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Home Additions · San Antonio, TX/Updated June 13, 2026

The Best Home Addition Contractors in San Antonio, TX

Transform your home with the best contractors in San Antonio. Our expert picks are based on real reviews and performance.

Editorially independent7 companies evaluated
cover story
★ Editor's ChoiceSouth Texas Contractors & Roofing
95Score
Latest update · June 13, 2026: Initial ranking published. 7 San Antonio-metro home additions businesses evaluated, top 7 ranked by Vetted Score.

Home additions can significantly enhance your living space and increase property value, making it a vital service for homeowners in San Antonio. With the right contractor, you can achieve the perfect blend of functionality and aesthetics in your home.

We evaluated local home addition contractors based on customer ratings, review counts, and overall service quality. Our list is updated monthly, ensuring you have the most current information to make an informed choice.

7home addition contractors evaluated in San Antonio
4.76average rating across the field
426customer reviews analyzed

Cityvetted analysis of public Google review data, updated June 13, 2026.

How much does home additions cost in San Antonio? See the price breakdown →

Our top picks

At a glance · three categories
Editor's Choice
95Score

South Texas Contractors & Roofing

★★★★★4.9(95 reviews)

With a stellar rating of 4.9 from 95 reviews, South Texas Contractors & Roofing stands out for its exceptional customer service and quality workmanship.

Read full review
Best Value
94Score

GMG Construction of South Texas

★★★★★4.8(101 reviews)

GMG Construction of South Texas boasts a solid 4.8 rating from 101 reviews, making it a reliable choice for home additions.

Read full review
Most Reviewed
93Score

ALO General Contractor

★★★★★4.7(85 reviews)

ALO General Contractor has earned a 4.7 rating from 85 reviews, showcasing a strong reputation in the San Antonio area.

Read full review

All 7, compared

Data as of June 13, 2026
BusinessVetted ScoreGoogle ratingReviewsBest for
1
95Score
4.9★★★★★
95Residential additions and renovations
2
94Score
4.8★★★★★
101Affordable home additions
3
93Score
4.7★★★★★
85Kitchen and bathroom additions
4
90Score
4.9★★★★★
36Unique and custom home additions
5
88Score
4.7★★★★★
34Blending new additions with existing structures
6
85Score
4.8★★★★★
23Modern and creative home additions
7
82Score
4.5★★★★★
52Standard home additions and renovations
Methodology

How we evaluated all 7 home addition contractors.

We assessed each contractor's reputation through consumer reviews and ratings, looking closely at their project outcomes and customer satisfaction. No business pays for placement in our rankings, ensuring a fair and unbiased evaluation.

Our analysis is refreshed every month to reflect the latest customer feedback and service performance. This way, you can trust that the information is relevant and reliable.

The Vetted Score: six weighted factors

Customer sentiment25%
Rating quality20%
Review volume & velocity20%
Website trust signals15%
Service breadth10%
Business longevity10%

Sentiment is measured by AI analysis of review text, recency-weighted, with verified-pattern checks to discount suspicious review bursts.

Full reviews

The rankings · in order
1
★ Editor's Choice

South Texas Contractors & Roofing

★★★★★4.9(95 reviews)
95Score

With a stellar rating of 4.9 from 95 reviews, South Texas Contractors & Roofing stands out for its exceptional customer service and quality workmanship. Clients frequently praise their attention to detail and timely completion of projects. They are best known for residential additions and renovations. However, their higher pricing might not suit every budget.

Pros

  • High customer satisfaction
  • Timely project completion
  • Skilled craftsmanship

Cons

  • Higher pricing
  • Limited availability during peak seasons
Best forResidential additions and renovations
Service areaSan Antonio and surrounding areas
Typical pricing$20,000 to $50,000
2
Best Value

GMG Construction of South Texas

★★★★★4.8(101 reviews)
94Score

GMG Construction of South Texas boasts a solid 4.8 rating from 101 reviews, making it a reliable choice for home additions. Reviewers highlight their competitive pricing and strong communication throughout the project. They excel in delivering quality work without breaking the bank. However, some customers noted delays during busy periods, so early booking is advisable.

Pros

  • Competitive pricing
  • Strong communication
  • Reliable service

Cons

  • Potential delays during peak times
  • Limited high-end options
Best forAffordable home additions
Service areaSan Antonio and nearby regions
Typical pricing$20,000 to $80,000
3
Most Reviewed

ALO General Contractor

★★★★★4.7(85 reviews)
93Score

ALO General Contractor has earned a 4.7 rating from 85 reviews, showcasing a strong reputation in the San Antonio area. Customers appreciate their professionalism and transparency during the project. They are particularly praised for kitchen and bathroom additions. A few reviewers mentioned inconsistent follow-up, highlighting a need for better communication at times.

Pros

  • Professionalism
  • Transparent pricing
  • Specialized in kitchens and bathrooms

Cons

  • Inconsistent follow-up
  • Limited scope for larger projects
Best forKitchen and bathroom additions
Service areaSan Antonio and surrounding areas
Typical pricing$30,000 to $70,000
4

M Construction & Remodeling Group, LLC

★★★★★4.9(36 reviews)
90Score

M Construction & Remodeling Group, LLC holds a 4.9 rating from 36 reviews, indicating a promising but unproven track record in the home addition sector. Clients commend their creative designs and personalized approach. They are best for unique projects that require custom solutions. However, the limited number of reviews raises questions about their experience on larger projects.

Pros

  • Creative designs
  • Personalized service
  • Attention to detail

Cons

  • Limited reviews
  • Less experience with large projects
Best forUnique and custom home additions
Service areaSan Antonio and nearby areas
Typical pricing$25,000 to $60,000
5

Walker Homes and Remodeling

★★★★★4.7(34 reviews)
88Score

Walker Homes and Remodeling has a solid 4.7 rating from 34 reviews, reflecting a commitment to quality home improvements. Customers appreciate their innovative designs and thorough project management. They are well-regarded for additions that blend seamlessly with existing structures. However, with fewer reviews, their reliability on larger projects remains to be seen.

Pros

  • Innovative designs
  • Thorough project management
  • Seamless integration

Cons

  • Fewer reviews
  • Limited experience with extensive additions
Best forBlending new additions with existing structures
Service areaSan Antonio and surrounding areas
Typical pricing$20,000 to $55,000
6

Rhino Design Build, LLC

★★★★★4.8(23 reviews)
85Score

Rhino Design Build, LLC has a 4.8 rating from 23 reviews, indicating a promising but unproven reputation in the home addition market. Reviewers praise their innovative designs and flexibility in project management. They are best for modern and creative additions. However, their limited review base raises questions about their consistency and reliability.

Pros

  • Innovative designs
  • Flexible project management
  • Creative solutions

Cons

  • Limited review base
  • Unproven consistency
Best forModern and creative home additions
Service areaSan Antonio and surrounding areas
Typical pricing$30,000 to $70,000
7

KM BUILDERS

★★★★★4.5(52 reviews)
82Score

KM BUILDERS holds a 4.5 rating from 52 reviews, showcasing a dependable option for home additions. Customers appreciate their straightforward approach and quality workmanship. They excel in standard home additions and renovations. However, some reviewers reported delays in project timelines, suggesting a need for better scheduling practices. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is standard home additions and renovations. It serves San Antonio and surrounding areas, with $25,000 to $60,000 pricing, and the honest trade-offs are reported delays and less experience with complex projects.

Pros

  • Dependable service
  • Quality workmanship
  • Straightforward approach

Cons

  • Reported delays
  • Less experience with complex projects
Best forStandard home additions and renovations
Service areaSan Antonio and surrounding areas
Typical pricing$25,000 to $60,000
Before you book

How to choose a home addition contractor in San Antonio

Selecting the right contractor for your home addition project requires careful consideration. Here are some key factors to keep in mind when making your choice.

Experience and Expertise

Look for contractors with a proven track record in home additions, showcasing their ability to handle similar projects.

Customer Reviews

Check online reviews and ratings to gauge customer satisfaction and the quality of work delivered.

Licensing and Insurance

Ensure the contractor is properly licensed and insured to protect yourself from potential liabilities.

Transparent Pricing

Request detailed estimates and understand the pricing structure to avoid unexpected costs later.

What it costs

What home additions cost in San Antonio

The cost of home additions in San Antonio can vary widely based on the project's scope, materials, and contractor expertise. Here's a general idea of what to expect.

Small Additions (e.g., extra room)$20,000 to $50,000, depending on size and materials.
Medium Additions (e.g., bathroom or kitchen expansion)$50,000 to $100,000, influenced by design and finishes.
Large Additions (e.g., second story or major expansion)$100,000 to $200,000 or more, based on complexity.
Custom ProjectsPrices can exceed $200,000 for high-end, custom-designed additions.

Frequently asked questions

How much does home addition cost in San Antonio?

Home addition costs can range from $20,000 to over $200,000, depending on the size and complexity of the project.

What should I look for in a home addition contractor?

Look for experience, customer reviews, proper licensing, and transparent pricing to ensure a successful project.

How often is this ranking updated?

We re-run the full analysis monthly with fresh review data. Last updated June 13, 2026.

Our verdict

For most San Antonio homes: South Texas Contractors & Roofing

For homeowners in San Antonio looking for reliable home addition contractors, South Texas Contractors & Roofing is the top choice, combining quality and customer satisfaction. Close contenders include GMG Construction of South Texas for its value and ALO General Contractor for its specialized services in kitchens and bathrooms.