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ZAVALA & SONS
Home Improvement

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Something Great

Hammers are swinging on our new digital home. Same family, same crew, same promise. Premium remodeling done right the first time, and we'll be back online soon.

Wilmington, DE·(302) 781-2834·Licensed & Insured
9:415G
Licensed
Remodeling You'd Recommend.
Free Estimate
200+
Projects
15+
Years
5★
Rated
Services
One crew. Every part of your home.
Kitchens
Bathrooms
Additions
Decks

"Communication was constant and the craftsmanship is incredible."

Sarah M, Hockessin
Let's start with a free estimate.
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Zavala & Sons

Local in Wilmington, DE

Additions in Wilmington, DE

Add the space your family deserves. Second stories, in-law suites, sunrooms and full-scale additions built to blend seamlessly with your existing home. A father-and-sons crew with decades of building experience, serving Wilmington homeowners and the surrounding region.

  • Local to Wilmington & familiar with DE codes
  • Free written, itemized estimates
  • Licensed, insured & W-2 crew
  • Workmanship warranty in writing
Call (302) 781-2834 See Recent Work

Free Additions Estimate in Wilmington

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No obligation. Licensed & insured. We respond within 1 business day.

Additions in Wilmington

What additions projects look like in Wilmington

The Wilmington homes we work in are mostly 1900s–1960s mix, typically brick rowhomes, colonials, and Victorians. We've completed projects across Trolley Square, the Highlands, Westover Hills, and Brandywine Hundred.

Wilmington's older homes often surface lead paint, knob-and-tube wiring, or galvanized plumbing, we're EPA Lead-Safe certified and inspect for these before quoting.

Second-story additions on Wilmington's narrower lots in the Highlands and Trolley Square need careful sightline and shadow planning, we draw it before we quote it.

Recent in Wilmington

Additions project examples we've delivered in the area

$75K–$100K

kitchen + main floor remodel

a 1928 Highlands colonial

$35K–$55K

primary bathroom expansion

a Trolley Square rowhouse

$55K–$80K

sunroom addition with composite deck

a Westover Hills colonial

Project examples reflect typical scopes and budget ranges for the area. Final estimates always written, itemized, and free.

What we build in Wilmington

Additions services for Wilmington, DE homeowners

Whether you're refreshing a single room or planning a full additions project in Wilmington, our family-run crew handles every step, design, permits, build, finish, and final walkthrough, without subbing the work out to a stranger.

  • Second-story additions
  • In-law suites & ADUs
  • Sunrooms & bump-outs
  • Garage conversions
  • Permit & engineering coordination
  • Roof tie-ins & HVAC extension

Typical additions pricing in Wilmington

Tier
Bump-Out or Sunroom
$40,000–$100,000
Tier
Single-Story Addition
$100,000–$250,000
Tier
Second-Story or Whole-Home Addition
$250,000+

Our process in Wilmington

  1. 01

    Free Estimate

    We meet at your home, listen to your vision, and provide a clear written quote.

  2. 02

    Design & Plan

    We finalize materials, scope, timeline, and pull all required permits.

  3. 03

    Build

    Our crew shows up on time, cleans up daily, and keeps you updated weekly.

  4. 04

    Walkthrough

    Final inspection together, punch list completed, written workmanship warranty.

Additions FAQs from Wilmington homeowners

How much does a home addition cost in Wilmington, DE?

Home additions in Wilmington typically run $40,000 for a small bump-out to $250,000+ for a second-story or in-law suite. Cost depends on foundation work, roof tie-ins, HVAC extensions, and finish level. Every estimate is written and itemized.

How long does an addition take?

Most additions take 4–8 months from signed contract to final walkthrough. Design and engineering 4–6 weeks, permits 4–8 weeks, foundation 2–3 weeks, framing through finishes 3–5 months.

Do I need a permit and engineering for an addition?

Yes, additions require a building permit, structural engineering, and county or municipal inspections. Zavala & Sons coordinates the architect, engineer, and permit office for you so you don't chase paperwork.

Are you licensed and insured?

Yes. Zavala & Sons holds a Delaware business license, full general liability insurance, and workers compensation coverage. We provide a current Certificate of Insurance on request.

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