Central New Jersey · Est. 2020

Beyond the Blueprint.

A father-and-son team crafting premium renovations for homeowners who care about the details most contractors skip.

20+Years in Business
$2MGeneral Liability
NJ HIC registered
Family Owned & Operated
Meatheadz Cheesesteak commercial kitchen build by The5thwall — completed fit-out on opening day

Signature Project

A commercial kitchen, opened on a fixed lease date.

Meatheadz Cheesesteak signed their lease with an opening day already on the calendar. We delivered a full commercial kitchen fit-out — framing, rough-ins, slate tile, stainless surfaces, and health-code sign-off — on a cement-hard timeline, with zero change orders. Menu boards lit up on the scheduled date.

Scope
Commercial
Timeline
14 Weeks
Delivery
On Schedule
Read the story

Why The5thwall

Two generations. One standard.

Stefanos learned from Tony. Tony learned from his father before him. You will not work with a salesperson who disappears after signing — you will work with the two owners, on site, for the duration of your project.

20 years · 400+ projects · 0 compromises.

— Tony & Stefanos Karpontinis

Father & son, on site.

You work directly with Tony and Stefanos — the two owners — for the duration of your project. No salesperson. No absentee GC.

Licensed and insured.

NJ HIC registered. $2M general liability. We pull every permit and handle every inspection in-house.

No shortcuts, ever.

Proper prep. Premium materials. The quiet details most crews skip — mitred returns, aligned grout, flush transitions. That is the work.

On time, on budget.

Transparent quotes, no surprise change orders, detailed weekly updates. You always know where the project stands.

Behind the Work

Real tools. Real trucks. Real craftsmen.

No call centers. No dispatched subs. Just two owners and a crew we trained ourselves, working across Mercer County.

Tony and Stefanos Karpontinis working on site in Central NJ
On site, every project. Owners working alongside the crew — not supervising from a truck.
The5thwall company vehicle — fully outfitted for Central NJ job sites
Licensed NJ contractor · $2M insured · fully outfitted for the road.

Where we work

Central New Jersey, and the towns that know us.

We focus on Mercer County and the surrounding Princeton, Lawrence, and Trenton-area communities where most of our work lives.

Beyond the Blueprint

Notes from the journal.

Whole-House Renovation Timeline NJ (2026): Realistic Phase-by-Phase Schedule

Guides

Whole-House Renovation Timeline NJ (2026): Realistic Phase-by-Phase Schedule

How long a whole-house renovation actually takes in New Jersey: 6 to 14 months from contract signing to final inspection, depending on scope, permits, and structural work. Phase-by-phase breakdown with NJ-specific permit timelines, NAHB and NKBA industry benchmarks, BLS labor data, and the four scheduling traps that quietly add 30 to 90 days to most projects. Written by a licensed Lawrence NJ father-son contractor.

·16 min read
Second Story Addition Cost NJ (2026): Real Mercer County Pricing & 18-Month Timeline

Guides

Second Story Addition Cost NJ (2026): Real Mercer County Pricing & 18-Month Timeline

Real 2026 Mercer County second story addition costs: $300 to $550+ per square foot for typical 800–1,400 sq ft full-second-floor builds. Total project costs $240,000 to $770,000+ depending on size, finish level, and structural complexity. Honest math on full-second-floor vs partial pop-top, structural reinforcement of existing foundation and first floor, NJ-specific permit timeline (8–16 weeks), HVAC and electrical capacity upgrades, and the eight cost variables that separate a legitimate quote from a 30%-over-budget surprise. Written by a licensed Lawrence NJ father-son contractor.

·20 min read
Basement Egress Window Cost NJ (2026): Real Mercer County Pricing & Code Requirements

Guides

Basement Egress Window Cost NJ (2026): Real Mercer County Pricing & Code Requirements

Real 2026 NJ basement egress window costs: $4,500 to $9,500+ for a complete cut-and-install in Mercer County depending on wall type, depth below grade, and well system. Full breakdown of IRC R310 code requirements (5.7 sq ft opening, 24-inch height, 20-inch width, 44-inch sill height max), wall-cutting cost variables (poured concrete vs CMU block vs old foundation stone), drainage requirements, NJ permit costs by town, and the four mistakes that turn a $5K project into a $12K nightmare. Written by a licensed Lawrence NJ father-son contractor.

·18 min read

Begin

Begin your consultation.

A conversation about your project, your timeline, and what is possible. No pressure. No sales pitch. Just two owners, and the plan for getting it right.

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