfront pricing and no surprise line items at the end.
• Projects over $10,000 qualify for $1,000 off and 0% financing for 18 months.
• Call (844) 638-7249 any time – a live person answers 24/7 for estimates, questions, or to schedule a site walk.

Ready to Start Your ADU Project in Fort Myers?

Site prep is where your ADU either gets built right or gets built with problems you’ll be solving for years. Groundwork Construction Co. has been doing this work in Fort Myers since 2014, and Derek Hollenbeck’s crew shows up uniformed, background-checked, and ready to give you a straight answer on what your lot actually needs. We’re not guessing at your project from an office across town – we walk the site, read the soil, check the flood maps, and put real numbers on paper before you commit to anything.

Call (844) 638-7249 today for a free project estimate and design consult. A live person will pick up, and we’ll schedule your site walk within the week. Every project starts with an honest conversation and ends with a job covered by the 730-Day Done Right Promise.

Written by Derek Hollenbeck, Owner at Groundwork Construction Co. of Fort Myers, serving Fort Myers.