# Engineered Tax Services (ETS)

> Engineered Tax Services (ETS) is the premier national specialty tax firm providing professional engineering-based services to optimize federal and state tax incentives. We specialize in cost segregation, R&D tax credits, and energy tax certifications (179D / 45L) for CPA firms, building owners, architects, and engineers.

## Core Tax Services
Engineering-based specialty tax incentives and optimizations.

- [/cost-segregation/](https://engineeredtaxservices.com/cost-segregation/): Accelerate depreciation schedules and optimize cash flow on commercial real estate investments.
- [/research-development-tax-credits/](https://engineeredtaxservices.com/research-development-tax-credits/): Identify qualified research expenses and tax credits across technical and innovative industries.
- [/179d-energy-tax-deduction/](https://engineeredtaxservices.com/179d-energy-tax-deduction/): Energy-efficient commercial buildings deductions for eligible building designs and systems.
- [/45l-energy-efficient-home-credit/](https://engineeredtaxservices.com/45l-energy-efficient-home-credit/): Tax credits for developers of energy-efficient residential and multi-family properties.

## Cost Segregation by Asset Type
Tailored cost segregation solutions for specialized commercial properties.

- [/industries/hospitality/](https://engineeredtaxservices.com/industries/hospitality/): Maximizing tax deductions for hotels, resorts, and restaurant portfolios.
- [/industries/multi-family/](https://engineeredtaxservices.com/industries/multi-family/): Depreciation acceleration strategies for apartment complexes and residential rental structures.
- [/industries/manufacturing/](https://engineeredtaxservices.com/industries/manufacturing/): Specialized cost segregation engineered for manufacturing plants and heavy industrial facilities.

## Tax Law & Technical Q&A Library
High-signal educational documentation regarding complex tax compliance, regulations, and calculations.

- [/ets_resources/form-3115/](https://engineeredtaxservices.com/ets_resources/form-3115/): Step-by-step guide to filing an Application for Change in Accounting Method for catch-up depreciation.
- [/ets_resources/bonus-depreciation/](https://engineeredtaxservices.com/ets_resources/bonus-depreciation/): Comprehensive overview of the federal bonus depreciation phase-out schedule and implications.
- [/ets_resources/real-estate-professional-status/](https://engineeredtaxservices.com/ets_resources/real-estate-professional-status/): Requirements, rules, and tax advantages for achieving REP status.

## Representative Case Studies
High-value performance metrics and financial outcomes achieved across diverse sectors.

- [/case-studies/105m-flagship-portfolio/](https://engineeredtaxservices.com/case-studies/105m-flagship-portfolio/): Cost segregation study achieving over $12M in tax savings on a premier real estate portfolio.
- [/case-studies/](https://engineeredtaxservices.com/case-studies/): Curated index of available engineering, R&D, and energy specialty tax case studies.

## Company & Leadership
Corporate profile, leadership team, and physical regional office locations.

- [/about-us/](https://engineeredtaxservices.com/about-us/): Mission, engineering-based methodology, and corporate history.
- [/locations/](https://engineeredtaxservices.com/locations/): Directory of national and regional offices across the United States.

## Optional
Long-tail historical archives, full reverse-chronological content logs, and legacy resources.

- [/blog/](https://engineeredtaxservices.com/blog/): Complete chronological archive of general corporate blog posts and social media teasers.
- [/case-studies-archive/](https://engineeredtaxservices.com/case-studies-archive/): Extended archive containing the full list of historically executed minor case studies.
- [/brochures/](https://engineeredtaxservices.com/brochures/): Downloadable marketing brochures and legacy informational PDF files.