Home Additions in Hillsborough by The5thwall

Residential · Hillsborough, NJ

Home Additions in Hillsborough

Licensed NJ contractor serving Hillsborough and Somerset County. Father-and-son team. No subcontracted labor.

4.9

Average customer rating

Across all projects in Mercer County and surrounding areas.

NJ

Licensed & insured

NJ HIC registered — fully bonded, $2M general liability.

5+

Years serving Central NJ

Including Hillsborough and Somerset County.

Overview

Home Additions in Hillsborough — for homeowners in Somerset County, built by a team that lives here.

Hillsborough Township offers a blend of suburban convenience and preserved open space, with Sourland Mountain forming a scenic backdrop to the west. The township grew rapidly in the 1980s and 1990s, resulting in large developments of colonials and center-hall layouts along Amwell Road and Route 206. Older sections near Neshanic Station and Flagtown feature Cape Cods and ranch homes from the 1950s and 1960s with character but dated finishes.

Many Hillsborough homes are now entering the 30-to-40-year window where original kitchens, bathrooms, roofing, and siding need replacement — not just touch-ups. The township's well water and septic systems in some neighborhoods add complexity to bathroom and kitchen renovations that require plumbing modifications. Homeowners here value quality work that protects their investment in a competitive resale market.

Scope of work

Every additions project covers the full scope — start to finish.

One contractor pulls every trade under one roof — design, demolition, rough-in, finish, cleanup. You deal with the owners. No coordinating subs, no finger-pointing, no surprise line items.

Included

  • Room addition planning, framing, and finish work
  • Garage additions and garage conversions
  • Sunroom and four-season room construction
  • Foundation, footings, structural framing, and roof tie-ins
  • Siding, window, door, insulation, HVAC, electrical, and finish coordination
  • NJ permit applications, inspections, and code-compliant construction

Investment

What a additions project costs.

Three investment tiers, based on scope and finish level. Every estimate is custom — these are the ranges most clients land within.

Essential

Quality craftsmanship for everyday upgrades

$15K - $40K

What's included

  • Single-room renovations
  • Standard material selections
  • Licensed & insured crew
  • Project management included
  • 1-year workmanship warranty
  • Permit handling
Get a Free Estimate

Premium

Elevated finishes for the modern home

$40K - $100K

What's included

  • Multi-room renovations
  • Premium material selections
  • 3D design visualization
  • Dedicated project manager
  • 2-year workmanship warranty
  • Permit handling
  • Weekly progress updates
  • Flexible payment schedule
Get a Free Estimate

Elite

Full-scale transformations without compromise

$100K+

What's included

  • Whole-home renovations
  • Designer-grade materials
  • Full architectural planning
  • Senior project manager
  • 5-year workmanship warranty
  • Permit handling
  • Daily progress updates
  • Priority scheduling
  • Post-project walkthrough
Schedule a Consultation

The process

Five steps, start to handover.

01

Consultation

A site visit, measurements, and an honest conversation about scope. No pressure, no obligation.

02

Design & estimate

We return with a detailed plan, material selections, and an itemized estimate. You see exactly what the project is — and exactly what it costs.

03

Contract & permits

One contract, line-itemed. We pull every permit required by NJ code. Your project starts with compliance handled.

04

Build

Our crew works on site, one point of contact throughout. Daily cleanup, weekly progress reports, no crew rotation.

05

Handover

A walkthrough of every detail together. Nothing closes until you're satisfied. Workmanship warranty begins the day you sign off.

Next step

Begin your additions consultation in Hillsborough.

We're based in Lawrence — minutes from Hillsborough. Site visits typically scheduled within a week.

Call NowFree Quote