Residential Home Additions · Allen, TX

Home Additions in Allen, TX

Home Additions & Room Extensions for Allen homeowners — quality work, honest pricing and a workmanship warranty.

T.A.P. Contracting Services designs and builds home additions for homeowners across Allen, TX. Allen's family homes in Twin Creeks and Star Creek are frequently expanded with extra bedrooms, in-law suites or larger living areas as households grow. Staying in Allen's strong school zones makes adding on an easy decision for many families.

We design these additions to match the existing home and work within Allen's denser lots and HOA rules, tying new foundation, framing and roofing seamlessly into the original structure.

What's included

Room additions and bump-outs
Second-story additions
In-law and guest suites
Sunrooms and enclosed patios
Foundation, framing, roofing and finishes
Matching siding, brick and rooflines
Design, engineering and permitting

Allen neighborhoods we serve

We serve homes throughout Allen and ZIP codes including 75002 and 75013, starting with a free estimate. See our home additions & room extensions cost guide, or explore all DFW home additions & room extensions service areas.

Why Allen homeowners choose T.A.P.

For 25+ years, North Texas homeowners have trusted T.A.P. with major projects. In Allen you get a true design-build partner — engineering, permitting and every trade under one accountable contractor — plus careful matching to your existing home and a workmanship warranty.

FAQ

Home Additions in Allen — frequently asked questions

Can you add a bedroom or in-law suite to my Allen home?

Yes. Extra bedrooms and in-law/guest suites are among the most common Allen additions, designed to match your existing home.

Can you build an addition on a smaller Allen lot?

Often, yes. We work within Allen's lot setbacks and HOA rules and can design up (second story) or out where the lot allows.

How much does a home addition cost in Allen?

In Allen, additions typically run about $150–$350+ per square foot, so a room addition often lands between $40,000 and $120,000 depending on size and finishes. See our DFW home addition cost guide.

Do you handle permits and engineering for Allen additions?

Yes. We manage structural engineering, permitting with the City of Allen and inspections as part of the project, so the addition is safe, legal and built to code.

Can you match my existing home's brick and rooflines?

Yes. Matching brick, siding, windows and rooflines so the addition looks original — not bolted on — is a core part of how we design and build Allen additions.

Planning the new space? If your addition includes a kitchen or bath, our guide on planning a kitchen remodel helps you get the details right.

Home Additions for your Allen home

Get a free, no-obligation estimate — usually within one business day. Serving Allen and the Dallas–Fort Worth metroplex for over 25 years.

Get a Free Estimate (940) 222-3033