NuSource

Back office co-sourcing, now AI agent powered.

NuSource is NTrust’s real estate back office co-sourcing service, an embedded alternative to traditional back office outsourcing, covering lease abstraction, lease administration, accounting, and asset management support. AI-enabled delivery, run by people: we embed alongside your team, not in place of it. You keep control, visibility, and institutional knowledge. We bring scale, AI agents, and two decades of real estate operations.

40%

Efficiency Gain

45+

Finops Services

98%

Client Retention

Why NuSource

Co-sourcing is a different operating model — embedded, not handed off.

Unlike traditional back office outsourcing, co-sourcing means we work alongside your team, accountable for outcomes, flexible to accommodate change, scaling when you need it, innovating for efficiency.

Traditional Outsourcing

Hand off and walk away.

Black-box teams in unnamed locations
SLA-driven; no context on your business
You lose institutional knowledge over time
Rigid service catalogues, no flex
Generic technology, bolt-on AI at best

NuSource Co-Sourcing

Embedded. Accountable. Flexible.

Named teams, transparent locations
Outcome-driven; your business context stays
Your team keeps the knowledge, we add capacity
AI agents for abstraction, validation, and reconciliation
Proprietary platforms (REmaap, NEx4) built in

Services

The real estate back office. 1,350+ practitioners. One partner.

Each service function can be delivered on its own — or a cohesive set of functions can be delivered together. Many clients start with one and add others as trust compounds. No forced bundles, no minimum spend.

Lease Abstraction

REmaap AI lease abstraction, customized to your portfolio.

Built on REmaap AI, then customized to your specific abstraction template, custom reports, custom SOPs and workflows, with full ERP integration and human validation by NTrust specialists on every output.

REmaap AI Human Validation Custom Template ERP Integratedd

Explore Service →

Lease Administration

End-to-end lease administration services.

Rent processing, CAM reconciliation, critical date tracking, landlord and tenant communications. Your team keeps the relationships — we handle the operations.

Rent Processing CAM Recons Critical Dates Tenant Admin

Explore Service →

Accounting

Corporate, Fund, Property and Development + FinOps AI.

Full-cycle accounting delivered with AI agents handling standard, repetitive work and NTrust controllers reviewing every account. Audit controls, SOP/workflow driven, ERP integrated, high efficiency.

FinOps AI Agents Month-End Close Variance Analysis Subledger Processing

Explore Service →

Asset Management Support

Transaction and portfolio support.

Rent rolls, OpEx, lease abstracts, financial models and reconciliation analysis for acquisitions and dispositions. Budgeting, reforecasting and financial modeling support across the portfolio, with REmaap AI connectors synchronizing daily model/valuation with ERP and lease updates.

Acquisitions & Dispositions Budgeting & Reforecasting Financial Modeling REmaap AI Connectors

Explore Service →

The Economics

Why real estate firms are shifting from outsourcing.

Co-sourcing trades the rigidity of a fixed vendor SLA for an embedded operating model — the same scale economics, but with your team and ours running on one shared platform, accountable for the same outcomes.

40%

Faster delivery

Compared to traditional outsourcing across lease abstraction and accounting engagements.

98%

Retention rate

Across our client portfolio — one of the highest in the industry, driven by consistent delivery.

2M+

Leases processed

Cumulative volume across global markets. Institutional-grade operational scale.

Years of Real Estate focus

Deep specialization in a single industry — delivering unmatched domain expertise.

Delivery Model

CLIENT

Your team, extended globally.

NuSource operates a hub-and-spoke delivery model.

1

Designated onshore lead

A primary onshore designated leader for your account, with a dedicated team behind them.
2

Shared operating platform

REmaap is the common platform across NuSource and your business — we run alongside your ERP and point solutions, keeping workflow, SOPs and accuracy standards in place.
3

Flex up, flex down

Scale capacity up for transactions or close, down during quiet months. No long-term volume commitments.
4

SOC 1 & 2, ISO, GDPR with active BCDR

Enterprise-grade controls supporting some of the world’s most regulated real estate operations.

Proof

Scale that proves the model works.

Institutional investors, REITs, owners, and operators rely on NuSource for their ongoing operations.

Clients

400+

Active institutional relationships across REITs, fund managers, and global operators.

Volume

2M+

Leases processed across platforms — one of the largest Real Estate operational datasets globally.

Reach

Countries supported with multi-GAAP capability and localized compliance expertise.

Trusted by leading real estate firms

Technology Inside

Powered by our purpose-built, open real estate platforms.

NuSource isn’t labour arbitrage. Every service is delivered on NTrust’s purpose-built platforms — built with open APIs and interoperable with the ERPs and point solutions you already run.

REmaap

The operating platform. 80 tools across 11 workflow stages — the backbone for every NuSource engagement.

Explore REmaap →

REAP+

Lease management and accounting SaaS. Used by our F&A team and available standalone to clients.

Explore REAP+ →

Questions

Frequently asked.

What is back office co-sourcing in real estate?

Back office co-sourcing is an operating model in which a specialist partner embeds alongside an in-house real estate team to run back office functions: lease abstraction, lease administration, property, fund and corporate accounting, and asset management support, on a shared platform with shared accountability. Unlike outsourcing, the work, context, and institutional knowledge stay with the client; the partner adds scale, AI agents, and specialist review.

What's the difference between co-sourcing and outsourcing?

Outsourcing typically means handing a back office function off to an external team who works independently — black-box delivery, SLA-driven, limited context. Co-sourcing means we embed alongside your team as an extension of it. A primary onshore designated leader, a shared operating platform, outcome accountability, and flex capacity. Your institutional knowledge stays with you. Our scale, AI agents, and specialist review get added to it.

Can we start with one service and add others later?

Yes. Many clients begin with lease abstraction, CAM reconciliations, bank reconciliations or due diligence support on a single acquisition, then expand into full property accounting, lease administration or asset management support as trust compounds. There are no forced bundles, no minimum spend across services.

Where are your delivery locations?

NuSource operates from five locations: Los Angeles, London, Chennai, Mumbai, and Manila. Onshore leads are based in your region; specialist capacity scales from our offshore locations on one integrated platform.

How does data security work?

SOC 1 and 2 certified processes, ISO certified, GDPR-compliant data handling, with active BCDR plans, segregated client environments, role-based access control, and encrypted data in transit and at rest. We support some of the world’s most highly regulated real estate operations.

How quickly can you onboard?

We can begin ramping a team within 2 weeks to pilot, then build out SOPs and reach full onboarding within 4 to 6 weeks of operating the designated functions. Onboarding covers SOP documentation, security setup, and ramp of the designated team. Smaller engagements can move faster; large multi-service rollouts may take 8–10 weeks.

Can you flex capacity up and down?

Yes. Capacity flexes month-to-month with no long-term volume commitments. Spike for transactions, year-end close, or audit periods. Scale down during quiet months. The hub-and-spoke model is designed exactly for this kind of variable demand.

How does NuSource compare to other real estate outsourcing providers?

NuSource is built specifically for real estate and runs every engagement on NTrust's own purpose-built platforms, REmaap and REAP+. Where traditional outsourcing hands a function off to a separate team, NuSource is co-sourcing: embedded teams, a shared operating platform, shared accountability, and AI agents with human validation by NTrust specialists on every output.

Who are your clients?

Institutional investors, REITs, owners, private equity firms, and large operators across commercial, residential, hospitality, and mixed-use real estate. Client roster spans North America, EMEA, APAC, and Latin America.

Let's achieve even more — together.

Book a 30-minute consultation. We’ll map which services fit and how quickly we can be in flight.

Book a Consultation

Back office co-sourcing, now AI agent powered.

Co-sourcing is a different operating model — embedded, not handed off.

The real estate back office. 1,350+ practitioners. One partner.

REmaap AI lease abstraction, customized to your portfolio.

End-to-end lease administration services.

Corporate, Fund, Property and Development + FinOps AI.

Transaction and portfolio support.