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Home addition under construction by Keystone Custom Builders in Northeast Florida — serving Arlington, Florida

Duval County · Northeast Florida

Home Additions in Arlington

Room additions, second stories and in-law suites that tie into the original structure like they were always there. Licensed and insured, Florida Certified Building Contractor CBC1265492.

Matched roof, wall and floor planes
Tie-inMatched roof, wall and floor planes
We work around occupied houses
Live-inWe work around occupied houses
Change orders before, not after
WrittenChange orders before, not after

Home Additions for Arlington property owners

Home Additions in Arlington starts with the property, not with a catalog. From the Mathews Bridge across to Fort Caroline Road, Arlington is territory we know. Most of what we handle here involves 1950s-60s block ranch homes, riverfront and creekfront lots and small commercial.

Site conditions here are specific and they're not optional to plan around. Sand ridges cut by tidal creeks, so two lots on the same street can sit six feet apart in elevation, while frontage on the St. Johns and on tidal creeks feeding it — brackish, with marsh edges that constrain shoreline construction.

Why home additions works differently in Arlington

Adding onto a Arlington house means working with construction that predates most current assumptions. Large stock of well-built 1950s and 60s concrete block houses that are structurally sound and functionally dated — balloon framing, pier foundations and undersized electrical services are all common, and each one changes what an addition costs. Sand ridges cut by tidal creeks, so two lots on the same street can sit six feet apart in elevation. That adds buried surprises. City permitting with wetland and marsh setback review common on creekside parcels, so the exterior of the addition may be subject to review before the permit is worth applying for.

The second local factor: frontage on the St. Johns and on tidal creeks feeding it — brackish, with marsh edges that constrain shoreline construction. That matters because the right approach to home addition work follows local conditions as much as it follows the plan set.

Approvals run through City of Jacksonville Building Inspection Division. Sorting that out early is unglamorous and it is where schedules are won.

Put together, that's why we won't quote home addition work in Arlington from a phone call. The variables that decide the number are all on the property.

What home additions in Arlington covers

  • Structural assessment of the existing house
  • Roof and elevation resolution
  • Foundation and floor system
  • Systems capacity and upgrade
  • Envelope and exterior matching
  • Interior finish and transition
Full home additions scope and process →

Signs it's time to call

These are the things owners tell us on the first call. If more than one sounds familiar, it's worth a look.

  • A family member is moving in and the house has one bathroom too few.
  • The previous owner already added on, badly, and it leaks or sags at the joint.

How we deliver home additions in Arlington

  1. 01

    Walkthrough and measure

  2. 02

    Design and structural plan

  3. 03

    Permitting and review

  4. 04

    Demolition and structural work

  5. 05

    Systems, envelope and finish

  6. 06

    Transition detailing and punch

What actually drives the cost

We won't quote a number sight unseen. These are the factors that move it, so you can see where your project is likely to land before we ever walk the property.

Systems capacity
A 100-amp panel and a right-sized HVAC unit for the original house frequently cannot serve the expanded one. That upgrade is part of the real cost.
Matching existing materials
Brick, siding profile and roof tile that are out of production drive either a sourcing hunt or a design decision to break the plane deliberately.

Serving Arlington.

We add on to older Arlington homes — rear additions, primary suites and kitchen expansions on houses that deserve the care. 1950s-60s block ranch homes, riverfront and creekfront lots and small commercial surround the work. Matching a hundred-year-old exterior convincingly is a sourcing problem as much as a carpentry one, and we plan for it.

Our Duval County work covers Arlington plus Jacksonville, San Marco, Riverside and Avondale — near enough to each other that a site visit is never a production.

  • 1950s-60s block ranch homes
  • riverfront and creekfront lots
  • small commercial

Home Additions questions in Arlington

Will my Arlington addition need historic review?

If your property is inside a designated district, yes — city permitting with wetland and marsh setback review common on creekside parcels. That review governs materials, window profile and massing, and it happens before permitting. We check the designation on the first visit so it's never a surprise.

How much does home addition work cost in Arlington?

Not without seeing the property, and any contractor who does is guessing. In Arlington the biggest single variable is usually the site itself — sand ridges cut by tidal creeks, so two lots on the same street can sit six feet apart in elevation — which changes the scope before anything else does. We'll walk it and give you a real number.

Who pulls the permit for home addition work in Arlington?

Almost always. Jurisdiction sits with City of Jacksonville Building Inspection Division. City permitting with wetland and marsh setback review common on creekside parcels. That's our responsibility, not yours: applications, comment responses and inspections are all part of the contract.

What's your availability for work in Arlington?

Site visits in Arlington are typically within a week or so. Start dates hinge on City of Jacksonville Building Inspection Division's review timeline, which we'll tell you honestly up front instead of promising a date we'd have to move.

Do you serve Arlington and the surrounding area?

Yes. Arlington is inside our regular service area from Keystone Heights, and we work throughout Duval County — including Jacksonville, San Marco and Riverside. Call (352) 478-6112 and we'll come look at the property.

Can we live in the house during the addition?

Usually yes. We build the new structure as far as possible before opening the existing wall, and we seal and dust-barrier the connection. Kitchen and single-bathroom projects are the exceptions worth planning around.

How long does an addition take?

Most run three to six months of construction, with design and permitting in front of that. Second stories and additions requiring variances run longer.

More home additions questions →

Ready to talk about home additions in Arlington?

Free consultations, straight answers, and one contractor accountable from the first walkthrough to the last punch item.

Home Additions in Arlington