Renovation Backed by Performance Guarantees

EPC and ESCO delivery models aligned with real energy savings and predictable financial outcomes.

Engineering‑Driven Assessment for Informed Investment

Technical, energy, and financial evaluations that turn renovation decisions into measurable returns.

Transforming Buildings Through Energy‑Focused Renovation

Optimized design and execution that reduce energy demand and elevate long‑term asset performance.

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Engineering & Techno‑Economic Assessment

We assess buildings beyond form and function. By combining energy analysis, technical evaluation, and financial modeling, we define renovation strategies based on measurable performance and return on investment.

Energy‑Oriented Retrofit & Renovation

We design and implement renovation solutions that reduce energy consumption, optimize building systems, and enhance long‑term performance of existing buildings.

Performance‑Based Project Delivery (EPC / ESCO)

For selected projects, we deliver renovation and energy efficiency solutions under EPC and ESCO models, aligning technical performance with financial outcomes.

History of BISTOON Tosee Iranian Group

Founded in 2015 in Tehran, BISTOON Tosee Iranian Group was established with a clear
engineering vision: to transform building renovation from a purely aesthetic or
construction-driven process into a measurable, performance-based investment.

From its early years, BISTOON focused on understanding buildings as integrated
technical, energy, and financial systems. This approach led the group to specialize
in engineering-oriented renovation, energy efficiency, and data-driven decision
making—where design choices are justified by performance, cost efficiency, and
long-term value creation.

BISTOON’s methodology is rooted in precise technical analysis, energy modeling,
and techno-economic evaluation. By combining engineering expertise with practical
construction experience, the group develops renovation strategies that reduce
energy consumption, optimize capital expenditure, and deliver predictable returns
on investment.

Today, BISTOON operates as an engineering and construction group specializing in
energy-oriented renovation, retrofit, and performance-based project delivery.
Supported by multidisciplinary engineering teams, the group provides consulting,
design, and execution services aligned with EPC and ESCO frameworks—helping building
owners make informed, reliable, and sustainable renovation decisions.

BISTOON — Detail Defines Authenticity

At BISTOON, we deliver performance‑driven renovation for residential, commercial, and office buildings—rooted in engineering expertise, precise execution, and intelligent energy and capital management.

From assessment and design to delivery, every project is guided by measurable performance, optimized economics, and reliable outcomes—transforming existing buildings into efficient, high‑value assets with lasting investment returns.