I am starting a development, architecture, and construction business here in this city.  

The architectural details and finishes can significantly impact cost.

It will depend on the city or counties architectural requirements for gingerbread exterior finish to approve site plans.

I'll be sure to reach out to my attorney prior to submitting a LOI - Coming up with a basis for a strong property valuation wouldn't be too difficult, but I'd like to get the property under contract prior to investing any amount of time and money into a nice presentation with initial architectural renderings, market info, and proper financial analysis (construction and operating pro-formas).I'm looking at this as a "chicken of the egg" situation.

Hi Conor,My name is Ryan, I work for an Architecture firm in the LA area and am interested in buying a lot/land in the Topanga area as well.

On the other hand, well-done desert architecture, landscaping, and vibrant colors are awesome, and frankly a very easy way to distinguish yourself from the million or so "meh" properties around the valley.  

It's on the Thornton Park historic registry which scares me even more as there are historic architectural requirements that have to be adhered to during renovations.I think this property would go for $400,000 ARV if renovated properly.

To do it legally, you will likely need to pull permits including a minor/major alteration permit, and you may need separate permits for electrical, heating, and plumbing, plus you may need draftsman plans or architectural plans.  

If it is very extensive, you will need to prove to the city what your repairing is what the house needs, but your full blown architectural company will take care of this.

Maybe a little late now but often the architectural style and building/construction methods date a property.