A Penhallow company - serving Miami, FL
A new rear addition with a vaulted beamed ceiling and tall windows
General Contractor · Key Biscayne, FL

General Contractor in Key Biscayne - Licensed & Insured, Written Fixed-Price Quotes

Free on-site estimate and a written, line-item quote before any work begins. One contract, one crew, one accountable point of contact. Licensed, insured, permits handled.

Call to schedule your free estimate

16+
Cities Served
Free
Written Quotes
Licensed & Insured Written Quotes Free Estimates All Brands Satisfaction Guarantee
Free Estimate on SiteCalls Answered by a Live Person, 24/7Background-Checked TechniciansA Local Team in Miami
A garage converted into a guest room and home office
A finished backyard cottage with a small covered porch
New painted shaker cabinets with an organized deep drawer
A remodeled hall bathroom with patterned floor tile and painted walls
A remodeled staircase with wood treads and a slim metal railing
A small remodeled galley kitchen with cabinets to the ceiling
A low-threshold walk-in shower with a bench and grab bar
A finished basement family room with a media wall and wet bar
Every visit starts with

Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled

Your dream remodel for as low as$199/month*On approved credit; ask for current terms
Get your free estimate

Fast, Reliable General Contractor Across Key Biscayne

Hiring a general contractor in Key Biscayne comes with a set of challenges you won’t find across the causeway. This is a barrier island with hurricane codes, FEMA elevation requirements, salt air, and a housing stock that ranges from 1960s concrete bungalows to glass-walled high-rises on Crandon Boulevard. Our General Contractor team manages the whole job: permits, structural work, finish carpentry, and the long-lead material orders that decide whether your remodel finishes in five months or nine. If you’re planning a kitchen, bath, or whole-home remodel on the island, call (850) 988-7559 and we’ll give you a written price before any work starts.

Call (850) 988-7559

Why Penhallow Remodeling Miami Is Key Biscayne’s Preferred General Contractor Company

A wide opening with a new beam where the kitchen wall was removed

Trevor Nash built Penhallow Remodeling around a simple promise: the price and the guarantee go in writing before a single cabinet is pulled. On Key Biscayne, that matters more than most places, because the variables are real: wind-load ratings, elevation certificates, condo board approvals, and millwork lead times that stretch into months. We don’t hand you a verbal ballpark and hope it holds. We hand you a fixed number, a defined arrival window, and a 365-Day Done Right Promise that says if something fails inside a year, we come back and fix it at no charge.

Our crews know the island. They know the difference between a 1950s concrete condo off Crandon Boulevard and a new piling-supported estate near the Cape. They know which window packages pass Miami-Dade wind-load review and which ones get kicked back. And when you call us, a live person answers, not a voicemail maze. Scheduling for Key Biscayne is coordinated from our Miami (South FL) office, with uniformed, background-checked technicians dispatched locally.

Explore

Styles & brands we work with

Kitchen remodeling
Kitchen remodeling
Bathroom remodeling
Bathroom remodeling
Home additions & ADU
Home additions & ADU
Roofing
Roofing
Windows & doors
Windows & doors
Driveway & pavers
Driveway & pavers
Fence
Fence

Licensed General Contractor in Key Biscayne

A Licensed General Contractor in Key Biscayne is the person who pulls the permits, schedules the inspections, and answers to the village when something doesn’t meet code. On this island, that job is heavier than most homeowners expect. The village requires elevation documentation on many rebuilds, impact-rated glass on new openings, and structural sign-offs before drywall goes up. We handle all of it, including the FEMA elevation certificate paperwork that often stalls projects when it’s left to the homeowner. A bathroom remodel with a walk-in shower typically runs $9,000 – $28,000 on the island. A kitchen remodel runs $14,000 – $45,000 depending on cabinet line, countertop material, and how much structural work the existing space demands.

Permit and Elevation Coordination

Finished floor heights on Key Biscayne often need to sit 7 – 9 feet above sea level, which means pilings, stem walls, or elevated slabs long before finish work begins. We coordinate the engineer, the surveyor, and the village permit office so your project doesn’t stall waiting on a signature.

Fixed-Price Contracts for Island Work

Every job gets a written line-item quote before we order a single sheet of drywall. Allowances are priced up front, not discovered mid-job. If the structural engineer flags a shear wall or a failed lintel during demo, you’ll see the adjustment in writing before we proceed, not as a surprise at the end.

Residential General Contractor in Key Biscayne

A single-story rear room addition with tall windows and a new patio

A Residential General Contractor in Key Biscayne does more than swing a hammer. We’re ordering custom cabinetry with 16-week lead times, coordinating with your architect or designer, and sequencing trades so the tile setter isn’t waiting on the electrician. On high-end island remodels, the schedule is driven by long-lead materials, not labor. Cambria quartz countertops, custom millwork, and impact-rated windows all take months to arrive. If they’re ordered after demo, the project stalls. We order them before we open a wall.

Designer and Architect Coordination

Most of our Key Biscayne projects involve a designer or architect, and we work inside that relationship rather than around it. We review drawings for buildability, flag lead-time issues early, and keep a single point of contact so you’re not chasing three people for answers.

Custom Millwork and Specialty Finishes

Key Biscayne homes lean into custom: floating vanities, glass railings, built-in cabinetry, stone feature walls. These are the pieces that make the project feel like yours. They’re also the pieces with the longest lead times. We carry fixed allowances for them in the written price so there’s no ambiguity when the samples come back.

Trusted Brands We Service in Key Biscayne

We install and service products from GAF, CertainTeed, and Owens Corning, along with kitchen and bath lines like KraftMaid, Wellborn, Cambria, Silestone, Kohler, and Moen. For Key Biscayne’s salt-air environment, we favor corrosion-resistant hardware and high-wind-rated systems. Because we stock common parts and coordinate delivery from local suppliers, turnaround on change items stays tight even when a specific finish has to be special-ordered.

Common General Contractor Problems We See in Key Biscayne Homes

  • Single-pane jalousie windows that fail wind-load review. Many older condos along Crandon Boulevard still have original aluminum frames and louvered glass. When you open a wall during a bathroom or kitchen remodel, the inspector often requires those openings to be upgraded to impact-rated units. That’s an $8,000 – $25,000 line item if it’s not planned for.
  • Custom millwork ordered after demo. On Key Biscayne, lead times of 16 – 24 weeks are common for custom cabinetry and architectural glass. If the order doesn’t go in before demolition, the project sits half-finished while the budget keeps carrying carrying costs.
  • Elevation certificates that weren’t pulled early. Base flood elevation on the island can require finished floors 7 – 9 feet above sea level. If the surveyor and engineer aren’t engaged before design locks, you can lose weeks waiting on FEMA sign-offs.
  • Untested concrete and failed lintels in 1950s – 70s buildings. Original window lintels and tie-downs in older concrete condos often fail wind-load analysis. We test early and price repairs into the written quote rather than springing them on you after demo.
Before & after

See the difference

Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
Before - Complete UpgradeBeforeAfter - Complete UpgradeAfter
Complete Upgrade

Pricing for General Contractor in Key Biscayne, FL

Here’s what we quote for common Key Biscayne scopes. These are market-calibrated ranges, not bait numbers.

Project Typical Range (Key Biscayne)
Impact Window Installation $8,000 – $25,000
Shower Replacement $3,000 – $8,500
Kitchen Remodel $14,000 – $45,000
Bathroom Remodel $9,000 – $28,000
Home Addition $45,000 – $130,000
Countertop Installation $2,000 – $6,500

What moves the number: structural scope, elevation requirements, window package, and material grade. A small bathroom with a tub-to-shower conversion starts near $3,500 – $10,000. A full kitchen with custom cabinetry and Cambria tops can push past $40,000. Call (850) 988-7559 for a written quote. Estimates are free, and the number we give you is the number on the invoice.

We Also Serve Cities Near Key Biscayne

Our crews serve Key Biscayne and the surrounding South Florida communities, including Miami, Hialeah, and North Miami Beach. If you’re across the bridge or up the coast, the same written-price promise applies. Call us and we’ll schedule a walkthrough.

Serving Key Biscayne, FL - Our Local Coverage Area

We’re based in the Key Biscayne area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.

FAQs About General Contractor in Key Biscayne

Ready to Talk About Your Key Biscayne Project?

A second-story addition that matches the existing roofline

Call (850) 988-7559 to schedule a free walkthrough and written quote. Trevor Nash and the Penhallow Remodeling Miami team serve Key Biscayne homeowners with fixed pricing, defined arrival windows, and a 365-day guarantee on every job. A live person answers when you call. No pressure, no vague numbers, just a written price and a promise we’ll stand behind.

Written by Trevor Nash, Owner at Penhallow Remodeling Miami, serving Key Biscayne homeowners with written pricing and the Kingswell guarantee since 2004.

Why Key Biscayne Chooses Penhallow Remodeling Miami

We set the standard for general contractor in Key Biscayne.

No Change-Order Surprises

The written quote you sign is the price you pay. Anything we find mid-job gets priced and approved by you in writing before we touch it.

Licensed & Insured

Fully certified technicians who meet all local and state licensing requirements.

Upfront Pricing

No hidden fees, no surprises. You approve the price before any work begins.

Guaranteed Work

Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.

How It Works in Key Biscayne

Getting your general contractor handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your general contractor needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Key Biscayne - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local general contractor pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Key Biscayne Customers Say

Trusted by homeowners across Key Biscayne and surrounding areas.

★★★★★

"Full home refresh before we sold. They were straight about what was worth doing and what wasn't to get our money back. On time, on budget, and it sold in a week."

Monica Vaughn · Verified customer
★★★★★

"Full kitchen down to the studs. The written estimate held and they finished on the day they promised. Crew was tidy and polite the whole month. Rare to find."

Vernon Askew · Verified customer
★★★★★

"Did our whole kitchen. The written estimate held, which after reading remodel nightmares online I did not take for granted. Showed up every morning on time and the crew was clean and polite."

Warren Updike · Verified customer

Ideas for every room in the house

Built-ins, window seats, family rooms and staircases: the changes that make a whole house work better.

Read our remodeling guides
A built-in window seat in a bay windowA dining nook with a built-in banquetteA home office with a built-in desk and shelvesA remodeled kitchen with a waterfall island and wood cabinetsA wood double vanity with two mirrors after a bathroom remodelAn open living space after a whole-home remodel

More remodeling services in Key Biscayne

Every project below starts the same way: a free on-site visit and a written price.

Getting started with Penhallow in Miami

Every project starts with a conversation and a written price. Here is how to take the first step.

A project lead measuring a kitchen with the homeowner during a free estimate

Free on-site estimate

A project lead walks the job with you, measures it and hands you a written, line-item price. No obligation.

Book an estimate
A remodeling crew arriving at a home with lumber and tools

Your Miami team

A local crew that works across Miami and the towns around it, to the same written standard as every Penhallow location.

Areas we serve
A worker laying floor protection and a dust barrier before work starts

Read our written promise

What we promise on every job, written down, with the terms spelled out before any work starts.

Our promise

Ready for General Contractor in Key Biscayne?

Call now for a free estimate - or request one below. Licensed, insured, and here with fast after-hours help in Key Biscayne.

(850) 988-7559

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