Just make sure the lender will allow for x amount of gift funds depending on the loan program you are going with. 

Conceptual design and fixed pricing for the construction.2.

I only contributed financially and gave some design ideas.

The efforts that projects of this nature take are massive but the results are more than worth it.https://www.dispatch.com/story/news/2023/11/27/columbus-home-for-human-trafficking-survivors-harriets-hope-to-open/71625032007/One-of-a-kind home for human trafficking survivors to open next month in ColumbusDanae KingColumbus DispatchOn Friday, survivors of human trafficking will walk into their brand new home: a place where each fixture and detail was chosen especially for them by fellow survivors.The home is Harriet’s Hope — named for abolitionist Harriet Tubman — a 52-unit housing community that can host multiple families and was designed specifically for human trafficking survivors.The one-of-a-kind community comes out of a public-private partnership that brought together Ohio Attorney General Dave Yost; Columbus Metropolitan Housing Authority (CMHA); CVS Health and OhioRISE, the CVS/Aetna-owned Medicaid program; Beacon 360 Management and many others.The Dec. 1 opening of Harriet's Hope, a community on Columbus' West Side whose exact location isn't being shared to protect survivor's safety, was announced at the Ohio Statehouse this morning.A call to actionThe project started a few years ago as a vision of Celia Kendall, the CEO of Beacon 360 Management, a nonprofit real estate developer and management firm based in Columbus with 28 communities across Ohio.Kendall got the idea for Harriet's Hope after being unsettled by what she saw doing street outreach with women being trafficked six years ago."

Is it stipulated in the tenant's lease agreement that both of you are designated as landlords, or is only one of you identified as the landlord?

Selena Walsh you may want to verify they won't be sourcing those funds even though they are a gift.

If yes, and if you do not have much experience yourself, I would engage a local civil engineer to guide you through the initial planning phases even before you get to design & construction. 

I have done a lot of design and remodeling jobs in that area.

Have you ever thought of using a creative financing method called "Gift of Equity"?

https://www.walmart.com/ip/Bodum-Outdoor-French-Press-Gift-S...It is a Bodum Outdoor French Press kit.